COVID-19-associated stroke: Difference between revisions

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{{COVID-19}}
{{SI}}


{{CMG}}; {{AE}} {{Parul}}, [[User:MoisesRomo|Moises Romo M.D.]]
{{CMG}}; {{AE}} {{Parul}}, [[User:MoisesRomo|Moises Romo M.D.]] {{Fs}}


{{SK}} [[COVID-19]], [[SARS-CoV-2]], [[stroke]], [[CT scan]], [[cerebrovascular disease]], [[Tissue plasminogen activator|TPA]], [[alteplase]]  
{{SK}} [[COVID-19]], [[SARS-CoV-2]], [[stroke]], [[CT scan]], [[cerebrovascular disease]], [[Tissue plasminogen activator|TPA]], [[alteplase]]


<br />
==Overview==
==Overview==
[[Cerebral hemorrhage]] or [[cerebral ischemia]] disrupts cerebral perfusion and can lead to an acute [[Neurological|neurologic]] condition, called [[stroke]]. [[Cerebrovascular]] complications have been reported in severe Coronavirus Disease 2019 ([[COVID-19]]). However, neurological complications are not very common in rapidly spreading [[COVID-19]] which is caused by a novel coronavirus, severe acute respiratory syndrome coronavirus-2 ([[SARS-CoV-2]]). The presenting complaints in majority of [[stroke]] [[patients]] reported in different studies were respiratory complaints ([[shortness of breath]], [[cough]]) and non-specific constitutional [[Symptom|symptoms]] such as [[fever]], [[malaise]], etc., and [[stroke]] developed later in the course of the [[disease]]. This is thought to be due to [[COVID-19-associated coagulopathy]]. However, there are few case reports and studies that have mentioned specific neurological presenting complaints such as [[altered mental status]], [[limb]] [[weakness]], and [[aphasia]]. Various non-pulmonary features are being reported as the [[COVID-19]] understanding is unfolding with the spike of cases and continuously rising number of cases globally.  
[[Cerebral hemorrhage]] or [[cerebral ischemia]] disrupts cerebral perfusion and can lead to an acute [[Neurological|neurologic]] condition, called [[stroke]]. [[Cerebrovascular]] complications have been reported in severe Coronavirus Disease 2019 ([[COVID-19]]). However, neurological complications are not very common in rapidly spreading [[COVID-19]] which is caused by a novel coronavirus, severe acute respiratory syndrome coronavirus-2 ([[SARS-CoV-2]]). The presenting complaints in majority of [[stroke]] [[patients]] reported in different studies were respiratory complaints ([[shortness of breath]], [[cough]]) and non-specific constitutional [[Symptom|symptoms]] such as [[fever]], [[malaise]], etc., and [[stroke]] developed later in the course of the [[disease]]. This is thought to be due to [[COVID-19-associated coagulopathy]]. However, there are few case reports and studies that have mentioned specific neurological presenting complaints such as [[altered mental status]], [[limb]] [[weakness]], and [[aphasia]]. Various non-pulmonary features are being reported as the [[COVID-19]] understanding is unfolding with the spike of cases and continuously rising number of cases globally.
 
To view general COVID-19 section, click [[COVID-19|here]].
==Historical Perspective==
==Historical Perspective==


*Stroke was first recognized by Hippocrates, in the fourth century BC, almost 2,400 years ago, and it was reffered to as [[Apoplexy]], a Greek medical literature term, which means 'struk down by violence'. Later, renaissance anatomists, in mid-16th century A.D., explained the pathophysiology of stroke, differentiating the causes as bleeding or blockage of A cerebral artery.<ref name="Theofanidis2015">{{cite journal|last1=Theofanidis|first1=Dimitrios|title=From Apoplexy to Brain Attack, a Historical Perspective on Stroke to Date|journal=Journal of Nursing & Care|volume=04|issue=01|year=2015|issn=21671168|doi=10.4172/2167-1168.1000e121}}</ref>
*Stroke was first recognized by Hippocrates, in the fourth century BC, almost 2,400 years ago, and it was reffered to as [[Apoplexy]], a Greek medical literature term, which means 'struk down by violence'. Later, renaissance anatomists, in mid-16th century A.D., explained the pathophysiology of stroke, differentiating the causes as bleeding or blockage of A cerebral artery.<ref name="Theofanidis20152">{{cite journal|last1=Theofanidis|first1=Dimitrios|title=From Apoplexy to Brain Attack, a Historical Perspective on Stroke to Date|journal=Journal of Nursing & Care|volume=04|issue=01|year=2015|issn=21671168|doi=10.4172/2167-1168.1000e121}}</ref>
*Mao et al., in his study, first reported [[Neurological disorders|neurological symptoms]] in [[COVID-19]] patients hospitalized in Wuhan, China from January 16, 2020, to February 19, 2020. [[Neurological]] symptoms were reported in 78 patients out of 214 [[COVID-19]] positive hospitalized patients with [[COVID-19]] in Wuhan, China. The stroke patients reported specifically were 14<ref name="MaoJin20202">{{cite journal|last1=Mao|first1=Ling|last2=Jin|first2=Huijuan|last3=Wang|first3=Mengdie|last4=Hu|first4=Yu|last5=Chen|first5=Shengcai|last6=He|first6=Quanwei|last7=Chang|first7=Jiang|last8=Hong|first8=Candong|last9=Zhou|first9=Yifan|last10=Wang|first10=David|last11=Miao|first11=Xiaoping|last12=Li|first12=Yanan|last13=Hu|first13=Bo|title=Neurologic Manifestations of Hospitalized Patients With Coronavirus Disease 2019 in Wuhan, China|journal=JAMA Neurology|volume=77|issue=6|year=2020|pages=683|issn=2168-6149|doi=10.1001/jamaneurol.2020.1127}}</ref>. In this study, patients with [[cardiovascular]] [[risk factors]] who presented with severe systemic [[symptoms]] were at higher risk of [[stroke]].
*Yaghi et al. retrospectively examined [[stroke]] patients admitted across different locations of NYU Langone hospital in New York. In this study, the incidence of 0.9% was observed in [[laboratory]] confirmed [[COVID-19]] positive patients included in this study. [[Stroke]] diagnosis was proved by imaging, and [[cryptogenic]] [[stroke]] was seen in most of these patients. The mortality was much higher in [[stroke]] patients who were [[COVID-19]] positive.<ref name="YaghiIshida20202">{{cite journal|last1=Yaghi|first1=Shadi|last2=Ishida|first2=Koto|last3=Torres|first3=Jose|last4=Mac Grory|first4=Brian|last5=Raz|first5=Eytan|last6=Humbert|first6=Kelley|last7=Henninger|first7=Nils|last8=Trivedi|first8=Tushar|last9=Lillemoe|first9=Kaitlyn|last10=Alam|first10=Shazia|last11=Sanger|first11=Matthew|last12=Kim|first12=Sun|last13=Scher|first13=Erica|last14=Dehkharghani|first14=Seena|last15=Wachs|first15=Michael|last16=Tanweer|first16=Omar|last17=Volpicelli|first17=Frank|last18=Bosworth|first18=Brian|last19=Lord|first19=Aaron|last20=Frontera|first20=Jennifer|title=SARS-CoV-2 and Stroke in a New York Healthcare System|journal=Stroke|volume=51|issue=7|year=2020|pages=2002–2011|issn=0039-2499|doi=10.1161/STROKEAHA.120.030335}}</ref>


*Mao et al., in his study, first reported neurological symptoms in [[COVID-19]] patients hospitalized in Wuhan, China from January 16, 2020, to February 19, 2020. Neurological symptoms were reported in 78 patients out of 214 Covid-19 positive hospitalized patients with [[COVID-19]] in Wuhan, China. The stroke patients reported specifically were 14<ref name="MaoJin2020">{{cite journal|last1=Mao|first1=Ling|last2=Jin|first2=Huijuan|last3=Wang|first3=Mengdie|last4=Hu|first4=Yu|last5=Chen|first5=Shengcai|last6=He|first6=Quanwei|last7=Chang|first7=Jiang|last8=Hong|first8=Candong|last9=Zhou|first9=Yifan|last10=Wang|first10=David|last11=Miao|first11=Xiaoping|last12=Li|first12=Yanan|last13=Hu|first13=Bo|title=Neurologic Manifestations of Hospitalized Patients With Coronavirus Disease 2019 in Wuhan, China|journal=JAMA Neurology|volume=77|issue=6|year=2020|pages=683|issn=2168-6149|doi=10.1001/jamaneurol.2020.1127}}</ref>. In this study, patients with cardiovascular risk factors who presented with severe systemic symptoms were at higher risk of stroke.
To view historical perspective of COVID-19 section, click [[COVID-19 historical perspective|here]].
 
==Classification==
*Yaghi et al. retrospectively examined [[stroke]] patients admitted across different locations of NYU Langone hospital in New York. In this study, the incidence of 0.9% was observed in laboratory confirmed COVID-19 positive patients included in this study. [[Stroke]] diagnosis was proved by imaging, and [[cryptogenic]] [[stroke]] was seen in most of these patients. The mortality was much higher in stroke patients who were [[COVID-19]] positive.<ref name="YaghiIshida2020">{{cite journal|last1=Yaghi|first1=Shadi|last2=Ishida|first2=Koto|last3=Torres|first3=Jose|last4=Mac Grory|first4=Brian|last5=Raz|first5=Eytan|last6=Humbert|first6=Kelley|last7=Henninger|first7=Nils|last8=Trivedi|first8=Tushar|last9=Lillemoe|first9=Kaitlyn|last10=Alam|first10=Shazia|last11=Sanger|first11=Matthew|last12=Kim|first12=Sun|last13=Scher|first13=Erica|last14=Dehkharghani|first14=Seena|last15=Wachs|first15=Michael|last16=Tanweer|first16=Omar|last17=Volpicelli|first17=Frank|last18=Bosworth|first18=Brian|last19=Lord|first19=Aaron|last20=Frontera|first20=Jennifer|title=SARS-CoV-2 and Stroke in a New York Healthcare System|journal=Stroke|volume=51|issue=7|year=2020|pages=2002–2011|issn=0039-2499|doi=10.1161/STROKEAHA.120.030335}}</ref>
 
 
 
 
 
 
*The most common type of [[stroke]] in patients with [[COVID-19]] is [[ischemic]].<ref name="QureshiAbd-Allah2020" />
 
***
 
 
 
Stroke should be differentiated from other causes of muscle weakness and paralysis. The differentials include the following:<ref name="pmid29433111">{{cite journal |vauthors=Kira R |title=[Acute Flaccid Myelitis] |language=Japanese |journal=Brain Nerve |volume=70 |issue=2 |pages=99–112 |date=February 2018 |pmid=29433111 |doi=10.11477/mf.1416200962 |url=}}</ref><ref name="pmid29433111">{{cite journal |vauthors=Kira R |title=[Acute Flaccid Myelitis] |language=Japanese |journal=Brain Nerve |volume=70 |issue=2 |pages=99–112 |date=February 2018 |pmid=29433111 |doi=10.11477/mf.1416200962 |url=}}</ref><ref name="pmid29181601">{{cite journal |vauthors=Hopkins SE |title=Acute Flaccid Myelitis: Etiologic Challenges, Diagnostic and Management Considerations |journal=Curr Treat Options Neurol |volume=19 |issue=12 |pages=48 |date=November 2017 |pmid=29181601 |doi=10.1007/s11940-017-0480-3 |url=}}</ref><ref name="pmid27422805">{{cite journal |vauthors=Messacar K, Schreiner TL, Van Haren K, Yang M, Glaser CA, Tyler KL, Dominguez SR |title=Acute flaccid myelitis: A clinical review of US cases 2012-2015 |journal=Ann. Neurol. |volume=80 |issue=3 |pages=326–38 |date=September 2016 |pmid=27422805 |pmc=5098271 |doi=10.1002/ana.24730 |url=}}</ref><ref name="pmid29028962">{{cite journal |vauthors=Chong PF, Kira R, Mori H, Okumura A, Torisu H, Yasumoto S, Shimizu H, Fujimoto T, Hanaoka N, Kusunoki S, Takahashi T, Oishi K, Tanaka-Taya K |title=Clinical Features of Acute Flaccid Myelitis Temporally Associated With an Enterovirus D68 Outbreak: Results of a Nationwide Survey of Acute Flaccid Paralysis in Japan, August-December 2015 |journal=Clin. Infect. Dis. |volume=66 |issue=5 |pages=653–664 |date=February 2018 |pmid=29028962 |pmc=5850449 |doi=10.1093/cid/cix860 |url=}}</ref><ref name="pmid29482893">{{cite journal |vauthors=Messacar K, Asturias EJ, Hixon AM, Van Leer-Buter C, Niesters HGM, Tyler KL, Abzug MJ, Dominguez SR |title=Enterovirus D68 and acute flaccid myelitis-evaluating the evidence for causality |journal=Lancet Infect Dis |volume=18 |issue=8 |pages=e239–e247 |date=August 2018 |pmid=29482893 |doi=10.1016/S1473-3099(18)30094-X |url=}}</ref><ref name="pmid30200066">{{cite journal |vauthors=Chen IJ, Hu SC, Hung KL, Lo CW |title=Acute flaccid myelitis associated with enterovirus D68 infection: A case report |journal=Medicine (Baltimore) |volume=97 |issue=36 |pages=e11831 |date=September 2018 |pmid=30200066 |pmc=6133480 |doi=10.1097/MD.0000000000011831 |url=}}</ref><ref name="urlBotulism | Botulism | CDC">{{cite web |url=https://www.cdc.gov/botulism/index.html |title=Botulism &#124; Botulism &#124; CDC |format= |work= |accessdate=}}</ref><ref name="pmid3290234">{{cite journal |vauthors=McCroskey LM, Hatheway CL |title=Laboratory findings in four cases of adult botulism suggest colonization of the intestinal tract |journal=J. Clin. Microbiol. |volume=26 |issue=5 |pages=1052–4 |date=May 1988 |pmid=3290234 |pmc=266519 |doi= |url=}}</ref><ref name="pmid16614251">{{cite journal |vauthors=Lindström M, Korkeala H |title=Laboratory diagnostics of botulism |journal=Clin. Microbiol. Rev. |volume=19 |issue=2 |pages=298–314 |date=April 2006 |pmid=16614251 |pmc=1471988 |doi=10.1128/CMR.19.2.298-314.2006 |url=}}</ref><ref name="pmid17224901">{{cite journal |vauthors=Brook I |title=Botulism: the challenge of diagnosis and treatment |journal=Rev Neurol Dis |volume=3 |issue=4 |pages=182–9 |date=2006 |pmid=17224901 |doi= |url=}}</ref><ref name="pmid23642721">{{cite journal |vauthors=Dimachkie MM, Barohn RJ |title=Guillain-Barré syndrome and variants |journal=Neurol Clin |volume=31 |issue=2 |pages=491–510 |date=May 2013 |pmid=23642721 |pmc=3939842 |doi=10.1016/j.ncl.2013.01.005 |url=}}</ref><ref name="pmid23418763">{{cite journal |vauthors=Walling AD, Dickson G |title=Guillain-Barré syndrome |journal=Am Fam Physician |volume=87 |issue=3 |pages=191–7 |date=February 2013 |pmid=23418763 |doi= |url=}}</ref><ref name="pmid21969911">{{cite journal |vauthors=Gilhus NE |title=Lambert-eaton myasthenic syndrome; pathogenesis, diagnosis, and therapy |journal=Autoimmune Dis |volume=2011 |issue= |pages=973808 |date=2011 |pmid=21969911 |pmc=3182560 |doi=10.4061/2011/973808 |url=}}</ref><ref name="pmid14977560">{{cite journal |vauthors=Krishnan C, Kaplin AI, Deshpande DM, Pardo CA, Kerr DA |title=Transverse Myelitis: pathogenesis, diagnosis and treatment |journal=Front. Biosci. |volume=9 |issue= |pages=1483–99 |date=May 2004 |pmid=14977560 |doi= |url=}}</ref><ref name="pmid24305450">{{cite journal |vauthors=Amato AA, Greenberg SA |title=Inflammatory myopathies |journal=Continuum (Minneap Minn) |volume=19 |issue=6 Muscle Disease |pages=1615–33 |date=December 2013 |pmid=24305450 |doi=10.1212/01.CON.0000440662.26427.bd |url=}}</ref><ref name="pmid24365430">{{cite journal |vauthors=Berger JR, Dean D |title=Neurosyphilis |journal=Handb Clin Neurol |volume=121 |issue= |pages=1461–72 |date=2014 |pmid=24365430 |doi=10.1016/B978-0-7020-4088-7.00098-5 |url=}}</ref>
 
*Stroke was first recognized by Hippocrates, in the fourth century BC, almost 2,400 years ago, and it was reffered to as [[Apoplexy]], a Greek medical literature term, which means 'struk down by violence'. Later, renaissance anatomists, in mid-16th century A.D., explained the pathophysiology of stroke, differentiating the causes as bleeding or blockage of A cerebral artery.<ref name="Theofanidis2015">{{cite journal|last1=Theofanidis|first1=Dimitrios|title=From Apoplexy to Brain Attack, a Historical Perspective on Stroke to Date|journal=Journal of Nursing & Care|volume=04|issue=01|year=2015|issn=21671168|doi=10.4172/2167-1168.1000e121}}</ref>
 
*Mao et al., in his study, first reported neurological symptoms in [[COVID-19]] patients hospitalized in Wuhan, China from January 16, 2020, to February 19, 2020. Neurological symptoms were reported in 78 patients out of 214 Covid-19 positive hospitalized patients with [[COVID-19]] in Wuhan, China. The stroke patients reported specifically were 14<ref name="MaoJin2020">{{cite journal|last1=Mao|first1=Ling|last2=Jin|first2=Huijuan|last3=Wang|first3=Mengdie|last4=Hu|first4=Yu|last5=Chen|first5=Shengcai|last6=He|first6=Quanwei|last7=Chang|first7=Jiang|last8=Hong|first8=Candong|last9=Zhou|first9=Yifan|last10=Wang|first10=David|last11=Miao|first11=Xiaoping|last12=Li|first12=Yanan|last13=Hu|first13=Bo|title=Neurologic Manifestations of Hospitalized Patients With Coronavirus Disease 2019 in Wuhan, China|journal=JAMA Neurology|volume=77|issue=6|year=2020|pages=683|issn=2168-6149|doi=10.1001/jamaneurol.2020.1127}}</ref>. In this study, patients with cardiovascular risk factors who presented with severe systemic symptoms were at higher risk of stroke.
 
*Yaghi et al. retrospectively examined [[stroke]] patients admitted across different locations of NYU Langone hospital in New York. In this study, the incidence of 0.9% was observed in laboratory confirmed COVID-19 positive patients included in this study. [[Stroke]] diagnosis was proved by imaging, and [[cryptogenic]] [[stroke]] was seen in most of these patients. The mortality was much higher in stroke patients who were [[COVID-19]] positive.<ref name="YaghiIshida2020">{{cite journal|last1=Yaghi|first1=Shadi|last2=Ishida|first2=Koto|last3=Torres|first3=Jose|last4=Mac Grory|first4=Brian|last5=Raz|first5=Eytan|last6=Humbert|first6=Kelley|last7=Henninger|first7=Nils|last8=Trivedi|first8=Tushar|last9=Lillemoe|first9=Kaitlyn|last10=Alam|first10=Shazia|last11=Sanger|first11=Matthew|last12=Kim|first12=Sun|last13=Scher|first13=Erica|last14=Dehkharghani|first14=Seena|last15=Wachs|first15=Michael|last16=Tanweer|first16=Omar|last17=Volpicelli|first17=Frank|last18=Bosworth|first18=Brian|last19=Lord|first19=Aaron|last20=Frontera|first20=Jennifer|title=SARS-CoV-2 and Stroke in a New York Healthcare System|journal=Stroke|volume=51|issue=7|year=2020|pages=2002–2011|issn=0039-2499|doi=10.1161/STROKEAHA.120.030335}}</ref>
 
 
 
*There is no specific classification established for 'Stroke in COVID-19 patients'. It is same as the general classification of [[stroke]].<ref name="Theofanidis2015">{{cite journal|last1=Theofanidis|first1=Dimitrios|title=From Apoplexy to Brain Attack, a Historical Perspective on Stroke to Date|journal=Journal of Nursing & Care|volume=04|issue=01|year=2015|issn=21671168|doi=10.4172/2167-1168.1000e121}}</ref>
 
 
 
*The most common type of [[stroke]] in patients with [[COVID-19]] is [[ischemic]].<ref name="QureshiAbd-Allah2020" />
 
*The exact pathophysiology of 'stroke in COVID-19' is not fully understood. However, it is thought that stroke in [[COVID-19]] could be due to one of the following pathophysiologies-
**Sepsis induced coagulopathy:
***Sepsis induced coagulopathy in [[COVID-19]] patients is thought to be contributing to [[microthromobosis]]. This is supported by elevation of [[D-dimer]] and [[C-reactive protein]], which are [[hypercoagulability]] and inflammatory markers, in COVID-19 positive patients.
**The angiotensin-converting enzyme II''':'''
*** (ACEII) receptors are also present on the vascular endothelial cells and neural cells in the brain .
***These receptors expressed in the  brain are responsible for sympathoadrenal system regulation, and vascular autoregulation<ref name="Saavedra2005">{{cite journal|last1=Saavedra|first1=Juan M.|title=Brain Angiotensin II: New Developments, Unanswered Questions and Therapeutic Opportunities|journal=Cellular and Molecular Neurobiology|volume=25|issue=3-4|year=2005|pages=485–512|issn=0272-4340|doi=10.1007/s10571-005-4011-5}}</ref>.
***When the virus binds to these receptors, this vascular autoregulation is hampered and can lead to elevated blood pressure, eventually leading to rupture of the [[cerebral]] vessels and intracranial hemorrhage<ref name="Sharifi-RazaviKarimi2020">{{cite journal|last1=Sharifi-Razavi|first1=A.|last2=Karimi|first2=N.|last3=Rouhani|first3=N.|title=COVID-19 and intracerebral haemorrhage: causative or coincidental?|journal=New Microbes and New Infections|volume=35|year=2020|pages=100669|issn=20522975|doi=10.1016/j.nmni.2020.100669}}</ref>.
***It does so by altering the balance of renin-angiotensin system which likely triggers endothelium dysfunction, organ damage, which eventually results in stroke<ref name="HessEldahshan2020">{{cite journal|last1=Hess|first1=David C.|last2=Eldahshan|first2=Wael|last3=Rutkowski|first3=Elizabeth|title=COVID-19-Related Stroke|journal=Translational Stroke Research|volume=11|issue=3|year=2020|pages=322–325|issn=1868-4483|doi=10.1007/s12975-020-00818-9}}</ref>.
**Viral Neurotropism and Neuroinvasion:
***Viral Neurotropism and Neuroinvasion is another possible pathogenic mechanism for cerebrovascular accidents in COVID-19 patients.
***The coronaviruses usually cause mild respiratory illness, but the beta coronavirues are known to have a role in nervous system involvement<ref name="ArbourDay2000">{{cite journal|last1=Arbour|first1=Nathalie|last2=Day|first2=Robert|last3=Newcombe|first3=Jia|last4=Talbot|first4=Pierre J.|title=Neuroinvasion by Human Respiratory Coronaviruses|journal=Journal of Virology|volume=74|issue=19|year=2000|pages=8913–8921|issn=1098-5514|doi=10.1128/JVI.74.19.8913-8921.2000}}</ref>.
***The Novel coronavirus “severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)” is a beta coronavirus, similar to severe acute respiratory syndrome coronavirus ([[SARS-CoV]]) and Middle East respiratory syndrome coronavirus ([[MERS-CoV]])<ref name="YuDu2020">{{cite journal|last1=Yu|first1=Fei|last2=Du|first2=Lanying|last3=Ojcius|first3=David M.|last4=Pan|first4=Chungen|last5=Jiang|first5=Shibo|title=Measures for diagnosing and treating infections by a novel coronavirus responsible for a pneumonia outbreak originating in Wuhan, China|journal=Microbes and Infection|volume=22|issue=2|year=2020|pages=74–79|issn=12864579|doi=10.1016/j.micinf.2020.01.003}}</ref>.
***It,therefore, has an infection mechanism and potential to invade the nervous system, similar to SARS-Cov and MERS-Cov<ref name="LiBai2020">{{cite journal|last1=Li|first1=Yan‐Chao|last2=Bai|first2=Wan‐Zhu|last3=Hashikawa|first3=Tsutomu|title=The neuroinvasive potential of SARS‐CoV2 may play a role in the respiratory failure of COVID‐19 patients|journal=Journal of Medical Virology|volume=92|issue=6|year=2020|pages=552–555|issn=0146-6615|doi=10.1002/jmv.25728}}</ref>.
***The detection of the virus in the cells of the brain on autopsy<ref name="Paniz‐MondolfiBryce2020">{{cite journal|last1=Paniz‐Mondolfi|first1=Alberto|last2=Bryce|first2=Clare|last3=Grimes|first3=Zachary|last4=Gordon|first4=Ronald E.|last5=Reidy|first5=Jason|last6=Lednicky|first6=John|last7=Sordillo|first7=Emilia Mia|last8=Fowkes|first8=Mary|title=Central nervous system involvement by severe acute respiratory syndrome coronavirus‐2 (SARS‐CoV‐2)|journal=Journal of Medical Virology|volume=92|issue=7|year=2020|pages=699–702|issn=0146-6615|doi=10.1002/jmv.25915}}</ref> (neural and capillary endothelial cells), and viral presence in the cerebrospinal fluid of the encephalitis patient infected with SARS-Cov-2<ref name="MoriguchiHarii2020">{{cite journal|last1=Moriguchi|first1=Takeshi|last2=Harii|first2=Norikazu|last3=Goto|first3=Junko|last4=Harada|first4=Daiki|last5=Sugawara|first5=Hisanori|last6=Takamino|first6=Junichi|last7=Ueno|first7=Masateru|last8=Sakata|first8=Hiroki|last9=Kondo|first9=Kengo|last10=Myose|first10=Natsuhiko|last11=Nakao|first11=Atsuhito|last12=Takeda|first12=Masayuki|last13=Haro|first13=Hirotaka|last14=Inoue|first14=Osamu|last15=Suzuki-Inoue|first15=Katsue|last16=Kubokawa|first16=Kayo|last17=Ogihara|first17=Shinji|last18=Sasaki|first18=Tomoyuki|last19=Kinouchi|first19=Hiroyuki|last20=Kojin|first20=Hiroyuki|last21=Ito|first21=Masami|last22=Onishi|first22=Hiroshi|last23=Shimizu|first23=Tatsuya|last24=Sasaki|first24=Yu|last25=Enomoto|first25=Nobuyuki|last26=Ishihara|first26=Hiroshi|last27=Furuya|first27=Shiomi|last28=Yamamoto|first28=Tomoko|last29=Shimada|first29=Shinji|title=A first case of meningitis/encephalitis associated with SARS-Coronavirus-2|journal=International Journal of Infectious Diseases|volume=94|year=2020|pages=55–58|issn=12019712|doi=10.1016/j.ijid.2020.03.062}}</ref> supports the neuro-invasiveness of the virus. The two possible routes are retrograde axonal transport (via nasal cavity) or hematogenous spread (via blood brain barrier endothelial cells)<ref name="Paniz‐MondolfiBryce2020">{{cite journal|last1=Paniz‐Mondolfi|first1=Alberto|last2=Bryce|first2=Clare|last3=Grimes|first3=Zachary|last4=Gordon|first4=Ronald E.|last5=Reidy|first5=Jason|last6=Lednicky|first6=John|last7=Sordillo|first7=Emilia Mia|last8=Fowkes|first8=Mary|title=Central nervous system involvement by severe acute respiratory syndrome coronavirus‐2 (SARS‐CoV‐2)|journal=Journal of Medical Virology|volume=92|issue=7|year=2020|pages=699–702|issn=0146-6615|doi=10.1002/jmv.25915}}</ref>.
***Once the virus reaches the brain, it attaches to the ACE II receptors.
**Direct entry into brain tissues:
***Direct entry into brain tissues from cribriform plate to brain<ref name="BaigKhaleeq2020">{{cite journal|last1=Baig|first1=Abdul Mannan|last2=Khaleeq|first2=Areeba|last3=Ali|first3=Usman|last4=Syeda|first4=Hira|title=Evidence of the COVID-19 Virus Targeting the CNS: Tissue Distribution, Host–Virus Interaction, and Proposed Neurotropic Mechanisms|journal=ACS Chemical Neuroscience|volume=11|issue=7|year=2020|pages=995–998|issn=1948-7193|doi=10.1021/acschemneuro.0c00122}}</ref>.
***wwwwThis is one of the proposed mechanism as COVID-19 positive patients also presented with anosmia and hyposmia which possibly occurs due to viral effect on olfactory bulb, which is in close proximity to cribriform plate'''<ref name="MaoJin2020">{{cite journal|last1=Mao|first1=Ling|last2=Jin|first2=Huijuan|last3=Wang|first3=Mengdie|last4=Hu|first4=Yu|last5=Chen|first5=Shengcai|last6=He|first6=Quanwei|last7=Chang|first7=Jiang|last8=Hong|first8=Candong|last9=Zhou|first9=Yifan|last10=Wang|first10=David|last11=Miao|first11=Xiaoping|last12=Li|first12=Yanan|last13=Hu|first13=Bo|title=Neurologic Manifestations of Hospitalized Patients With Coronavirus Disease 2019 in Wuhan, China|journal=JAMA Neurology|volume=77|issue=6|year=2020|pages=683|issn=2168-6149|doi=10.1001/jamaneurol.2020.1127}}</ref>'''
 
 
Stroke should be differentiated from other causes of muscle weakness and paralysis. The differentials include the following:<ref name="pmid29433111">{{cite journal |vauthors=Kira R |title=[Acute Flaccid Myelitis] |language=Japanese |journal=Brain Nerve |volume=70 |issue=2 |pages=99–112 |date=February 2018 |pmid=29433111 |doi=10.11477/mf.1416200962 |url=}}</ref><ref name="pmid29433111">{{cite journal |vauthors=Kira R |title=[Acute Flaccid Myelitis] |language=Japanese |journal=Brain Nerve |volume=70 |issue=2 |pages=99–112 |date=February 2018 |pmid=29433111 |doi=10.11477/mf.1416200962 |url=}}</ref><ref name="pmid29181601">{{cite journal |vauthors=Hopkins SE |title=Acute Flaccid Myelitis: Etiologic Challenges, Diagnostic and Management Considerations |journal=Curr Treat Options Neurol |volume=19 |issue=12 |pages=48 |date=November 2017 |pmid=29181601 |doi=10.1007/s11940-017-0480-3 |url=}}</ref><ref name="pmid27422805">{{cite journal |vauthors=Messacar K, Schreiner TL, Van Haren K, Yang M, Glaser CA, Tyler KL, Dominguez SR |title=Acute flaccid myelitis: A clinical review of US cases 2012-2015 |journal=Ann. Neurol. |volume=80 |issue=3 |pages=326–38 |date=September 2016 |pmid=27422805 |pmc=5098271 |doi=10.1002/ana.24730 |url=}}</ref><ref name="pmid29028962">{{cite journal |vauthors=Chong PF, Kira R, Mori H, Okumura A, Torisu H, Yasumoto S, Shimizu H, Fujimoto T, Hanaoka N, Kusunoki S, Takahashi T, Oishi K, Tanaka-Taya K |title=Clinical Features of Acute Flaccid Myelitis Temporally Associated With an Enterovirus D68 Outbreak: Results of a Nationwide Survey of Acute Flaccid Paralysis in Japan, August-December 2015 |journal=Clin. Infect. Dis. |volume=66 |issue=5 |pages=653–664 |date=February 2018 |pmid=29028962 |pmc=5850449 |doi=10.1093/cid/cix860 |url=}}</ref><ref name="pmid29482893">{{cite journal |vauthors=Messacar K, Asturias EJ, Hixon AM, Van Leer-Buter C, Niesters HGM, Tyler KL, Abzug MJ, Dominguez SR |title=Enterovirus D68 and acute flaccid myelitis-evaluating the evidence for causality |journal=Lancet Infect Dis |volume=18 |issue=8 |pages=e239–e247 |date=August 2018 |pmid=29482893 |doi=10.1016/S1473-3099(18)30094-X |url=}}</ref><ref name="pmid30200066">{{cite journal |vauthors=Chen IJ, Hu SC, Hung KL, Lo CW |title=Acute flaccid myelitis associated with enterovirus D68 infection: A case report |journal=Medicine (Baltimore) |volume=97 |issue=36 |pages=e11831 |date=September 2018 |pmid=30200066 |pmc=6133480 |doi=10.1097/MD.0000000000011831 |url=}}</ref><ref name="urlBotulism | Botulism | CDC">{{cite web |url=https://www.cdc.gov/botulism/index.html |title=Botulism &#124; Botulism &#124; CDC |format= |work= |accessdate=}}</ref><ref name="pmid3290234">{{cite journal |vauthors=McCroskey LM, Hatheway CL |title=Laboratory findings in four cases of adult botulism suggest colonization of the intestinal tract |journal=J. Clin. Microbiol. |volume=26 |issue=5 |pages=1052–4 |date=May 1988 |pmid=3290234 |pmc=266519 |doi= |url=}}</ref><ref name="pmid16614251">{{cite journal |vauthors=Lindström M, Korkeala H |title=Laboratory diagnostics of botulism |journal=Clin. Microbiol. Rev. |volume=19 |issue=2 |pages=298–314 |date=April 2006 |pmid=16614251 |pmc=1471988 |doi=10.1128/CMR.19.2.298-314.2006 |url=}}</ref><ref name="pmid17224901">{{cite journal |vauthors=Brook I |title=Botulism: the challenge of diagnosis and treatment |journal=Rev Neurol Dis |volume=3 |issue=4 |pages=182–9 |date=2006 |pmid=17224901 |doi= |url=}}</ref><ref name="pmid23642721">{{cite journal |vauthors=Dimachkie MM, Barohn RJ |title=Guillain-Barré syndrome and variants |journal=Neurol Clin |volume=31 |issue=2 |pages=491–510 |date=May 2013 |pmid=23642721 |pmc=3939842 |doi=10.1016/j.ncl.2013.01.005 |url=}}</ref><ref name="pmid23418763">{{cite journal |vauthors=Walling AD, Dickson G |title=Guillain-Barré syndrome |journal=Am Fam Physician |volume=87 |issue=3 |pages=191–7 |date=February 2013 |pmid=23418763 |doi= |url=}}</ref><ref name="pmid21969911">{{cite journal |vauthors=Gilhus NE |title=Lambert-eaton myasthenic syndrome; pathogenesis, diagnosis, and therapy |journal=Autoimmune Dis |volume=2011 |issue= |pages=973808 |date=2011 |pmid=21969911 |pmc=3182560 |doi=10.4061/2011/973808 |url=}}</ref><ref name="pmid14977560">{{cite journal |vauthors=Krishnan C, Kaplin AI, Deshpande DM, Pardo CA, Kerr DA |title=Transverse Myelitis: pathogenesis, diagnosis and treatment |journal=Front. Biosci. |volume=9 |issue= |pages=1483–99 |date=May 2004 |pmid=14977560 |doi= |url=}}</ref><ref name="pmid24305450">{{cite journal |vauthors=Amato AA, Greenberg SA |title=Inflammatory myopathies |journal=Continuum (Minneap Minn) |volume=19 |issue=6 Muscle Disease |pages=1615–33 |date=December 2013 |pmid=24305450 |doi=10.1212/01.CON.0000440662.26427.bd |url=}}</ref><ref name="pmid24365430">{{cite journal |vauthors=Berger JR, Dean D |title=Neurosyphilis |journal=Handb Clin Neurol |volume=121 |issue= |pages=1461–72 |date=2014 |pmid=24365430 |doi=10.1016/B978-0-7020-4088-7.00098-5 |url=}}</ref>
 
*Stroke was first recognized by Hippocrates, in the fourth century BC, almost 2,400 years ago, and it was reffered to as [[Apoplexy]], a Greek medical literature term, which means 'struk down by violence'. Later, renaissance anatomists, in mid-16th century A.D., explained the pathophysiology of stroke, differentiating the causes as bleeding or blockage of A cerebral artery.<ref name="Theofanidis2015">{{cite journal|last1=Theofanidis|first1=Dimitrios|title=From Apoplexy to Brain Attack, a Historical Perspective on Stroke to Date|journal=Journal of Nursing & Care|volume=04|issue=01|year=2015|issn=21671168|doi=10.4172/2167-1168.1000e121}}</ref>
 
*Mao et al., in his study, first reported neurological symptoms in [[COVID-19]] patients hospitalized in Wuhan, China from January 16, 2020, to February 19, 2020. Neurological symptoms were reported in 78 patients out of 214 Covid-19 positive hospitalized patients with [[COVID-19]] in Wuhan, China. The stroke patients reported specifically were 14<ref name="MaoJin2020">{{cite journal|last1=Mao|first1=Ling|last2=Jin|first2=Huijuan|last3=Wang|first3=Mengdie|last4=Hu|first4=Yu|last5=Chen|first5=Shengcai|last6=He|first6=Quanwei|last7=Chang|first7=Jiang|last8=Hong|first8=Candong|last9=Zhou|first9=Yifan|last10=Wang|first10=David|last11=Miao|first11=Xiaoping|last12=Li|first12=Yanan|last13=Hu|first13=Bo|title=Neurologic Manifestations of Hospitalized Patients With Coronavirus Disease 2019 in Wuhan, China|journal=JAMA Neurology|volume=77|issue=6|year=2020|pages=683|issn=2168-6149|doi=10.1001/jamaneurol.2020.1127}}</ref>. In this study, patients with cardiovascular risk factors who presented with severe systemic symptoms were at higher risk of stroke.
 
*Yaghi et al. retrospectively examined [[stroke]] patients admitted across different locations of NYU Langone hospital in New York. In this study, the incidence of 0.9% was observed in laboratory confirmed COVID-19 positive patients included in this study. [[Stroke]] diagnosis was proved by imaging, and [[cryptogenic]] [[stroke]] was seen in most of these patients. The mortality was much higher in stroke patients who were [[COVID-19]] positive.<ref name="YaghiIshida2020">{{cite journal|last1=Yaghi|first1=Shadi|last2=Ishida|first2=Koto|last3=Torres|first3=Jose|last4=Mac Grory|first4=Brian|last5=Raz|first5=Eytan|last6=Humbert|first6=Kelley|last7=Henninger|first7=Nils|last8=Trivedi|first8=Tushar|last9=Lillemoe|first9=Kaitlyn|last10=Alam|first10=Shazia|last11=Sanger|first11=Matthew|last12=Kim|first12=Sun|last13=Scher|first13=Erica|last14=Dehkharghani|first14=Seena|last15=Wachs|first15=Michael|last16=Tanweer|first16=Omar|last17=Volpicelli|first17=Frank|last18=Bosworth|first18=Brian|last19=Lord|first19=Aaron|last20=Frontera|first20=Jennifer|title=SARS-CoV-2 and Stroke in a New York Healthcare System|journal=Stroke|volume=51|issue=7|year=2020|pages=2002–2011|issn=0039-2499|doi=10.1161/STROKEAHA.120.030335}}</ref>
 
 
 
*There is no specific classification established for 'Stroke in COVID-19 patients'. It is same as the general classification of [[stroke]].<ref name="Theofanidis2015">{{cite journal|last1=Theofanidis|first1=Dimitrios|title=From Apoplexy to Brain Attack, a Historical Perspective on Stroke to Date|journal=Journal of Nursing & Care|volume=04|issue=01|year=2015|issn=21671168|doi=10.4172/2167-1168.1000e121}}</ref>
 
 
 
*The most common type of [[stroke]] in patients with [[COVID-19]] is [[ischemic]].<ref name="QureshiAbd-Allah2020" />The exact pathophysiology of 'stroke in COVID-19' is not fully understood.
*However, it is thought that stroke in [[COVID-19]] could be due to one of the following pathophysiologies-
**Sepsis induced coagulopathy:
***in [[COVID-19]] patients is thought to be contributing to [[microthromobosis]]. This is supported by elevation of [[D-dimer]] and [[C-reactive protein]], which are [[hypercoagulability]] and inflammatory markers, in COVID-19 positive patients.
**The angiotensin-converting enzyme II:
***(ACEII) receptors are also present on the vascular endothelial cells and neural cells in the brain .
***These receptors expressed in the  brain are responsible for sympathoadrenal system regulation, and vascular autoregulation<ref name="Saavedra2005" />.
***When the virus binds to these receptors, this vascular autoregulation is hampered and can lead to elevated blood pressure, eventually leading to rupture of the [[cerebral]] vessels and intracranial hemorrhage<ref name="Sharifi-RazaviKarimi2020" />.
***It does so by altering the balance of renin-angiotensin system which likely triggers endothelium dysfunction, organ damage, which eventually results in stroke<ref name="HessEldahshan2020" />.
**Viral Neurotropism and Neuroinvasion:
***This is another possible pathogenic mechanism for cerebrovascular accidents in COVID-19 patients.
***The coronaviruses usually cause mild respiratory illness, but the beta coronavirues are known to have a role in nervous system involvement<ref name="ArbourDay2000" />.
***The Novel coronavirus “severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)” is a beta coronavirus, similar to severe acute respiratory syndrome coronavirus ([[SARS-CoV]]) and Middle East respiratory syndrome coronavirus ([[MERS-CoV]])<ref name="YuDu2020" />.
***It, therefore, has an infection mechanism and potential to invade the nervous system, similar to SARS-Cov and MERS-Cov<ref name="LiBai2020" />.
***The detection of the virus in the cells of the brain on autopsy<ref name="Paniz‐MondolfiBryce2020" /> (neural and capillary endothelial cells), and viral presence in the cerebrospinal fluid of the encephalitis patient infected with SARS-Cov-2<ref name="MoriguchiHarii2020" /> supports the neuro-invasiveness of the virus.
***The two possible routes are retrograde axonal transport (via nasal cavity) or hematogenous spread (via blood brain barrier endothelial cells)<ref name="Paniz‐MondolfiBryce2020" />.
***Once the virus reaches the brain, it attaches to the ACE II receptors.
**Direct entry into brain tissues:
***Direct invasion from cribriform plate to brain<ref name="BaigKhaleeq2020" />. This is one of the proposed mechanism as COVID-19 positive patients also presented with anosmia and hyposmia which possibly occurs due to viral effect on olfactory bulb, which is in close proximity to cribriform plate'''<ref name="MaoJin2020" />'''
**
 
 
Stroke should be differentiated from other causes of muscle weakness and paralysis. The differentials include the following:<ref name="pmid29433111">{{cite journal |vauthors=Kira R |title=[Acute Flaccid Myelitis] |language=Japanese |journal=Brain Nerve |volume=70 |issue=2 |pages=99–112 |date=February 2018 |pmid=29433111 |doi=10.11477/mf.1416200962 |url=}}</ref><ref name="pmid29433111">{{cite journal |vauthors=Kira R |title=[Acute Flaccid Myelitis] |language=Japanese |journal=Brain Nerve |volume=70 |issue=2 |pages=99–112 |date=February 2018 |pmid=29433111 |doi=10.11477/mf.1416200962 |url=}}</ref><ref name="pmid29181601">{{cite journal |vauthors=Hopkins SE |title=Acute Flaccid Myelitis: Etiologic Challenges, Diagnostic and Management Considerations |journal=Curr Treat Options Neurol |volume=19 |issue=12 |pages=48 |date=November 2017 |pmid=29181601 |doi=10.1007/s11940-017-0480-3 |url=}}</ref><ref name="pmid27422805">{{cite journal |vauthors=Messacar K, Schreiner TL, Van Haren K, Yang M, Glaser CA, Tyler KL, Dominguez SR |title=Acute flaccid myelitis: A clinical review of US cases 2012-2015 |journal=Ann. Neurol. |volume=80 |issue=3 |pages=326–38 |date=September 2016 |pmid=27422805 |pmc=5098271 |doi=10.1002/ana.24730 |url=}}</ref><ref name="pmid29028962">{{cite journal |vauthors=Chong PF, Kira R, Mori H, Okumura A, Torisu H, Yasumoto S, Shimizu H, Fujimoto T, Hanaoka N, Kusunoki S, Takahashi T, Oishi K, Tanaka-Taya K |title=Clinical Features of Acute Flaccid Myelitis Temporally Associated With an Enterovirus D68 Outbreak: Results of a Nationwide Survey of Acute Flaccid Paralysis in Japan, August-December 2015 |journal=Clin. Infect. Dis. |volume=66 |issue=5 |pages=653–664 |date=February 2018 |pmid=29028962 |pmc=5850449 |doi=10.1093/cid/cix860 |url=}}</ref><ref name="pmid29482893">{{cite journal |vauthors=Messacar K, Asturias EJ, Hixon AM, Van Leer-Buter C, Niesters HGM, Tyler KL, Abzug MJ, Dominguez SR |title=Enterovirus D68 and acute flaccid myelitis-evaluating the evidence for causality |journal=Lancet Infect Dis |volume=18 |issue=8 |pages=e239–e247 |date=August 2018 |pmid=29482893 |doi=10.1016/S1473-3099(18)30094-X |url=}}</ref><ref name="pmid30200066">{{cite journal |vauthors=Chen IJ, Hu SC, Hung KL, Lo CW |title=Acute flaccid myelitis associated with enterovirus D68 infection: A case report |journal=Medicine (Baltimore) |volume=97 |issue=36 |pages=e11831 |date=September 2018 |pmid=30200066 |pmc=6133480 |doi=10.1097/MD.0000000000011831 |url=}}</ref><ref name="urlBotulism | Botulism | CDC">{{cite web |url=https://www.cdc.gov/botulism/index.html |title=Botulism &#124; Botulism &#124; CDC |format= |work= |accessdate=}}</ref><ref name="pmid3290234">{{cite journal |vauthors=McCroskey LM, Hatheway CL |title=Laboratory findings in four cases of adult botulism suggest colonization of the intestinal tract |journal=J. Clin. Microbiol. |volume=26 |issue=5 |pages=1052–4 |date=May 1988 |pmid=3290234 |pmc=266519 |doi= |url=}}</ref><ref name="pmid16614251">{{cite journal |vauthors=Lindström M, Korkeala H |title=Laboratory diagnostics of botulism |journal=Clin. Microbiol. Rev. |volume=19 |issue=2 |pages=298–314 |date=April 2006 |pmid=16614251 |pmc=1471988 |doi=10.1128/CMR.19.2.298-314.2006 |url=}}</ref><ref name="pmid17224901">{{cite journal |vauthors=Brook I |title=Botulism: the challenge of diagnosis and treatment |journal=Rev Neurol Dis |volume=3 |issue=4 |pages=182–9 |date=2006 |pmid=17224901 |doi= |url=}}</ref><ref name="pmid23642721">{{cite journal |vauthors=Dimachkie MM, Barohn RJ |title=Guillain-Barré syndrome and variants |journal=Neurol Clin |volume=31 |issue=2 |pages=491–510 |date=May 2013 |pmid=23642721 |pmc=3939842 |doi=10.1016/j.ncl.2013.01.005 |url=}}</ref><ref name="pmid23418763">{{cite journal |vauthors=Walling AD, Dickson G |title=Guillain-Barré syndrome |journal=Am Fam Physician |volume=87 |issue=3 |pages=191–7 |date=February 2013 |pmid=23418763 |doi= |url=}}</ref><ref name="pmid21969911">{{cite journal |vauthors=Gilhus NE |title=Lambert-eaton myasthenic syndrome; pathogenesis, diagnosis, and therapy |journal=Autoimmune Dis |volume=2011 |issue= |pages=973808 |date=2011 |pmid=21969911 |pmc=3182560 |doi=10.4061/2011/973808 |url=}}</ref><ref name="pmid14977560">{{cite journal |vauthors=Krishnan C, Kaplin AI, Deshpande DM, Pardo CA, Kerr DA |title=Transverse Myelitis: pathogenesis, diagnosis and treatment |journal=Front. Biosci. |volume=9 |issue= |pages=1483–99 |date=May 2004 |pmid=14977560 |doi= |url=}}</ref><ref name="pmid24305450">{{cite journal |vauthors=Amato AA, Greenberg SA |title=Inflammatory myopathies |journal=Continuum (Minneap Minn) |volume=19 |issue=6 Muscle Disease |pages=1615–33 |date=December 2013 |pmid=24305450 |doi=10.1212/01.CON.0000440662.26427.bd |url=}}</ref><ref name="pmid24365430">{{cite journal |vauthors=Berger JR, Dean D |title=Neurosyphilis |journal=Handb Clin Neurol |volume=121 |issue= |pages=1461–72 |date=2014 |pmid=24365430 |doi=10.1016/B978-0-7020-4088-7.00098-5 |url=}}</ref>
{|
*Stroke was first recognized by Hippocrates, in the fourth century BC, almost 2,400 years ago, and it was reffered to as [[Apoplexy]], a Greek medical literature term, which means 'struk down by violence'. Later, renaissance anatomists, in mid-16th century A.D., explained the pathophysiology of stroke, differentiating the causes as bleeding or blockage of A cerebral artery.<ref name="Theofanidis2015">{{cite journal|last1=Theofanidis|first1=Dimitrios|title=From Apoplexy to Brain Attack, a Historical Perspective on Stroke to Date|journal=Journal of Nursing & Care|volume=04|issue=01|year=2015|issn=21671168|doi=10.4172/2167-1168.1000e121}}</ref>


*Mao et al., in his study, first reported neurological symptoms in [[COVID-19]] patients hospitalized in Wuhan, China from January 16, 2020, to February 19, 2020. Neurological symptoms were reported in 78 patients out of 214 Covid-19 positive hospitalized patients with [[COVID-19]] in Wuhan, China. The stroke patients reported specifically were 14<ref name="MaoJin2020">{{cite journal|last1=Mao|first1=Ling|last2=Jin|first2=Huijuan|last3=Wang|first3=Mengdie|last4=Hu|first4=Yu|last5=Chen|first5=Shengcai|last6=He|first6=Quanwei|last7=Chang|first7=Jiang|last8=Hong|first8=Candong|last9=Zhou|first9=Yifan|last10=Wang|first10=David|last11=Miao|first11=Xiaoping|last12=Li|first12=Yanan|last13=Hu|first13=Bo|title=Neurologic Manifestations of Hospitalized Patients With Coronavirus Disease 2019 in Wuhan, China|journal=JAMA Neurology|volume=77|issue=6|year=2020|pages=683|issn=2168-6149|doi=10.1001/jamaneurol.2020.1127}}</ref>. In this study, patients with cardiovascular risk factors who presented with severe systemic symptoms were at higher risk of stroke.
*There is no specific classification established for 'Stroke in [[COVID-19]] patients'.
 
*It is same as the general classification of [[stroke]].<ref name="Theofanidis20152" />
*Yaghi et al. retrospectively examined [[stroke]] patients admitted across different locations of NYU Langone hospital in New York. In this study, the incidence of 0.9% was observed in laboratory confirmed COVID-19 positive patients included in this study. [[Stroke]] diagnosis was proved by imaging, and [[cryptogenic]] [[stroke]] was seen in most of these patients. The mortality was much higher in stroke patients who were [[COVID-19]] positive.<ref name="YaghiIshida2020">{{cite journal|last1=Yaghi|first1=Shadi|last2=Ishida|first2=Koto|last3=Torres|first3=Jose|last4=Mac Grory|first4=Brian|last5=Raz|first5=Eytan|last6=Humbert|first6=Kelley|last7=Henninger|first7=Nils|last8=Trivedi|first8=Tushar|last9=Lillemoe|first9=Kaitlyn|last10=Alam|first10=Shazia|last11=Sanger|first11=Matthew|last12=Kim|first12=Sun|last13=Scher|first13=Erica|last14=Dehkharghani|first14=Seena|last15=Wachs|first15=Michael|last16=Tanweer|first16=Omar|last17=Volpicelli|first17=Frank|last18=Bosworth|first18=Brian|last19=Lord|first19=Aaron|last20=Frontera|first20=Jennifer|title=SARS-CoV-2 and Stroke in a New York Healthcare System|journal=Stroke|volume=51|issue=7|year=2020|pages=2002–2011|issn=0039-2499|doi=10.1161/STROKEAHA.120.030335}}</ref>
 
==Classification==
*There is no specific classification established for 'Stroke in COVID-19 patients'. It is same as the general classification of [[stroke]].<ref name="Theofanidis2015">{{cite journal|last1=Theofanidis|first1=Dimitrios|title=From Apoplexy to Brain Attack, a Historical Perspective on Stroke to Date|journal=Journal of Nursing & Care|volume=04|issue=01|year=2015|issn=21671168|doi=10.4172/2167-1168.1000e121}}</ref>


*[[Stroke]] can be classified into
*[[Stroke]] can be classified into
Line 122: Line 35:
***[[Epidural hemorrhage]]
***[[Epidural hemorrhage]]


To view classification of COVID-19 section, click [[COVID-19 classification|here]].
==Pathophysiology==
==Pathophysiology==


*The most common type of [[stroke]] in patients with [[COVID-19]] is [[ischemic]].<ref name="QureshiAbd-Allah2020" />
*The exact [[pathophysiology]] of [[stroke]] in [[COVID-19]] is not fully understood.
*However, it is thought that stroke in [[COVID-19]] could be due to one of the following [[Pathophysiology|pathophysiologies]]
**Sepsis induced coagulopathy:
***[[Sepsis]] induced [[coagulopathy]] in [[COVID-19]] patients is thought to be contributing to [[microthromobosis]].
*** This is supported by elevation of [[D-dimer]] and [[C-reactive protein]], which are [[hypercoagulability]] and inflammatory markers, in [[COVID-19]] positive patients.
**The [[Angiotensin-converting enzyme 2|angiotensin-converting enzyme II:]]
***([[ACE|ACEII]]) receptors are also present on the vascular [[Endothelial cell|endothelial cells]] and neural cells in the [[brain]] .
***These receptors expressed in the  brain are responsible for [[sympathoadrenal]] system regulation, and vascular autoregulation<ref name="Saavedra2005">{{cite journal|last1=Saavedra|first1=Juan M.|title=Brain Angiotensin II: New Developments, Unanswered Questions and Therapeutic Opportunities|journal=Cellular and Molecular Neurobiology|volume=25|issue=3-4|year=2005|pages=485–512|issn=0272-4340|doi=10.1007/s10571-005-4011-5}}</ref>.
***When the [[virus]] binds to these receptors, this vascular autoregulation is hampered and can lead to elevated [[blood pressure]], eventually leading to rupture of the [[cerebral]] vessels and [[intracranial hemorrhage]]<ref name="Sharifi-RazaviKarimi2020">{{cite journal|last1=Sharifi-Razavi|first1=A.|last2=Karimi|first2=N.|last3=Rouhani|first3=N.|title=COVID-19 and intracerebral haemorrhage: causative or coincidental?|journal=New Microbes and New Infections|volume=35|year=2020|pages=100669|issn=20522975|doi=10.1016/j.nmni.2020.100669}}</ref>.
***It does so by altering the balance of [[renin-angiotensin system]] which likely triggers [[endothelium]] dysfunction, organ damage, which eventually results in stroke<ref name="HessEldahshan2020">{{cite journal|last1=Hess|first1=David C.|last2=Eldahshan|first2=Wael|last3=Rutkowski|first3=Elizabeth|title=COVID-19-Related Stroke|journal=Translational Stroke Research|volume=11|issue=3|year=2020|pages=322–325|issn=1868-4483|doi=10.1007/s12975-020-00818-9}}</ref>.
**Viral [[neurotropism]] and neuroinvasion
***Viral [[Neurotropism]] and Neuroinvasion is another possible pathogenic mechanism for [[Cerebrovascular accident|cerebrovascular accidents]] in COVID-19 patients.
***The [[coronaviruses]] usually cause mild [[respiratory illness]], but the beta coronavirues are known to have a role in [[nervous system]] involvement<ref name="ArbourDay2000">{{cite journal|last1=Arbour|first1=Nathalie|last2=Day|first2=Robert|last3=Newcombe|first3=Jia|last4=Talbot|first4=Pierre J.|title=Neuroinvasion by Human Respiratory Coronaviruses|journal=Journal of Virology|volume=74|issue=19|year=2000|pages=8913–8921|issn=1098-5514|doi=10.1128/JVI.74.19.8913-8921.2000}}</ref>.
***The Novel [[coronavirus]] “[[severe acute respiratory syndrome]] coronavirus 2 ([[SARS-CoV-2]])” is a beta coronavirus, similar to severe acute respiratory syndrome coronavirus ([[SARS-CoV]]) and [[Middle East respiratory syndrome coronavirus infection|Middle East respiratory syndrome coronavirus]] ([[MERS-CoV]])<ref name="YuDu2020">{{cite journal|last1=Yu|first1=Fei|last2=Du|first2=Lanying|last3=Ojcius|first3=David M.|last4=Pan|first4=Chungen|last5=Jiang|first5=Shibo|title=Measures for diagnosing and treating infections by a novel coronavirus responsible for a pneumonia outbreak originating in Wuhan, China|journal=Microbes and Infection|volume=22|issue=2|year=2020|pages=74–79|issn=12864579|doi=10.1016/j.micinf.2020.01.003}}</ref>.
***It,therefore, has an infection mechanism and potential to invade the [[nervous system]], similar to [[SARS-CoV-2|SARS-Cov]] and [[MERS-CoV|MERS-Cov]]<ref name="LiBai2020">{{cite journal|last1=Li|first1=Yan‐Chao|last2=Bai|first2=Wan‐Zhu|last3=Hashikawa|first3=Tsutomu|title=The neuroinvasive potential of SARS‐CoV2 may play a role in the respiratory failure of COVID‐19 patients|journal=Journal of Medical Virology|volume=92|issue=6|year=2020|pages=552–555|issn=0146-6615|doi=10.1002/jmv.25728}}</ref>. The detection of the virus in the cells of the [[brain]] on [[autopsy]]<ref name="Paniz‐MondolfiBryce20202">{{cite journal|last1=Paniz‐Mondolfi|first1=Alberto|last2=Bryce|first2=Clare|last3=Grimes|first3=Zachary|last4=Gordon|first4=Ronald E.|last5=Reidy|first5=Jason|last6=Lednicky|first6=John|last7=Sordillo|first7=Emilia Mia|last8=Fowkes|first8=Mary|title=Central nervous system involvement by severe acute respiratory syndrome coronavirus‐2 (SARS‐CoV‐2)|journal=Journal of Medical Virology|volume=92|issue=7|year=2020|pages=699–702|issn=0146-6615|doi=10.1002/jmv.25915}}</ref> (neural and capillary [[endothelial cells]]), and viral presence in the [[CSF|cerebrospinal fluid]] of the [[encephalitis]] patient infected with [[SARS-CoV-2|SARS-Cov-2]]<ref name="MoriguchiHarii2020">{{cite journal|last1=Moriguchi|first1=Takeshi|last2=Harii|first2=Norikazu|last3=Goto|first3=Junko|last4=Harada|first4=Daiki|last5=Sugawara|first5=Hisanori|last6=Takamino|first6=Junichi|last7=Ueno|first7=Masateru|last8=Sakata|first8=Hiroki|last9=Kondo|first9=Kengo|last10=Myose|first10=Natsuhiko|last11=Nakao|first11=Atsuhito|last12=Takeda|first12=Masayuki|last13=Haro|first13=Hirotaka|last14=Inoue|first14=Osamu|last15=Suzuki-Inoue|first15=Katsue|last16=Kubokawa|first16=Kayo|last17=Ogihara|first17=Shinji|last18=Sasaki|first18=Tomoyuki|last19=Kinouchi|first19=Hiroyuki|last20=Kojin|first20=Hiroyuki|last21=Ito|first21=Masami|last22=Onishi|first22=Hiroshi|last23=Shimizu|first23=Tatsuya|last24=Sasaki|first24=Yu|last25=Enomoto|first25=Nobuyuki|last26=Ishihara|first26=Hiroshi|last27=Furuya|first27=Shiomi|last28=Yamamoto|first28=Tomoko|last29=Shimada|first29=Shinji|title=A first case of meningitis/encephalitis associated with SARS-Coronavirus-2|journal=International Journal of Infectious Diseases|volume=94|year=2020|pages=55–58|issn=12019712|doi=10.1016/j.ijid.2020.03.062}}</ref> supports the neuro-invasiveness of the virus.
***The two possible routes are retrograde [[axonal]] transport (via [[nasal cavity]]) or hematogenous spread (via blood brain barrier [[endothelial cells]])<ref name="Paniz‐MondolfiBryce20202" />. Once the virus reaches the brain, it attaches to the [[ACE|ACE II]] receptors.
**Direct entry into brain tissues:
*** Direct entry into [[brain]] tissues from cribriform plate to brain<ref name="BaigKhaleeq2020">{{cite journal|last1=Baig|first1=Abdul Mannan|last2=Khaleeq|first2=Areeba|last3=Ali|first3=Usman|last4=Syeda|first4=Hira|title=Evidence of the COVID-19 Virus Targeting the CNS: Tissue Distribution, Host–Virus Interaction, and Proposed Neurotropic Mechanisms|journal=ACS Chemical Neuroscience|volume=11|issue=7|year=2020|pages=995–998|issn=1948-7193|doi=10.1021/acschemneuro.0c00122}}</ref>. This is one of the proposed mechanism as [[COVID-19]] positive patients also presented with [[anosmia]] and hyposmia which possibly occurs due to viral effect on [[olfactory bulb]], which is in close proximity to [[cribriform plate]]'''<ref name="MaoJin20202" />'''


*The exact pathophysiology of 'stroke in COVID-19' is not fully understood. However, it is thought that stroke in [[COVID-19]] could be due to one of the following pathophysiologies-
*Further investigations should be done to better understand the mechanism of [[Stroke]] in patients with [[COVID-19]].
**'''[[Sepsis]] induced [[coagulopathy]]''' in [[COVID-19]] patients is thought to be contributing to [[microthromobosis]]. This is supported by elevation of [[D-dimer]] and [[C-reactive protein]], which are [[hypercoagulability]] and inflammatory markers, in COVID-19 positive patients.
**The '''[[angiotensin-converting enzyme]] II (ACEII) receptors''' are also present on the vascular endothelial cells and neural cells in the brain . These receptors expressed in the  brain are responsible for sympathoadrenal system regulation, and vascular autoregulation<ref name="Saavedra2005">{{cite journal|last1=Saavedra|first1=Juan M.|title=Brain Angiotensin II: New Developments, Unanswered Questions and Therapeutic Opportunities|journal=Cellular and Molecular Neurobiology|volume=25|issue=3-4|year=2005|pages=485–512|issn=0272-4340|doi=10.1007/s10571-005-4011-5}}</ref>. When the virus binds to these receptors, this vascular autoregulation is hampered and can lead to elevated blood pressure, eventually leading to rupture of the [[cerebral]] vessels and intracranial hemorrhage<ref name="Sharifi-RazaviKarimi2020">{{cite journal|last1=Sharifi-Razavi|first1=A.|last2=Karimi|first2=N.|last3=Rouhani|first3=N.|title=COVID-19 and intracerebral haemorrhage: causative or coincidental?|journal=New Microbes and New Infections|volume=35|year=2020|pages=100669|issn=20522975|doi=10.1016/j.nmni.2020.100669}}</ref>. It does so by altering the balance of renin-angiotensin system which likely triggers endothelium dysfunction, organ damage, which eventually results in stroke<ref name="HessEldahshan2020">{{cite journal|last1=Hess|first1=David C.|last2=Eldahshan|first2=Wael|last3=Rutkowski|first3=Elizabeth|title=COVID-19-Related Stroke|journal=Translational Stroke Research|volume=11|issue=3|year=2020|pages=322–325|issn=1868-4483|doi=10.1007/s12975-020-00818-9}}</ref>.
**'''Viral [[Neurotropism]] and Neuroinvasion''' is another possible pathogenic mechanism for cerebrovascular accidents in COVID-19 patients. The coronaviruses usually cause mild respiratory illness, but the beta coronavirues are known to have a role in nervous system involvement<ref name="ArbourDay2000">{{cite journal|last1=Arbour|first1=Nathalie|last2=Day|first2=Robert|last3=Newcombe|first3=Jia|last4=Talbot|first4=Pierre J.|title=Neuroinvasion by Human Respiratory Coronaviruses|journal=Journal of Virology|volume=74|issue=19|year=2000|pages=8913–8921|issn=1098-5514|doi=10.1128/JVI.74.19.8913-8921.2000}}</ref>. The Novel coronavirus “severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)” is a beta coronavirus, similar to severe acute respiratory syndrome coronavirus ([[SARS-CoV]]) and Middle East respiratory syndrome coronavirus ([[MERS-CoV]])<ref name="YuDu2020">{{cite journal|last1=Yu|first1=Fei|last2=Du|first2=Lanying|last3=Ojcius|first3=David M.|last4=Pan|first4=Chungen|last5=Jiang|first5=Shibo|title=Measures for diagnosing and treating infections by a novel coronavirus responsible for a pneumonia outbreak originating in Wuhan, China|journal=Microbes and Infection|volume=22|issue=2|year=2020|pages=74–79|issn=12864579|doi=10.1016/j.micinf.2020.01.003}}</ref>. It,therefore, has an infection mechanism and potential to invade the nervous system, similar to SARS-Cov and MERS-Cov<ref name="LiBai2020">{{cite journal|last1=Li|first1=Yan‐Chao|last2=Bai|first2=Wan‐Zhu|last3=Hashikawa|first3=Tsutomu|title=The neuroinvasive potential of SARS‐CoV2 may play a role in the respiratory failure of COVID‐19 patients|journal=Journal of Medical Virology|volume=92|issue=6|year=2020|pages=552–555|issn=0146-6615|doi=10.1002/jmv.25728}}</ref>. The detection of the virus in the cells of the brain on autopsy<ref name="Paniz‐MondolfiBryce2020">{{cite journal|last1=Paniz‐Mondolfi|first1=Alberto|last2=Bryce|first2=Clare|last3=Grimes|first3=Zachary|last4=Gordon|first4=Ronald E.|last5=Reidy|first5=Jason|last6=Lednicky|first6=John|last7=Sordillo|first7=Emilia Mia|last8=Fowkes|first8=Mary|title=Central nervous system involvement by severe acute respiratory syndrome coronavirus‐2 (SARS‐CoV‐2)|journal=Journal of Medical Virology|volume=92|issue=7|year=2020|pages=699–702|issn=0146-6615|doi=10.1002/jmv.25915}}</ref> (neural and capillary endothelial cells), and viral presence in the cerebrospinal fluid of the encephalitis patient infected with SARS-Cov-2<ref name="MoriguchiHarii2020">{{cite journal|last1=Moriguchi|first1=Takeshi|last2=Harii|first2=Norikazu|last3=Goto|first3=Junko|last4=Harada|first4=Daiki|last5=Sugawara|first5=Hisanori|last6=Takamino|first6=Junichi|last7=Ueno|first7=Masateru|last8=Sakata|first8=Hiroki|last9=Kondo|first9=Kengo|last10=Myose|first10=Natsuhiko|last11=Nakao|first11=Atsuhito|last12=Takeda|first12=Masayuki|last13=Haro|first13=Hirotaka|last14=Inoue|first14=Osamu|last15=Suzuki-Inoue|first15=Katsue|last16=Kubokawa|first16=Kayo|last17=Ogihara|first17=Shinji|last18=Sasaki|first18=Tomoyuki|last19=Kinouchi|first19=Hiroyuki|last20=Kojin|first20=Hiroyuki|last21=Ito|first21=Masami|last22=Onishi|first22=Hiroshi|last23=Shimizu|first23=Tatsuya|last24=Sasaki|first24=Yu|last25=Enomoto|first25=Nobuyuki|last26=Ishihara|first26=Hiroshi|last27=Furuya|first27=Shiomi|last28=Yamamoto|first28=Tomoko|last29=Shimada|first29=Shinji|title=A first case of meningitis/encephalitis associated with SARS-Coronavirus-2|journal=International Journal of Infectious Diseases|volume=94|year=2020|pages=55–58|issn=12019712|doi=10.1016/j.ijid.2020.03.062}}</ref> supports the neuro-invasiveness of the virus. The two possible routes are retrograde axonal transport (via nasal cavity) or hematogenous spread (via blood brain barrier endothelial cells)<ref name="Paniz‐MondolfiBryce2020">{{cite journal|last1=Paniz‐Mondolfi|first1=Alberto|last2=Bryce|first2=Clare|last3=Grimes|first3=Zachary|last4=Gordon|first4=Ronald E.|last5=Reidy|first5=Jason|last6=Lednicky|first6=John|last7=Sordillo|first7=Emilia Mia|last8=Fowkes|first8=Mary|title=Central nervous system involvement by severe acute respiratory syndrome coronavirus‐2 (SARS‐CoV‐2)|journal=Journal of Medical Virology|volume=92|issue=7|year=2020|pages=699–702|issn=0146-6615|doi=10.1002/jmv.25915}}</ref>. Once the virus reaches the brain, it attaches to the ACE II receptors.
**'''Direct entry into brain tissues''' from cribriform plate to brain<ref name="BaigKhaleeq2020">{{cite journal|last1=Baig|first1=Abdul Mannan|last2=Khaleeq|first2=Areeba|last3=Ali|first3=Usman|last4=Syeda|first4=Hira|title=Evidence of the COVID-19 Virus Targeting the CNS: Tissue Distribution, Host–Virus Interaction, and Proposed Neurotropic Mechanisms|journal=ACS Chemical Neuroscience|volume=11|issue=7|year=2020|pages=995–998|issn=1948-7193|doi=10.1021/acschemneuro.0c00122}}</ref>. This is one of the proposed mechanism as COVID-19 positive patients also presented with anosmia and hyposmia which possibly occurs due to viral effect on olfactory bulb, which is in close proximity to cribriform plate'''<ref name="MaoJin2020">{{cite journal|last1=Mao|first1=Ling|last2=Jin|first2=Huijuan|last3=Wang|first3=Mengdie|last4=Hu|first4=Yu|last5=Chen|first5=Shengcai|last6=He|first6=Quanwei|last7=Chang|first7=Jiang|last8=Hong|first8=Candong|last9=Zhou|first9=Yifan|last10=Wang|first10=David|last11=Miao|first11=Xiaoping|last12=Li|first12=Yanan|last13=Hu|first13=Bo|title=Neurologic Manifestations of Hospitalized Patients With Coronavirus Disease 2019 in Wuhan, China|journal=JAMA Neurology|volume=77|issue=6|year=2020|pages=683|issn=2168-6149|doi=10.1001/jamaneurol.2020.1127}}</ref>'''
 
Further investigations should be done to better understand the mechanism of Stroke in patients with COVID-19.


To view pathophysiology COVID-19 section, click [[COVID-19 classification|here]].
==Causes==
==Causes==


Coronavirus disease 2019 ([[COVID-19]]) associated [[stroke]] is caused by [[SARS-CoV-2]].
*Coronavirus disease 2019 ([[COVID-19]]) associated [[stroke]] is caused by [[SARS-CoV-2]].
 
*To view causes of COVID-19 section, click [[COVID-19 causes|here]].


==Differentiating COVID-19-associated stroke from other Diseases==
==Differentiating COVID-19-associated stroke from other Diseases==
Stroke should be differentiated from other causes of muscle weakness and paralysis. The differentials include the following:<ref name="pmid29433111">{{cite journal |vauthors=Kira R |title=[Acute Flaccid Myelitis] |language=Japanese |journal=Brain Nerve |volume=70 |issue=2 |pages=99–112 |date=February 2018 |pmid=29433111 |doi=10.11477/mf.1416200962 |url=}}</ref><ref name="pmid29433111">{{cite journal |vauthors=Kira R |title=[Acute Flaccid Myelitis] |language=Japanese |journal=Brain Nerve |volume=70 |issue=2 |pages=99–112 |date=February 2018 |pmid=29433111 |doi=10.11477/mf.1416200962 |url=}}</ref><ref name="pmid29181601">{{cite journal |vauthors=Hopkins SE |title=Acute Flaccid Myelitis: Etiologic Challenges, Diagnostic and Management Considerations |journal=Curr Treat Options Neurol |volume=19 |issue=12 |pages=48 |date=November 2017 |pmid=29181601 |doi=10.1007/s11940-017-0480-3 |url=}}</ref><ref name="pmid27422805">{{cite journal |vauthors=Messacar K, Schreiner TL, Van Haren K, Yang M, Glaser CA, Tyler KL, Dominguez SR |title=Acute flaccid myelitis: A clinical review of US cases 2012-2015 |journal=Ann. Neurol. |volume=80 |issue=3 |pages=326–38 |date=September 2016 |pmid=27422805 |pmc=5098271 |doi=10.1002/ana.24730 |url=}}</ref><ref name="pmid29028962">{{cite journal |vauthors=Chong PF, Kira R, Mori H, Okumura A, Torisu H, Yasumoto S, Shimizu H, Fujimoto T, Hanaoka N, Kusunoki S, Takahashi T, Oishi K, Tanaka-Taya K |title=Clinical Features of Acute Flaccid Myelitis Temporally Associated With an Enterovirus D68 Outbreak: Results of a Nationwide Survey of Acute Flaccid Paralysis in Japan, August-December 2015 |journal=Clin. Infect. Dis. |volume=66 |issue=5 |pages=653–664 |date=February 2018 |pmid=29028962 |pmc=5850449 |doi=10.1093/cid/cix860 |url=}}</ref><ref name="pmid29482893">{{cite journal |vauthors=Messacar K, Asturias EJ, Hixon AM, Van Leer-Buter C, Niesters HGM, Tyler KL, Abzug MJ, Dominguez SR |title=Enterovirus D68 and acute flaccid myelitis-evaluating the evidence for causality |journal=Lancet Infect Dis |volume=18 |issue=8 |pages=e239–e247 |date=August 2018 |pmid=29482893 |doi=10.1016/S1473-3099(18)30094-X |url=}}</ref><ref name="pmid30200066">{{cite journal |vauthors=Chen IJ, Hu SC, Hung KL, Lo CW |title=Acute flaccid myelitis associated with enterovirus D68 infection: A case report |journal=Medicine (Baltimore) |volume=97 |issue=36 |pages=e11831 |date=September 2018 |pmid=30200066 |pmc=6133480 |doi=10.1097/MD.0000000000011831 |url=}}</ref><ref name="urlBotulism | Botulism | CDC">{{cite web |url=https://www.cdc.gov/botulism/index.html |title=Botulism &#124; Botulism &#124; CDC |format= |work= |accessdate=}}</ref><ref name="pmid3290234">{{cite journal |vauthors=McCroskey LM, Hatheway CL |title=Laboratory findings in four cases of adult botulism suggest colonization of the intestinal tract |journal=J. Clin. Microbiol. |volume=26 |issue=5 |pages=1052–4 |date=May 1988 |pmid=3290234 |pmc=266519 |doi= |url=}}</ref><ref name="pmid16614251">{{cite journal |vauthors=Lindström M, Korkeala H |title=Laboratory diagnostics of botulism |journal=Clin. Microbiol. Rev. |volume=19 |issue=2 |pages=298–314 |date=April 2006 |pmid=16614251 |pmc=1471988 |doi=10.1128/CMR.19.2.298-314.2006 |url=}}</ref><ref name="pmid17224901">{{cite journal |vauthors=Brook I |title=Botulism: the challenge of diagnosis and treatment |journal=Rev Neurol Dis |volume=3 |issue=4 |pages=182–9 |date=2006 |pmid=17224901 |doi= |url=}}</ref><ref name="pmid23642721">{{cite journal |vauthors=Dimachkie MM, Barohn RJ |title=Guillain-Barré syndrome and variants |journal=Neurol Clin |volume=31 |issue=2 |pages=491–510 |date=May 2013 |pmid=23642721 |pmc=3939842 |doi=10.1016/j.ncl.2013.01.005 |url=}}</ref><ref name="pmid23418763">{{cite journal |vauthors=Walling AD, Dickson G |title=Guillain-Barré syndrome |journal=Am Fam Physician |volume=87 |issue=3 |pages=191–7 |date=February 2013 |pmid=23418763 |doi= |url=}}</ref><ref name="pmid21969911">{{cite journal |vauthors=Gilhus NE |title=Lambert-eaton myasthenic syndrome; pathogenesis, diagnosis, and therapy |journal=Autoimmune Dis |volume=2011 |issue= |pages=973808 |date=2011 |pmid=21969911 |pmc=3182560 |doi=10.4061/2011/973808 |url=}}</ref><ref name="pmid14977560">{{cite journal |vauthors=Krishnan C, Kaplin AI, Deshpande DM, Pardo CA, Kerr DA |title=Transverse Myelitis: pathogenesis, diagnosis and treatment |journal=Front. Biosci. |volume=9 |issue= |pages=1483–99 |date=May 2004 |pmid=14977560 |doi= |url=}}</ref><ref name="pmid24305450">{{cite journal |vauthors=Amato AA, Greenberg SA |title=Inflammatory myopathies |journal=Continuum (Minneap Minn) |volume=19 |issue=6 Muscle Disease |pages=1615–33 |date=December 2013 |pmid=24305450 |doi=10.1212/01.CON.0000440662.26427.bd |url=}}</ref><ref name="pmid24365430">{{cite journal |vauthors=Berger JR, Dean D |title=Neurosyphilis |journal=Handb Clin Neurol |volume=121 |issue= |pages=1461–72 |date=2014 |pmid=24365430 |doi=10.1016/B978-0-7020-4088-7.00098-5 |url=}}</ref>
{|
|- style="background: #4479BA; color: #FFFFFF; text-align: center;"
! rowspan="2" |<small>Diseases</small>
! colspan="8" |<small>History and Physical
! colspan="2" |<small>Diagnostic tests</small>
! rowspan="2" |<small>Other Findings</small>
|- style="background: #4479BA; color: #FFFFFF; text-align: center;"
!<small>Motor Deficit</small>
!<small>Sensory deficit</small>
!<small>Cranial nerve Involvement</small>
!<small>Autonomic dysfunction</small>
!<small>Proximal/Distal/Generalized</small>
!<small>Ascending/Descending/Systemic</small>
!<small>Unilateral (UL)
or Bilateral (BL)
or
No Lateralization (NL)</small>
!<small>Onset</small>
!<small>Lab or Imaging Findings</small>
!<small>Specific  test</small>
|-
| style="background: #DCDCDC; padding: 5px; text-align: center;" |Acute Flaccid Myelitis
| style="background: #DCDCDC; padding: 5px; text-align: center;" | +
| style="background: #DCDCDC; padding: 5px; text-align: center;" | +
| style="background: #DCDCDC; padding: 5px; text-align: center;" | +
| style="background: #DCDCDC; padding: 5px; text-align: center;" | -
| style="background: #DCDCDC; padding: 5px; text-align: center;" |Proximal > Distal
| style="background: #DCDCDC; padding: 5px; text-align: center;" |Ascending
| style="background: #DCDCDC; padding: 5px; text-align: center;" |UL/BL
| style="background: #DCDCDC; padding: 5px; text-align: center;" |Sudden
| style="background: #DCDCDC; padding: 5px; text-align: center;" |MRI (Longitudinal hyperintense lesions)
| style="background: #DCDCDC; padding: 5px; text-align: center;" |MRI and CSF PCR for viral etiology
| style="background: #DCDCDC; padding: 5px; text-align: center;" |Drooping eyelids
Difficulty swallowing
Respiratory failure
|-
| style="background: #DCDCDC; padding: 5px; text-align: center;" | Adult Botulism
| style="background: #F5F5F5; padding: 5px; text-align:center" | +
| style="background: #F5F5F5; padding: 5px; text-align:center" | -
| style="background: #F5F5F5; padding: 5px; text-align:center" | +
| style="background: #F5F5F5; padding: 5px; text-align:center" |<nowiki>+</nowiki>
| style="background: #F5F5F5; padding: 5px; text-align:center" |Generalized
| style="background: #F5F5F5; padding: 5px; text-align:center" |Descending
| style="background: #F5F5F5; padding: 5px; text-align:center" |BL
| style="background: #F5F5F5; padding: 5px; text-align:center" |Sudden
| style="background: #F5F5F5; padding: 5px; text-align:center" |Toxin test
| style="background: #F5F5F5; padding: 5px; text-align:center" |Blood, Wound, or Stool culture
| style="background: #F5F5F5; padding: 5px; text-align:center" |[[Diplopia]], [[Hyporeflexia|Hyporeflexia,]] [[Hypotonia]], possible respiratory paralysis
|-
| style="background: #DCDCDC; padding: 5px; text-align: center;" |Infant Botulism
| style="background: #F5F5F5; padding: 5px; text-align:center" | +
| style="background: #F5F5F5; padding: 5px; text-align:center" | -
| style="background: #F5F5F5; padding: 5px; text-align:center" | +
| style="background: #F5F5F5; padding: 5px; text-align:center" |<nowiki>+</nowiki>
| style="background: #F5F5F5; padding: 5px; text-align:center" |Generalized
| style="background: #F5F5F5; padding: 5px; text-align:center" |Descending
| style="background: #F5F5F5; padding: 5px; text-align:center" |BL
| style="background: #F5F5F5; padding: 5px; text-align:center" |Sudden
| style="background: #F5F5F5; padding: 5px; text-align:center" |Toxin test
| style="background: #F5F5F5; padding: 5px; text-align:center" |Blood, Wound, or Stool culture
| style="background: #F5F5F5; padding: 5px; text-align:center" |[[Flaccid paralysis]] ([[Floppy baby syndrome]]), possible respiratory paralysis
|-
| style="background: #DCDCDC; padding: 5px; text-align: center;" | [[Guillian-Barre syndrome]]
| style="background: #F5F5F5; padding: 5px; text-align:center" | +
| style="background: #F5F5F5; padding: 5px; text-align:center" | -
| style="background: #F5F5F5; padding: 5px; text-align:center" | -
| style="background: #F5F5F5; padding: 5px; text-align:center" |<nowiki>-</nowiki>
| style="background: #F5F5F5; padding: 5px; text-align:center" |Generalized
| style="background: #F5F5F5; padding: 5px; text-align:center" |Ascending
| style="background: #F5F5F5; padding: 5px; text-align:center" |BL
| style="background: #F5F5F5; padding: 5px; text-align:center" |Insidious
| style="background: #F5F5F5; padding: 5px; text-align:center" |CSF: ↑Protein
↓Cells
| style="background: #F5F5F5; padding: 5px; text-align:center" |Clinical & Lumbar Puncture
| style="background: #F5F5F5; padding: 5px; text-align:center" |Progressive [[ascending paralysis]] following infection, possible respiratory paralysis
|-
| style="background: #DCDCDC; padding: 5px; text-align: center;" | [[Eaton lambert syndrome|Eaton Lambert syndrome]]
| style="background: #F5F5F5; padding: 5px; text-align:center" | +
| style="background: #F5F5F5; padding: 5px; text-align:center" | -
| style="background: #F5F5F5; padding: 5px; text-align:center" | +
| style="background: #F5F5F5; padding: 5px; text-align:center" |<nowiki>+</nowiki>
| style="background: #F5F5F5; padding: 5px; text-align:center" |Generalized
| style="background: #F5F5F5; padding: 5px; text-align:center" |Systemic
| style="background: #F5F5F5; padding: 5px; text-align:center" |BL
| style="background: #F5F5F5; padding: 5px; text-align:center" |Intermittent
| style="background: #F5F5F5; padding: 5px; text-align:center" | [[EMG]], repetitive nerve stimulation test (RNS)
| style="background: #F5F5F5; padding: 5px; text-align:center" |[[Voltage gated calcium channel|Voltage gated calcium channe]]<nowiki/>l<nowiki/> (VGCC) antibody
| style="background: #F5F5F5; padding: 5px; text-align:center" |[[Diplopia]], [[ptosis]], improves with movement (as the day progresses)
|-
| style="background: #DCDCDC; padding: 5px; text-align: center;" |[[Myasthenia gravis]]
| style="background: #F5F5F5; padding: 5px; text-align:center" | +
| style="background: #F5F5F5; padding: 5px; text-align:center" | -
| style="background: #F5F5F5; padding: 5px; text-align:center" | +
| style="background: #F5F5F5; padding: 5px; text-align:center" |<nowiki>+</nowiki>
| style="background: #F5F5F5; padding: 5px; text-align:center" |Generalized
| style="background: #F5F5F5; padding: 5px; text-align:center" |Systemic
| style="background: #F5F5F5; padding: 5px; text-align:center" |BL
| style="background: #F5F5F5; padding: 5px; text-align:center" |Intermittent
| style="background: #F5F5F5; padding: 5px; text-align:center" | [[Electromyography|EMG]], [[Edrophonium|Edrophonium test]]
| style="background: #F5F5F5; padding: 5px; text-align:center" |[[Acetylcholine receptor|Ach receptor]] antibody
| style="background: #F5F5F5; padding: 5px; text-align:center" |[[Diplopia]], [[ptosis]], worsening with movement (as the day progresses)
|-
| style="background: #DCDCDC; padding: 5px; text-align: center;" |[[Electrolyte disturbance]]
| style="background: #F5F5F5; padding: 5px; text-align:center" | +
| style="background: #F5F5F5; padding: 5px; text-align:center" | +
| style="background: #F5F5F5; padding: 5px; text-align:center" | -
| style="background: #F5F5F5; padding: 5px; text-align:center" |<nowiki>-</nowiki>
| style="background: #F5F5F5; padding: 5px; text-align:center" |Generalized
| style="background: #F5F5F5; padding: 5px; text-align:center" |Systemic
| style="background: #F5F5F5; padding: 5px; text-align:center" |BL
| style="background: #F5F5F5; padding: 5px; text-align:center" |Insidious
| style="background: #F5F5F5; padding: 5px; text-align:center" | Electrolyte panel
| style="background: #F5F5F5; padding: 5px; text-align:center" |↓Ca++, ↓Mg++, ↓K+
| style="background: #F5F5F5; padding: 5px; text-align:center" |Possible [[arrhythmia]]
|-
| style="background: #DCDCDC; padding: 5px; text-align: center;" |[[Organophosphate poisoning|Organophosphate toxicity]]
| style="background: #F5F5F5; padding: 5px; text-align:center" | +
| style="background: #F5F5F5; padding: 5px; text-align:center" | +
| style="background: #F5F5F5; padding: 5px; text-align:center" | -
| style="background: #F5F5F5; padding: 5px; text-align:center" |<nowiki>+</nowiki>
| style="background: #F5F5F5; padding: 5px; text-align:center" |Generalized
| style="background: #F5F5F5; padding: 5px; text-align:center" |Ascending
| style="background: #F5F5F5; padding: 5px; text-align:center" |BL
| style="background: #F5F5F5; padding: 5px; text-align:center" |Sudden
| style="background: #F5F5F5; padding: 5px; text-align:center" | Clinical diagnosis: physical exam & history
| style="background: #F5F5F5; padding: 5px; text-align:center" |Clinical suspicion confirmed with RBC AchE activity
| style="background: #F5F5F5; padding: 5px; text-align:center" |History of exposure to i[[Insecticide|nsecticide]] or living in farming environment. with : [[Diarrhea]], [[Urination]], [[Miosis]], [[Bradycardia]], [[Lacrimation]], [[Emesis]], [[Salivation]], [[Sweating]]
|-
| style="background: #DCDCDC; padding: 5px; text-align: center;" |[[Tick paralysis]] ([[Dermacentor andersoni|Dermacentor tick]])
| style="background: #F5F5F5; padding: 5px; text-align:center" | +
| style="background: #F5F5F5; padding: 5px; text-align:center" | -
| style="background: #F5F5F5; padding: 5px; text-align:center" | -
| style="background: #F5F5F5; padding: 5px; text-align:center" |<nowiki>-</nowiki>
| style="background: #F5F5F5; padding: 5px; text-align:center" |Generalized
| style="background: #F5F5F5; padding: 5px; text-align:center" |Ascending
| style="background: #F5F5F5; padding: 5px; text-align:center" |BL
| style="background: #F5F5F5; padding: 5px; text-align:center" |Insidious
| style="background: #F5F5F5; padding: 5px; text-align:center" | Clinical diagnosis: physical exam & history
| style="background: #F5F5F5; padding: 5px; text-align:center" | -
| style="background: #F5F5F5; padding: 5px; text-align:center" |History of outdoor activity in Northeastern United States. The tick is often still latched to the patient at presentation (often in head and neck area)
|-
| style="background: #DCDCDC; padding: 5px; text-align: center;" |[[Tetrodotoxin]] poisoning
| style="background: #F5F5F5; padding: 5px; text-align:center" | +
| style="background: #F5F5F5; padding: 5px; text-align:center" | -
| style="background: #F5F5F5; padding: 5px; text-align:center" | +
| style="background: #F5F5F5; padding: 5px; text-align:center" |<nowiki>+</nowiki>
| style="background: #F5F5F5; padding: 5px; text-align:center" |Generalized
| style="background: #F5F5F5; padding: 5px; text-align:center" |Systemic
| style="background: #F5F5F5; padding: 5px; text-align:center" |BL
| style="background: #F5F5F5; padding: 5px; text-align:center" |Sudden
| style="background: #F5F5F5; padding: 5px; text-align:center" | Clinical diagnosis: physical exam & dietary history
| style="background: #F5F5F5; padding: 5px; text-align:center" | -
| style="background: #F5F5F5; padding: 5px; text-align:center" | History of consumption of puffer fish species.
|-
| style="background: #DCDCDC; padding: 5px; text-align: center;" |[[Stroke]]
| style="background: #F5F5F5; padding: 5px; text-align:center" | +/-
| style="background: #F5F5F5; padding: 5px; text-align:center" | +/-
| style="background: #F5F5F5; padding: 5px; text-align:center" | +/-
| style="background: #F5F5F5; padding: 5px; text-align:center" |<nowiki>+/-</nowiki>
| style="background: #F5F5F5; padding: 5px; text-align:center" |Generalized
| style="background: #F5F5F5; padding: 5px; text-align:center" |Systemic
| style="background: #F5F5F5; padding: 5px; text-align:center" |UL
| style="background: #F5F5F5; padding: 5px; text-align:center" |Sudden
| style="background: #F5F5F5; padding: 5px; text-align:center" | MRI +ve for ischemia or hemorrhage
| style="background: #F5F5F5; padding: 5px; text-align:center" |MRI
| style="background: #F5F5F5; padding: 5px; text-align:center" |Sudden unilateral motor and sensory deficit in a patient with a history of [[Atherosclerosis|atherosclero]]<nowiki/>tic risk factors (diabetes, hypertension, smoking) or [[Atrial fibrillation|atrial fibrillation.]]
|-
| style="background: #DCDCDC; padding: 5px; text-align:center;" | [[Poliomyelitis]]
| style="background: #F5F5F5; padding: 5px; text-align:center" | +
| style="background: #F5F5F5; padding: 5px; text-align:center" | +
| style="background: #F5F5F5; padding: 5px; text-align:center" | +
| style="background: #F5F5F5; padding: 5px; text-align:center" | +/-
| style="background: #F5F5F5; padding: 5px; text-align:center" |Proximal > Distal
| style="background: #F5F5F5; padding: 5px; text-align:center" |Systemic
| style="background: #F5F5F5; padding: 5px; text-align:center" |BL or UL
| style="background: #F5F5F5; padding: 5px; text-align:center" |Sudden
| style="background: #F5F5F5; padding: 5px; text-align:center" |
| style="background: #F5F5F5; padding: 5px; text-align:center" |PCR of CSF
| style="background: #F5F5F5; padding: 5px; text-align:center" |Asymmetric paralysis following a flu-like syndrome.
|-
| style="background: #DCDCDC; padding: 5px; text-align:center;" | [[Transverse myelitis]]
| style="background: #F5F5F5; padding: 5px; text-align:center" | +
| style="background: #F5F5F5; padding: 5px; text-align:center" | +
| style="background: #F5F5F5; padding: 5px; text-align:center" | +
| style="background: #F5F5F5; padding: 5px; text-align:center" |<nowiki>+</nowiki>
| style="background: #F5F5F5; padding: 5px; text-align:center" |Proximal > Distal
| style="background: #F5F5F5; padding: 5px; text-align:center" |Systemic
| style="background: #F5F5F5; padding: 5px; text-align:center" |BL or UL
| style="background: #F5F5F5; padding: 5px; text-align:center" |Sudden
| style="background: #F5F5F5; padding: 5px; text-align:center" |MRI & [[Lumbar puncture]]
| style="background: #F5F5F5; padding: 5px; text-align:center" |MRI
| style="background: #F5F5F5; padding: 5px; text-align:center" |History of chronic viral or autoimmune disease (e.g. [[HIV]])
|-
| style="background: #DCDCDC; padding: 5px; text-align: center;" |[[Neurosyphilis]]
| style="background: #F5F5F5; padding: 5px; text-align:center" | +
| style="background: #F5F5F5; padding: 5px; text-align:center" | +
| style="background: #F5F5F5; padding: 5px; text-align:center" | -
| style="background: #F5F5F5; padding: 5px; text-align:center" | +/-
| style="background: #F5F5F5; padding: 5px; text-align:center" |Generalized
| style="background: #F5F5F5; padding: 5px; text-align:center" |Systemic
| style="background: #F5F5F5; padding: 5px; text-align:center" |BL
| style="background: #F5F5F5; padding: 5px; text-align:center" |Insidious<nowiki/>
| style="background: #F5F5F5; padding: 5px; text-align:center" |MRI & [[Lumbar puncture]]
| style="background: #F5F5F5; padding: 5px; text-align:center" |CSF [[VDRL]]-specifc
CSF [[FTA-ABS|FTA-Ab]] -sensitive
| style="background: #F5F5F5; padding: 5px; text-align:center" |History of unprotected sex or multiple sexual partners.
History of [[genital ulcer]] ([[chancre]]), diffuse [[Maculopapular rash|maculopapular ras]]<nowiki/>h.
|-
| style="background: #DCDCDC; padding: 5px; text-align:center;" |[[Muscular dystrophy]]
| style="background: #F5F5F5; padding: 5px; text-align:center" | +
| style="background: #F5F5F5; padding: 5px; text-align:center" | -
| style="background: #F5F5F5; padding: 5px; text-align:center" | -
| style="background: #F5F5F5; padding: 5px; text-align:center" |<nowiki>-</nowiki>
| style="background: #F5F5F5; padding: 5px; text-align:center" |Proximal > Distal
| style="background: #F5F5F5; padding: 5px; text-align:center" |Systemic
| style="background: #F5F5F5; padding: 5px; text-align:center" |BL
| style="background: #F5F5F5; padding: 5px; text-align:center" |Insidious
| style="background: #F5F5F5; padding: 5px; text-align:center" | Genetic testing
| style="background: #F5F5F5; padding: 5px; text-align:center" |[[Muscle biopsy]]
| style="background: #F5F5F5; padding: 5px; text-align:center" |Progressive proximal lower limb weakness with calf pseudohypertrophy in early childhood. [[Gowers' sign|Gower sign]] positive.
|-
| style="background: #DCDCDC; padding: 5px; text-align: center;" |[[Multiple sclerosis]] exacerbation
| style="background: #F5F5F5; padding: 5px; text-align:center" | +
| style="background: #F5F5F5; padding: 5px; text-align:center" | +
| style="background: #F5F5F5; padding: 5px; text-align:center" | +
| style="background: #F5F5F5; padding: 5px; text-align:center" |<nowiki>+</nowiki>
| style="background: #F5F5F5; padding: 5px; text-align:center" |Generalized
| style="background: #F5F5F5; padding: 5px; text-align:center" |Systemic
| style="background: #F5F5F5; padding: 5px; text-align:center" |NL
| style="background: #F5F5F5; padding: 5px; text-align:center" |Sudden
| style="background: #F5F5F5; padding: 5px; text-align:center" |'''[[CSF|↑]]'''[[CSF]] [[IgG]] levels
(monoclonal)
| style="background: #F5F5F5; padding: 5px; text-align:center" |Clinical assessment and [[MRI]]
| style="background: #F5F5F5; padding: 5px; text-align:center" |[[Blurred vision|Blurry vision]], [[urinary incontinence]], [[fatigue]]
|-
| style="background: #DCDCDC; padding: 5px; text-align:center" |[[Amyotrophic lateral sclerosis]]
| style="background: #F5F5F5; padding: 5px; text-align:center" | +
| style="background: #F5F5F5; padding: 5px; text-align:center" | -
| style="background: #F5F5F5; padding: 5px; text-align:center" | -
| style="background: #F5F5F5; padding: 5px; text-align:center" |<nowiki>-</nowiki>
| style="background: #F5F5F5; padding: 5px; text-align:center" |Generalized
| style="background: #F5F5F5; padding: 5px; text-align:center" |Systemic
| style="background: #F5F5F5; padding: 5px; text-align:center" |BL
| style="background: #F5F5F5; padding: 5px; text-align:center" |Insidious
| style="background: #F5F5F5; padding: 5px; text-align:center" | Normal [[Lumbar puncture|LP]] (to rule out DDx)
| style="background: #F5F5F5; padding: 5px; text-align:center" |MRI & [[Lumbar puncture|LP]]
| style="background: #F5F5F5; padding: 5px; text-align:center" |Patient initially presents with [[upper motor neuron]] deficit ([[spasticity]]) followed by [[lower motor neuron]] deficit ([[flaccidity]]).
|-
| style="background: #DCDCDC; padding: 5px; text-align:center;" | [[Myositis|Inflammatory myopathy]]
| style="background: #F5F5F5; padding: 5px; text-align:center" | +
| style="background: #F5F5F5; padding: 5px; text-align:center" | -
| style="background: #F5F5F5; padding: 5px; text-align:center" | -
| style="background: #F5F5F5; padding: 5px; text-align:center" |<nowiki>-</nowiki>
| style="background: #F5F5F5; padding: 5px; text-align:center" |Proximal > Distal
| style="background: #F5F5F5; padding: 5px; text-align:center" |Systemic
| style="background: #F5F5F5; padding: 5px; text-align:center" |UL or BL
| style="background: #F5F5F5; padding: 5px; text-align:center" |Insidious
| style="background: #F5F5F5; padding: 5px; text-align:center" |Elevated [[Creatine kinase|CK]] & [[Aldolase]]
| style="background: #F5F5F5; padding: 5px; text-align:center" |[[Muscle biopsy]]
| style="background: #F5F5F5; padding: 5px; text-align:center" |Progressive proximal muscle weakness in 3rd to 5th decade of life. With or without skin manifestations.
|-
|}
*Stroke associated with [[COVID-19]] should be differentiated from other diseases that can have similar presentation as [[stroke]]. These include-<ref>{{cite journal|doi=10.22088/cjim.8.3.213}}</ref><ref name="DawsonCloud2016">{{cite journal|last1=Dawson|first1=Ang|last2=Cloud|first2=Geoffrey C|last3=Pereira|first3=Anthony C|last4=Moynihan|first4=Barry J|title=Stroke mimic diagnoses presenting to a hyperacute stroke unit|journal=Clinical Medicine|volume=16|issue=5|year=2016|pages=423–426|issn=1470-2118|doi=10.7861/clinmedicine.16-5-423}}</ref>
**Other [[COVID-19]] associated neurological complications: [[Encephalitis]], [[Encephalopathy]], [[Meningitis]], [[Seizure]], [[Guillain-Barre syndrome]], [[polyneuritis cranialis]]
**Neurologic in non-COVID patients: [[Transient Ischemic Attack]], [[Brain abscess]], Hemiplegic [[Migraine]], [[Seizures]]<ref name="pmid113850432">{{cite journal| author=Manford M| title=Assessment and investigation of possible epileptic seizures. | journal=J Neurol Neurosurg Psychiatry | year= 2001 | volume= 70 Suppl 2 | issue=  | pages= II3-8 | pmid=11385043 | doi= | pmc=1765557 | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=11385043  }}</ref>, [[Postictal paralysis]], [[Cerebral venous sinus thrombosis]], [[Cerebral neoplasm]]<ref name="pmid105826682">{{cite journal| author=Morgenstern LB, Frankowski RF| title=Brain tumor masquerading as stroke. | journal=J Neurooncol | year= 1999 | volume= 44 | issue= 1 | pages= 47-52 | pmid=10582668 | doi= | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=10582668  }}</ref><ref name="pmid213713272">{{cite journal| author=Weston CL, Glantz MJ, Connor JR| title=Detection of cancer cells in the cerebrospinal fluid: current methods and future directions. | journal=Fluids Barriers CNS | year= 2011 | volume= 8 | issue= 1 | pages= 14 | pmid=21371327 | doi=10.1186/2045-8118-8-14 | pmc=3059292 | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=21371327  }}</ref>, Cerebral Infections ([[Meningitis]], [[Encephalitis]]<ref name="pmid193982862">{{cite journal| author=Carbonnelle E| title=[Laboratory diagnosis of bacterial meningitis: usefulness of various tests for the determination of the etiological agent]. | journal=Med Mal Infect | year= 2009 | volume= 39 | issue= 7-8 | pages= 581-605 | pmid=19398286 | doi=10.1016/j.medmal.2009.02.017 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=19398286  }}</ref>, [[Brain Abscess]], [[Progressive multifocal leukoencephalopathy]])
**Traumatic: [[Epidural hematoma]], [[Subdural hematoma]], [[Traumatic brain Injury]]
**Toxic and/or Metabolic: [[Hypoglycemia]], [[Hyponatremia]], [[Drug intoxication]]
**[[Syncope]]
**[[Lyme's disease]]<ref name="AlmoussaGoertzen2015">{{cite journal|last1=Almoussa|first1=Mohamad|last2=Goertzen|first2=Angelika|last3=Fauser|first3=Barbara|last4=Zimmermann|first4=Christoph W.|title=Stroke as an Unusual First Presentation of Lyme Disease|journal=Case Reports in Neurological Medicine|volume=2015|year=2015|pages=1–4|issn=2090-6668|doi=10.1155/2015/389081}}</ref>
**Ear and Nose diseases<ref name="KerberBrown2006">{{cite journal|last1=Kerber|first1=Kevin A.|last2=Brown|first2=Devin L.|last3=Lisabeth|first3=Lynda D.|last4=Smith|first4=Melinda A.|last5=Morgenstern|first5=Lewis B.|title=Stroke Among Patients With Dizziness, Vertigo, and Imbalance in the Emergency Department|journal=Stroke|volume=37|issue=10|year=2006|pages=2484–2487|issn=0039-2499|doi=10.1161/01.STR.0000240329.48263.0d}}</ref>: [[Benign Paroxysmal Positional Vertigo]], [[Vestibular Neuronitis]], [[Meniere's Disease]]
**Psychiatric: [[Malingering]], [[Conversion disorder]]
**Paraneoplastic syndromes
**Autoimmune disorders: [[Multiple Sclerosis]]<ref name="pmid82741112">{{cite journal| author=Giang DW, Grow VM, Mooney C, Mushlin AI, Goodman AD, Mattson DH et al.| title=Clinical diagnosis of multiple sclerosis. The impact of magnetic resonance imaging and ancillary testing. Rochester-Toronto Magnetic Resonance Study Group. | journal=Arch Neurol | year= 1994 | volume= 51 | issue= 1 | pages= 61-6 | pmid=8274111 | doi= | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=8274111  }}</ref>, [[Acute inflammatory demyelinating polyradiculoneuropathy]]([[Guillain-Barre syndrome]])<ref name="de MontaudouinFleury2014">{{cite journal|last1=de Montaudouin|first1=M.|last2=Fleury|first2=O.|last3=Rouanet|first3=M.|last4=Renou|first4=P.|last5=Rouanet|first5=F.|last6=Sibon|first6=Igor|title=Hyperacute Guillain-Barré syndrome mimicking stroke: report of 3 cases|journal=The American Journal of Emergency Medicine|volume=32|issue=9|year=2014|pages=1152.e3–1152.e5|issn=07356757|doi=10.1016/j.ajem.2014.02.019}}</ref>
*Stroke in COVID-19 positive patients vs. Stroke in non-COVID-19 patients: A retrospective cohort study (15th March,2020 to 19th April,2020) conducted by Yaghi et. al. in hospitalized patients in New York Healthcare systems compared stroke characteristics in patients with and without COVID-19<ref name="YaghiIshida2020">{{cite journal|last1=Yaghi|first1=Shadi|last2=Ishida|first2=Koto|last3=Torres|first3=Jose|last4=Mac Grory|first4=Brian|last5=Raz|first5=Eytan|last6=Humbert|first6=Kelley|last7=Henninger|first7=Nils|last8=Trivedi|first8=Tushar|last9=Lillemoe|first9=Kaitlyn|last10=Alam|first10=Shazia|last11=Sanger|first11=Matthew|last12=Kim|first12=Sun|last13=Scher|first13=Erica|last14=Dehkharghani|first14=Seena|last15=Wachs|first15=Michael|last16=Tanweer|first16=Omar|last17=Volpicelli|first17=Frank|last18=Bosworth|first18=Brian|last19=Lord|first19=Aaron|last20=Frontera|first20=Jennifer|title=SARS-CoV-2 and Stroke in a New York Healthcare System|journal=Stroke|volume=51|issue=7|year=2020|pages=2002–2011|issn=0039-2499|doi=10.1161/STROKEAHA.120.030335}}</ref>. This study included 3,556 COVID-19 positive patients, out of which 32 patients were diagnosed with ischemic stroke based on imaging. These COVID-19 positive stroke patients were then compared with 46 hospitalized stroke patients without COVID-19. Based on findings of this study-
**Younger patient population (average age-63 years) as compared to relatively older patient population (average age-70 years) in non-COVID-19 patients.
**Severe stroke (National Institutes of Health Stroke Scale- average score 19) as compared to non-COVID patients with lesser average score (8) seen on National Institutes of Health Stroke Scale
**Higher D-dimer levels which point towards severe blood clotting (10,000 in this study). Relatively lower D-dimer levels (525 in this study) were seen in non-COVID patients.
**Mostly Cryptogenic stroke seen in COVID-19 patients.
**Increased mortality seen in COVID-19 patients.
**Most of COVID-19 patients did not have any history of prior stroke (only 3.1% reported stroke history) as opposed to non-COVID patient group in which prior history of stroke was reported in 13%.
**Non-COVID patients  were more likely to have higher blood pressure levels.
Further studies are going on to understand the clinical characteristics specific to stroke in COVID-19 patients. It has been observed that the findings vary in different countries possibly due to racial/ethnicity variations. Since strokes have been reported in critically ill COVID-19 patients, hence, it is difficult to diagnose stroke in intubated and sedated COVID-19 patients.
*Stroke in COVID-19 positive patients vs. Stroke in Influenza patients: Out of 1916 [[COVID-19]] patients (Emergency Department visits or were hospitalized with [[COVID-19]]) in retrospective cohort study which included patients from two academic hospitals in New York, 31 patients (1.6%) with median age 69 years, experienced acute ischemic stroke. The majority of these patients were men (58%). 8 patients (26%] had initial presentation as stroke while 23 had stroke over the course of the disease after testing positive for [[COVID-19]].


Based on this study, the COVID-19 patients have much higher incidence of stroke when compared to influenza patients.<ref name="MerklerParikh2020">{{cite journal|last1=Merkler|first1=Alexander E.|last2=Parikh|first2=Neal S.|last3=Mir|first3=Saad|last4=Gupta|first4=Ajay|last5=Kamel|first5=Hooman|last6=Lin|first6=Eaton|last7=Lantos|first7=Joshua|last8=Schenck|first8=Edward J.|last9=Goyal|first9=Parag|last10=Bruce|first10=Samuel S.|last11=Kahan|first11=Joshua|last12=Lansdale|first12=Kelsey N.|last13=LeMoss|first13=Natalie M.|last14=Murthy|first14=Santosh B.|last15=Stieg|first15=Philip E.|last16=Fink|first16=Matthew E.|last17=Iadecola|first17=Costantino|last18=Segal|first18=Alan Z.|last19=Cusick|first19=Marika|last20=Campion|first20=Thomas R.|last21=Diaz|first21=Ivan|last22=Zhang|first22=Cenai|last23=Navi|first23=Babak B.|title=Risk of Ischemic Stroke in Patients With Coronavirus Disease 2019 (COVID-19) vs Patients With Influenza|journal=JAMA Neurology|year=2020|issn=2168-6149|doi=10.1001/jamaneurol.2020.2730}}</ref>
*For further information about the differential diagnosis, [[COVID-19-associated stroke differential diagnosis|click here]].
*To view the differential diagnosis of COVID-19, [[COVID-19 differential diagnosis|click here]].


==Epidemiology and Demographics==
==Epidemiology and Demographics==


*The case fatality rate of cerebrovascular accidents is 41.7 deaths per 100, 000 population<ref name="pmid26673558">{{cite journal| author=Writing Group Members. Mozaffarian D, Benjamin EJ, Go AS, Arnett DK, Blaha MJ et al.| title=Heart Disease and Stroke Statistics-2016 Update: A Report From the American Heart Association. | journal=Circulation | year= 2016 | volume= 133 | issue= 4 | pages= e38-360 | pmid=26673558 | doi=10.1161/CIR.0000000000000350 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=26673558  }} </ref>. The mortality in patients with COVID-19 associated stroke is higher.<ref name="YaghiIshida2020">{{cite journal|last1=Yaghi|first1=Shadi|last2=Ishida|first2=Koto|last3=Torres|first3=Jose|last4=Mac Grory|first4=Brian|last5=Raz|first5=Eytan|last6=Humbert|first6=Kelley|last7=Henninger|first7=Nils|last8=Trivedi|first8=Tushar|last9=Lillemoe|first9=Kaitlyn|last10=Alam|first10=Shazia|last11=Sanger|first11=Matthew|last12=Kim|first12=Sun|last13=Scher|first13=Erica|last14=Dehkharghani|first14=Seena|last15=Wachs|first15=Michael|last16=Tanweer|first16=Omar|last17=Volpicelli|first17=Frank|last18=Bosworth|first18=Brian|last19=Lord|first19=Aaron|last20=Frontera|first20=Jennifer|title=SARS-CoV-2 and Stroke in a New York Healthcare System|journal=Stroke|volume=51|issue=7|year=2020|pages=2002–2011|issn=0039-2499|doi=10.1161/STROKEAHA.120.030335}}</ref>
*The [[case fatality rate]] of [[Cerebrovascular accident|cerebrovascular accidents]] is 41.7 deaths per 100, 000 population<ref name="pmid26673558">{{cite journal| author=Writing Group Members. Mozaffarian D, Benjamin EJ, Go AS, Arnett DK, Blaha MJ et al.| title=Heart Disease and Stroke Statistics-2016 Update: A Report From the American Heart Association. | journal=Circulation | year= 2016 | volume= 133 | issue= 4 | pages= e38-360 | pmid=26673558 | doi=10.1161/CIR.0000000000000350 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=26673558  }}</ref>. The [[Mortality rate|mortality]] in patients with [[COVID-19]] associated [[stroke]] is higher.<ref name="YaghiIshida20202" />


*The incidence of stroke in COVID-19 varies significantly depending on the study population.<ref name="AggarwalLippi2020">{{cite journal|last1=Aggarwal|first1=Gaurav|last2=Lippi|first2=Giuseppe|last3=Michael Henry|first3=Brandon|title=Cerebrovascular disease is associated with an increased disease severity in patients with Coronavirus Disease 2019 (COVID-19): A pooled analysis of published literature|journal=International Journal of Stroke|volume=15|issue=4|year=2020|pages=385–389|issn=1747-4930|doi=10.1177/1747493020921664}}</ref> The [[prevalence]] of [[COVID-19]]-associated [[stroke]] varies in different studies ('''Table 1''').
*The [[incidence]] of [[stroke]] in [[COVID-19]] varies significantly depending on the study population.<ref name="AggarwalLippi2020">{{cite journal|last1=Aggarwal|first1=Gaurav|last2=Lippi|first2=Giuseppe|last3=Michael Henry|first3=Brandon|title=Cerebrovascular disease is associated with an increased disease severity in patients with Coronavirus Disease 2019 (COVID-19): A pooled analysis of published literature|journal=International Journal of Stroke|volume=15|issue=4|year=2020|pages=385–389|issn=1747-4930|doi=10.1177/1747493020921664}}</ref> The [[prevalence]] of [[COVID-19]]-associated [[stroke]] varies in different studies.


{| class="wikitable"
{| class="wikitable"
Line 463: Line 90:
|April 10, 2020
|April 10, 2020
|Wuhan, China
|Wuhan, China
|Mao et al.<ref name="MaoJin2020">{{cite journal|last1=Mao|first1=Ling|last2=Jin|first2=Huijuan|last3=Wang|first3=Mengdie|last4=Hu|first4=Yu|last5=Chen|first5=Shengcai|last6=He|first6=Quanwei|last7=Chang|first7=Jiang|last8=Hong|first8=Candong|last9=Zhou|first9=Yifan|last10=Wang|first10=David|last11=Miao|first11=Xiaoping|last12=Li|first12=Yanan|last13=Hu|first13=Bo|title=Neurologic Manifestations of Hospitalized Patients With Coronavirus Disease 2019 in Wuhan, China|journal=JAMA Neurology|volume=77|issue=6|year=2020|pages=683|issn=2168-6149|doi=10.1001/jamaneurol.2020.1127}}</ref>
|Mao et al.<ref name="MaoJin20202" />
|214
|214
|88 patients (41.1%), Mean age-58.2 years
|88 patients (41.1%), Mean age-58.2 years
|78 patients (36.4%)
|78 patients (36.4%)
|5 among severe [5.7%] infection group vs 1 [0.8%]) in non-severe group  
|5 among severe [5.7%] infection group vs 1 [0.8%]) in non-severe group
|Ischemic-4, Hemorrhagic-1
|Ischemic-4, Hemorrhagic-1
|-
|-
|May 29, 2020
|May 29, 2020
|Wuhan, China
|Wuhan, China
|Qin et al.<ref name="QinZhou2020">{{cite journal|last1=Qin|first1=Chuan|last2=Zhou|first2=Luoqi|last3=Hu|first3=Ziwei|last4=Yang|first4=Sheng|last5=Zhang|first5=Shuoqi|last6=Chen|first6=Man|last7=Yu|first7=Haihan|last8=Tian|first8=Dai-Shi|last9=Wang|first9=Wei|title=Clinical Characteristics and Outcomes of COVID-19 Patients With a History of Stroke in Wuhan, China|journal=Stroke|volume=51|issue=7|year=2020|pages=2219–2223|issn=0039-2499|doi=10.1161/STROKEAHA.120.030365}}</ref> (Retrospective cohort study)
| Qin et al.<ref name="QinZhou20202">{{cite journal|last1=Qin|first1=Chuan|last2=Zhou|first2=Luoqi|last3=Hu|first3=Ziwei|last4=Yang|first4=Sheng|last5=Zhang|first5=Shuoqi|last6=Chen|first6=Man|last7=Yu|first7=Haihan|last8=Tian|first8=Dai-Shi|last9=Wang|first9=Wei|title=Clinical Characteristics and Outcomes of COVID-19 Patients With a History of Stroke in Wuhan, China|journal=Stroke|volume=51|issue=7|year=2020|pages=2219–2223|issn=0039-2499|doi=10.1161/STROKEAHA.120.030365}}</ref> (Retrospective cohort study)
|1875
|1875
|461 severe on admission
|461 severe on admission
|
|
|50 patients ie. 15 among severe and 35 among mild on admission (Median age-70 years), 30 males and 20 females
|50 patients ie. 15 among severe and 35 among mild on admission (Median age-70 years), 30 males and 20 females
|Ischemic-90%, Hemorrhagic-10%
|Ischemic-90%, [[Hemorrhagic stroke|Hemorrhagic]]-10%
|-
|-
|May 20, 2020
|May 20, 2020
|New York
|New York
|Yaghi et al.<ref name="YaghiIshida2020">{{cite journal|last1=Yaghi|first1=Shadi|last2=Ishida|first2=Koto|last3=Torres|first3=Jose|last4=Mac Grory|first4=Brian|last5=Raz|first5=Eytan|last6=Humbert|first6=Kelley|last7=Henninger|first7=Nils|last8=Trivedi|first8=Tushar|last9=Lillemoe|first9=Kaitlyn|last10=Alam|first10=Shazia|last11=Sanger|first11=Matthew|last12=Kim|first12=Sun|last13=Scher|first13=Erica|last14=Dehkharghani|first14=Seena|last15=Wachs|first15=Michael|last16=Tanweer|first16=Omar|last17=Volpicelli|first17=Frank|last18=Bosworth|first18=Brian|last19=Lord|first19=Aaron|last20=Frontera|first20=Jennifer|title=SARS-CoV-2 and Stroke in a New York Healthcare System|journal=Stroke|volume=51|issue=7|year=2020|pages=2002–2011|issn=0039-2499|doi=10.1161/STROKEAHA.120.030335}}</ref> (Retrospective cohort study)
|Yaghi et al.<ref name="YaghiIshida20202" /> (Retrospective cohort study)
|3556
|3556
|
|
|Stroke at the time of admission-14/32 (43.8%), eventually developed stroke during hospitalization-18 (56.2%)
|[[Stroke]] at the time of admission-14/32 (43.8%), eventually developed stroke during hospitalization-18 (56.2%)
|32 patients (0.9%)
|32 patients (0.9%)
|Ischemic stroke- 32  
|Ischemic stroke- 32
|-
|-
|April 28, 2020
|April 28, 2020
|New York city
|New York city
|Oxley et al.<ref name="OxleyMocco2020">{{cite journal|last1=Oxley|first1=Thomas J.|last2=Mocco|first2=J.|last3=Majidi|first3=Shahram|last4=Kellner|first4=Christopher P.|last5=Shoirah|first5=Hazem|last6=Singh|first6=I. Paul|last7=De Leacy|first7=Reade A.|last8=Shigematsu|first8=Tomoyoshi|last9=Ladner|first9=Travis R.|last10=Yaeger|first10=Kurt A.|last11=Skliut|first11=Maryna|last12=Weinberger|first12=Jesse|last13=Dangayach|first13=Neha S.|last14=Bederson|first14=Joshua B.|last15=Tuhrim|first15=Stanley|last16=Fifi|first16=Johanna T.|title=Large-Vessel Stroke as a Presenting Feature of Covid-19 in the Young|journal=New England Journal of Medicine|volume=382|issue=20|year=2020|pages=e60|issn=0028-4793|doi=10.1056/NEJMc2009787}}</ref>
| Oxley et al.<ref name="OxleyMocco2020">{{cite journal|last1=Oxley|first1=Thomas J.|last2=Mocco|first2=J.|last3=Majidi|first3=Shahram|last4=Kellner|first4=Christopher P.|last5=Shoirah|first5=Hazem|last6=Singh|first6=I. Paul|last7=De Leacy|first7=Reade A.|last8=Shigematsu|first8=Tomoyoshi|last9=Ladner|first9=Travis R.|last10=Yaeger|first10=Kurt A.|last11=Skliut|first11=Maryna|last12=Weinberger|first12=Jesse|last13=Dangayach|first13=Neha S.|last14=Bederson|first14=Joshua B.|last15=Tuhrim|first15=Stanley|last16=Fifi|first16=Johanna T.|title=Large-Vessel Stroke as a Presenting Feature of Covid-19 in the Young|journal=New England Journal of Medicine|volume=382|issue=20|year=2020|pages=e60|issn=0028-4793|doi=10.1056/NEJMc2009787}}</ref>
|5
|5
|
|
Line 499: Line 126:
|July 12, 2020
|July 12, 2020
|New York
|New York
|Valderrama et al.
| Valderrama et al.
|1 (52-year old male)
|1 (52-year old male)
|
|
|
|
|
|
|Ischemic stroke
|[[Ischemic stroke]]
|-
|-
| colspan="8" |<small>'''Table 1'''. [[Prevalence]] of [[COVID-19]]-associated [[stroke]] varies in different studies</small>
| colspan="8" |<small>[[Prevalence]] of [[COVID-19]]-associated [[stroke]] varies in different studies</small>
|}<br />
|}<br />


*The incidence of stroke in hospitalized COVID-19 patients is reported to be 0.9–2%<ref name="TsivgoulisKatsanos2020">{{cite journal|last1=Tsivgoulis|first1=Georgios|last2=Katsanos|first2=Aristeidis H.|last3=Ornello|first3=Raffaele|last4=Sacco|first4=Simona|title=Ischemic Stroke Epidemiology During the COVID-19 Pandemic|journal=Stroke|volume=51|issue=7|year=2020|pages=1924–1926|issn=0039-2499|doi=10.1161/STROKEAHA.120.030791}}</ref>.majority of them being ischemic subtype. The mortality in COVID-19 positive stroke patients is reported to be 39%<ref name="MaoJin2020">{{cite journal|last1=Mao|first1=Ling|last2=Jin|first2=Huijuan|last3=Wang|first3=Mengdie|last4=Hu|first4=Yu|last5=Chen|first5=Shengcai|last6=He|first6=Quanwei|last7=Chang|first7=Jiang|last8=Hong|first8=Candong|last9=Zhou|first9=Yifan|last10=Wang|first10=David|last11=Miao|first11=Xiaoping|last12=Li|first12=Yanan|last13=Hu|first13=Bo|title=Neurologic Manifestations of Hospitalized Patients With Coronavirus Disease 2019 in Wuhan, China|journal=JAMA Neurology|volume=77|issue=6|year=2020|pages=683|issn=2168-6149|doi=10.1001/jamaneurol.2020.1127}}</ref>.
*The [[incidence]] of [[stroke]] in hospitalized [[COVID-19]] patients is reported to be 0.9–2%<ref name="TsivgoulisKatsanos20202">{{cite journal|last1=Tsivgoulis|first1=Georgios|last2=Katsanos|first2=Aristeidis H.|last3=Ornello|first3=Raffaele|last4=Sacco|first4=Simona|title=Ischemic Stroke Epidemiology During the COVID-19 Pandemic|journal=Stroke|volume=51|issue=7|year=2020|pages=1924–1926|issn=0039-2499|doi=10.1161/STROKEAHA.120.030791}}</ref>.majority of them being ischemic subtype. The mortality in [[COVID-19]] positive [[stroke]] patients is reported to be 39%<ref name="MaoJin20202" />.


*The ischemic stroke prevalence in COVID-19 patients is 1.6%.<ref name="TsivgoulisKatsanos2020">{{cite journal|last1=Tsivgoulis|first1=Georgios|last2=Katsanos|first2=Aristeidis H.|last3=Ornello|first3=Raffaele|last4=Sacco|first4=Simona|title=Ischemic Stroke Epidemiology During the COVID-19 Pandemic|journal=Stroke|volume=51|issue=7|year=2020|pages=1924–1926|issn=0039-2499|doi=10.1161/STROKEAHA.120.030791}}</ref>
*The ischemic stroke [[prevalence]] in [[COVID-19]] patients is 1.6%.<ref name="TsivgoulisKatsanos20202" />


*A New York study published in May reported that the proportion of these strokes seem to be higher in younger men.<ref name="YaghiIshida2020">{{cite journal|last1=Yaghi|first1=Shadi|last2=Ishida|first2=Koto|last3=Torres|first3=Jose|last4=Mac Grory|first4=Brian|last5=Raz|first5=Eytan|last6=Humbert|first6=Kelley|last7=Henninger|first7=Nils|last8=Trivedi|first8=Tushar|last9=Lillemoe|first9=Kaitlyn|last10=Alam|first10=Shazia|last11=Sanger|first11=Matthew|last12=Kim|first12=Sun|last13=Scher|first13=Erica|last14=Dehkharghani|first14=Seena|last15=Wachs|first15=Michael|last16=Tanweer|first16=Omar|last17=Volpicelli|first17=Frank|last18=Bosworth|first18=Brian|last19=Lord|first19=Aaron|last20=Frontera|first20=Jennifer|title=SARS-CoV-2 and Stroke in a New York Healthcare System|journal=Stroke|volume=51|issue=7|year=2020|pages=2002–2011|issn=0039-2499|doi=10.1161/STROKEAHA.120.030335}}</ref> Most of these strokes are large vessel ischemic strokes and are catastrophic.
* A New York study published in May reported that the proportion of these [[strokes]] seem to be higher in younger men.<ref name="YaghiIshida20202" /> Most of these [[strokes]] are large vessel [[Ischemic stroke|ischemic strokes]] and are catastrophic.


*In a retrospective observational case series of six stroke patients in a hospital in Italy, with lab confirmed COVID-19, the median age reported was 69 years. Ischemic stroke subtype was seen in 4 patients(67%) as compared to hemorrhagic which was only seen in 2 patients (33%). Vascular risk factors were seen in 5/6 patients, which included diabetes mellitus, arterial hypertension
*In a retrospective [[observational case series]] of six [[stroke]] patients in a hospital in Italy, with lab confirmed [[COVID-19]], the median age reported was 69 years. [[Ischemic stroke]] subtype was seen in 4 patients(67%) as compared to [[hemorrhagic]] which was only seen in 2 patients (33%). [[Vascular]] risk factors were seen in 5/6 patients, which included [[diabetes mellitus]], [[arterial hypertension]]


*In a single center retrospective study conducted in Wuhan by Qin C. et al. which included 1875 laboratory-confirmed COVID-19 patients from january 27th, 2020, to March 5th, 2020, 50 patients had history of stroke. The median age of this study group was 63 years, with stroke patients relatively older(70 years) when compared to non-stroke patients (62 years).<ref name="QinZhou2020">{{cite journal|last1=Qin|first1=Chuan|last2=Zhou|first2=Luoqi|last3=Hu|first3=Ziwei|last4=Yang|first4=Sheng|last5=Zhang|first5=Shuoqi|last6=Chen|first6=Man|last7=Yu|first7=Haihan|last8=Tian|first8=Dai-Shi|last9=Wang|first9=Wei|title=Clinical Characteristics and Outcomes of COVID-19 Patients With a History of Stroke in Wuhan, China|journal=Stroke|volume=51|issue=7|year=2020|pages=2219–2223|issn=0039-2499|doi=10.1161/STROKEAHA.120.030365}}</ref>
*In a single center retrospective study conducted in Wuhan by Qin C. et al. which included 1875 laboratory-confirmed [[COVID-19]] patients from january 27th, 2020, to March 5th, 2020, 50 patients had history of [[stroke]]. The median age of this study group was 63 years, with stroke patients relatively older(70 years) when compared to non-stroke patients (62 years).<ref name="QinZhou20202" />


*Stroke is one of the [[neurological]] manifestations in patients with severe infection. There is limited information on [[COVID-19]] patients with [[stroke]] who survived.


Stroke is one of the neurological manifestations in patients with severe infection.
To view epidemiology and demographics of COVID-19 section, click [[COVID-19 epidemiology and demographics|here]].
There is limited information on COVID-19 patients with stroke who survived.
==Risk Factors==


==Risk Factors==
*According to one of the study conducted in New York, Stroke in [[COVID-19]] infected patients is seen in relatively young patients as compared to with non COVID-19 patients.<ref name="YaghiIshida20202" />
*According to one of the study conducted in New York, Stroke in COVID-19 infected patients is seen in relatively young patients as compared to with non COVID-19 patients.<ref name="YaghiIshida2020">{{cite journal|last1=Yaghi|first1=Shadi|last2=Ishida|first2=Koto|last3=Torres|first3=Jose|last4=Mac Grory|first4=Brian|last5=Raz|first5=Eytan|last6=Humbert|first6=Kelley|last7=Henninger|first7=Nils|last8=Trivedi|first8=Tushar|last9=Lillemoe|first9=Kaitlyn|last10=Alam|first10=Shazia|last11=Sanger|first11=Matthew|last12=Kim|first12=Sun|last13=Scher|first13=Erica|last14=Dehkharghani|first14=Seena|last15=Wachs|first15=Michael|last16=Tanweer|first16=Omar|last17=Volpicelli|first17=Frank|last18=Bosworth|first18=Brian|last19=Lord|first19=Aaron|last20=Frontera|first20=Jennifer|title=SARS-CoV-2 and Stroke in a New York Healthcare System|journal=Stroke|volume=51|issue=7|year=2020|pages=2002–2011|issn=0039-2499|doi=10.1161/STROKEAHA.120.030335}}</ref>
 
* A study by Mao et. al. reported [[COVID-19]] associated [[stroke]] in seen in critically patients. The patients who developed [[stroke]] were older population with [[comorbidities]] like [[diabetes]], [[hypertension]], etc.


*A study by Mao et. al. reported COVID-19 associated stroke in seen in critically patients. The patients who developed stroke were older population with comorbidities like diabetes, hypertension, etc.  
*However, due to disparities in the [[stroke]] [[prevalence]] in different studies, no clear association has been established.


*However, due to disparities in the stroke prevalence in different studies, no clear association has been established.


To view risk factors of COVID-19 section, click [[COVID-19 risk factors|here]].
==Screening==
==Screening==


*There is insufficient evidence to recommend routine screening for stroke in COVID-19 patients. However, if the patient presents with stroke, COVID-19 screening should be done.
*There is insufficient evidence to recommend routine [[screening]] for [[stroke]] in [[COVID-19]] patients. However, if the patient presents with [[stroke]], [[COVID-19]] screening should be done.
 
 
To view screening of COVID-19 section, click [[COVID-19 screening|here]].
==Natural History, Complications, and Prognosis ==


==Natural History, Complications, and Prognosis==
*[[Prognosis]] is generally poor for [[COVID-19]] patients with stroke. A study reported a high proportion of these patients were admitted to the [[Intensive care unit|Intensive Care Unit(ICU)]] and required [[mechanical ventilation]]. The mortality of [[COVID-19]] patients with [[stroke]] was much higher when compared to [[COVID-19]] patients with no history of stroke<ref name="QinZhou20202" />.


*Prognosis is generally poor for COVID-19 patients with stroke. A study reported a high proportion of these patients were admitted to the Intensive Care Unit(ICU) and required mechanical ventilation. The mortality of COVID-19 patients with stroke was much higher when compared to COVID-19 patients with no history of stroke<ref name="QinZhou2020">{{cite journal|last1=Qin|first1=Chuan|last2=Zhou|first2=Luoqi|last3=Hu|first3=Ziwei|last4=Yang|first4=Sheng|last5=Zhang|first5=Shuoqi|last6=Chen|first6=Man|last7=Yu|first7=Haihan|last8=Tian|first8=Dai-Shi|last9=Wang|first9=Wei|title=Clinical Characteristics and Outcomes of COVID-19 Patients With a History of Stroke in Wuhan, China|journal=Stroke|volume=51|issue=7|year=2020|pages=2219–2223|issn=0039-2499|doi=10.1161/STROKEAHA.120.030365}}</ref>.


To view natural history, complications and prognosis of COVID-19 section, click [[COVID-19 natural history, complications and prognosis|here]].
==Diagnosis==
==Diagnosis==


*[[Diagnosis]] of [[stroke]] associated to [[COVID-19]] is based on history of [[Symptoms|symptoms development]], [[physical examination]], [[Imaging studies|imaging findings]], plus a positive [[COVID-19 diagnostic study of choice|COVID-19 test]].
*[[Diagnosis]] of [[stroke]] associated to [[COVID-19]] is based on history of [[Symptoms|symptoms development]], [[physical examination]], [[Imaging studies|imaging findings]], plus a positive [[COVID-19 diagnostic study of choice|COVID-19 test]].
* There are no standard criteria for the evaluation of [[stroke]] associated to [[COVID-19]].
*There are no standard criteria for the evaluation of [[stroke]] associated to [[COVID-19]].
*General management protocols for [[COVID-19]]-associated [[stroke]] should be established so that brain imaging can be realized as prompt as possible in patients who may be candidates for [[Fibrinolysis|IV fibrinolysis]] or mechanical [[thrombectomy]] or both.<ref name="PowersRabinstein2019" />
*General management protocols for [[COVID-19]]-associated [[stroke]] should be established so that brain imaging can be realized as prompt as possible in patients who may be candidates for [[Fibrinolysis|IV fibrinolysis]] or mechanical [[thrombectomy]] or both.<ref name="PowersRabinstein20192">{{cite journal|last1=Powers|first1=William J.|last2=Rabinstein|first2=Alejandro A.|last3=Ackerson|first3=Teri|last4=Adeoye|first4=Opeolu M.|last5=Bambakidis|first5=Nicholas C.|last6=Becker|first6=Kyra|last7=Biller|first7=José|last8=Brown|first8=Michael|last9=Demaerschalk|first9=Bart M.|last10=Hoh|first10=Brian|last11=Jauch|first11=Edward C.|last12=Kidwell|first12=Chelsea S.|last13=Leslie-Mazwi|first13=Thabele M.|last14=Ovbiagele|first14=Bruce|last15=Scott|first15=Phillip A.|last16=Sheth|first16=Kevin N.|last17=Southerland|first17=Andrew M.|last18=Summers|first18=Deborah V.|last19=Tirschwell|first19=David L.|title=Guidelines for the Early Management of Patients With Acute Ischemic Stroke: 2019 Update to the 2018 Guidelines for the Early Management of Acute Ischemic Stroke: A Guideline for Healthcare Professionals From the American Heart Association/American Stroke Association|journal=Stroke|volume=50|issue=12|year=2019|issn=0039-2499|doi=10.1161/STR.0000000000000211}}</ref>
*The current [[Diagnosis|diagnostic]] approach for [[stroke]] associated to [[COVID-19]] is the same as for people with non-COVID infection.
*The current [[Diagnosis|diagnostic]] approach for [[stroke]] associated to [[COVID-19]] is the same as for people with non-COVID infection.


===Diagnostic Study of Choice===
===Diagnostic Study of Choice===


* Non-contrast [[Computed tomography|CT Scan]] of the [[brain]] within 20 minutes of arrival to the emergency department is the diagnostic test of choice for [[stroke]] in patients with [[COVID-19]] infection.<ref name="pmid25884860">{{cite journal |vauthors=Yew KS, Cheng EM |title=Diagnosis of acute stroke |journal=Am Fam Physician |volume=91 |issue=8 |pages=528–36 |date=April 2015 |pmid=25884860 |doi= |url=}}</ref>
*Non-contrast [[Computed tomography|CT Scan]] of the [[brain]] within 20 minutes of arrival to the emergency department is the diagnostic test of choice for [[stroke]] in patients with [[COVID-19]] infection.<ref name="pmid25884860">{{cite journal |vauthors=Yew KS, Cheng EM |title=Diagnosis of acute stroke |journal=Am Fam Physician |volume=91 |issue=8 |pages=528–36 |date=April 2015 |pmid=25884860 |doi= |url=}}</ref>
*[[MRI]] may detect smaller [[lesions]] with certainty if required, once the [[hemorrhagic stroke]] is excluded by non-contrast [[CT Scan]].<ref name="BouchezSztajzel2017">{{cite journal|last1=Bouchez|first1=Laurie|last2=Sztajzel|first2=Roman|last3=Vargas|first3=Maria Isabel|last4=Machi|first4=Paolo|last5=Kulcsar|first5=Zsolt|last6=Poletti|first6=Pierre-Alexandre|last7=Pereira|first7=Vitor Mendes|last8=Lövblad|first8=Karl-Olof|title=CT imaging selection in acute stroke|journal=European Journal of Radiology|volume=96|year=2017|pages=153–161|issn=0720048X|doi=10.1016/j.ejrad.2016.10.026}}</ref>
*[[MRI]] may detect smaller [[lesions]] with certainty if required, once the [[hemorrhagic stroke]] is excluded by non-contrast [[CT Scan]].<ref name="BouchezSztajzel2017">{{cite journal|last1=Bouchez|first1=Laurie|last2=Sztajzel|first2=Roman|last3=Vargas|first3=Maria Isabel|last4=Machi|first4=Paolo|last5=Kulcsar|first5=Zsolt|last6=Poletti|first6=Pierre-Alexandre|last7=Pereira|first7=Vitor Mendes|last8=Lövblad|first8=Karl-Olof|title=CT imaging selection in acute stroke|journal=European Journal of Radiology|volume=96|year=2017|pages=153–161|issn=0720048X|doi=10.1016/j.ejrad.2016.10.026}}</ref>
*In a patient who presents with [[neurological]] [[Symptom|symptoms]], [[RT-PCR]] for [[SARS-CoV-2]] should be done as well.
*In a patient who presents with [[neurological]] [[Symptom|symptoms]], [[RT-PCR]] for [[SARS-CoV-2]] should be done as well.
Line 553: Line 186:
===History and Symptoms===
===History and Symptoms===


* The extent of damage and symptoms which may result from [[stroke]] associated to [[COVID-19]] highly depends on the site of [[infarction]], the [[blood vessels]] involved, and the presence of other [[risk factors]].<ref name="pmid24251821">{{cite journal| author=Hernández-Pérez M, Pérez de la Ossa N, Aleu A, Millán M, Gomis M, Dorado L et al.| title=Natural history of acute stroke due to occlusion of the middle cerebral artery and intracranial internal carotid artery. | journal=J Neuroimaging | year= 2014 | volume= 24 | issue= 4 | pages= 354-8 | pmid=24251821 | doi=10.1111/jon.12062 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=24251821  }}</ref><ref name="pmid24323077">{{cite journal| author=Lima FO, Furie KL, Silva GS, Lev MH, Camargo EC, Singhal AB et al.| title=Prognosis of untreated strokes due to anterior circulation proximal intracranial arterial occlusions detected by use of computed tomography angiography. | journal=JAMA Neurol | year= 2014 | volume= 71 | issue= 2 | pages= 151-7 | pmid=24323077 | doi=10.1001/jamaneurol.2013.5007 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=24323077  }}</ref><ref name="pmid3975967">{{cite journal| author=Moulin DE, Lo R, Chiang J, Barnett HJ| title=Prognosis in middle cerebral artery occlusion. | journal=Stroke | year= 1985 | volume= 16 | issue= 2 | pages= 282-4 | pmid=3975967 | doi= | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=3975967  }}</ref>
*The extent of damage and symptoms which may result from [[stroke]] associated to [[COVID-19]] highly depends on the site of [[infarction]], the [[blood vessels]] involved, and the presence of other [[risk factors]].<ref name="pmid242518212">{{cite journal| author=Hernández-Pérez M, Pérez de la Ossa N, Aleu A, Millán M, Gomis M, Dorado L et al.| title=Natural history of acute stroke due to occlusion of the middle cerebral artery and intracranial internal carotid artery. | journal=J Neuroimaging | year= 2014 | volume= 24 | issue= 4 | pages= 354-8 | pmid=24251821 | doi=10.1111/jon.12062 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=24251821  }}</ref><ref name="pmid243230772">{{cite journal| author=Lima FO, Furie KL, Silva GS, Lev MH, Camargo EC, Singhal AB et al.| title=Prognosis of untreated strokes due to anterior circulation proximal intracranial arterial occlusions detected by use of computed tomography angiography. | journal=JAMA Neurol | year= 2014 | volume= 71 | issue= 2 | pages= 151-7 | pmid=24323077 | doi=10.1001/jamaneurol.2013.5007 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=24323077  }}</ref><ref name="pmid39759672">{{cite journal| author=Moulin DE, Lo R, Chiang J, Barnett HJ| title=Prognosis in middle cerebral artery occlusion. | journal=Stroke | year= 1985 | volume= 16 | issue= 2 | pages= 282-4 | pmid=3975967 | doi= | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=3975967  }}</ref>


*The majority of patients with [[COVID-19]]-associated [[stroke]] initially presented with [[respiratory]] symptoms (''e.g.'' [[cough]], [[shortness of breath]] ''etc'') and constitutional features. These patients developed [[Cerebrovascular disease|cerebrovascular]] signs and symptoms later in the course of disease.
*The majority of patients with [[COVID-19]]-associated [[stroke]] initially presented with [[respiratory]] symptoms (''e.g.'' [[cough]], [[shortness of breath]] ''etc'') and constitutional features. These patients developed [[Cerebrovascular disease|cerebrovascular]] signs and symptoms later in the course of disease.
*A few studies reported cases of patients with COVID-19 infection which presented with neurological symptoms suggestive of [[stroke]] ('''Table 2'''). Most of these patients had underlying history of chronic diseases such as [[diabetes mellitus]], [[atrial fibrillation]], etc.<ref name="AvulaNalleballe2020" /><ref name="ZandiManji2020" />
*The following table summarizes the signs and symptoms found in 5 patients with COVID-19 infection that later acquiered a stroke:<ref name="AvulaNalleballe20202">{{cite journal|last1=Avula|first1=Akshay|last2=Nalleballe|first2=Krishna|last3=Narula|first3=Naureen|last4=Sapozhnikov|first4=Steven|last5=Dandu|first5=Vasuki|last6=Toom|first6=Sudhamshi|last7=Glaser|first7=Allison|last8=Elsayegh|first8=Dany|title=COVID-19 presenting as stroke|journal=Brain, Behavior, and Immunity|volume=87|year=2020|pages=115–119|issn=08891591|doi=10.1016/j.bbi.2020.04.077}}</ref><ref name="ZandiManji20202">{{cite journal|last1=Zandi|first1=Michael S|last2=Manji|first2=Hadi|last3=Jäger|first3=Hans Rolf|last4=Hoskote|first4=Chandrashekar|last5=Werring|first5=David J|last6=Vincent|first6=Angela|last7=Howard|first7=Robin|last8=Spillane|first8=Jennifer|last9=Lunn|first9=Michael P|last10=Thom|first10=Maria|last11=Houlihan|first11=Catherine|last12=Carletti|first12=Francesco|last13=Farmer|first13=Simon F|last14=Longley|first14=Nicky|last15=Checkley|first15=Anna|last16=Simister|first16=Robert|last17=Perry|first17=Richard J|last18=Chandratheva|first18=Arvind|last19=Schott|first19=Jonathan M|last20=Silber|first20=Eli|last21=Sreedharan|first21=Jemeen|last22=Attwell|first22=David|last23=Yoong|first23=Michael|last24=Davies|first24=Nicholas W S|last25=Carswell|first25=Christopher|last26=Everitt|first26=Alex D|last27=Miller|first27=Thomas D|last28=Hotton|first28=Gary|last29=Foulkes|first29=Alexander J M|last30=Trip|first30=S Anand|last31=Yong|first31=Wisdom|last32=Keddie|first32=Stephen|last33=Levee|first33=Viva|last34=Mehta|first34=Puja R|last35=Lim|first35=Soon Tjin|last36=McLoughlin|first36=Benjamin|last37=McNamara|first37=Patricia|last38=Morrow|first38=Jasper|last39=Christofi|first39=Gerry|last40=Price|first40=Gary|last41=Tuzlali|first41=Hatice|last42=Boyd|first42=Elena|last43=Chinthapalli|first43=Krishna|last44=Geraldes|first44=Ruth|last45=Khoo|first45=Anthony|last46=Vivekanandam|first46=Vinojini|last47=Zambreanu|first47=Laura|last48=Raftopoulos|first48=Rhian E|last49=Kumar|first49=Guru|last50=Jayaseelan|first50=Dipa L|last51=Bharucha|first51=Tehmina|last52=Wiethoff|first52=Sarah|last53=Nortley|first53=Ross|last54=Benjamin|first54=Laura|last55=Brown|first55=Rachel L|last56=Paterson|first56=Ross W|title=The emerging spectrum of COVID-19 neurology: clinical, radiological and laboratory findings|journal=Brain|year=2020|issn=0006-8950|doi=10.1093/brain/awaa240}}</ref>


{| class="wikitable"
{| class="wikitable"
|-
|-
 
!Patient no.
! Patient no.
!Onset of neurologic symptoms <br />
 
!Age and Gender <br />
!Onset of neurologic symptoms <BR />
!Neurologic Signs & Symptoms
 
!Age and Gender <BR />
 
! Neurologic Signs & Symptoms
 
|-
|-
 
| 1
|1
 
|On Admission
|On Admission
|73-year old, Male
|73-year old, Male
 
|[[Respiratory distress]], [[fever]], and [[altered mental status]] <ref name="AvulaNalleballe20202" />
|[[Respiratory distress]], [[fever]], and [[altered mental status]] <ref name="AvulaNalleballe2020">{{cite journal|last1=Avula|first1=Akshay|last2=Nalleballe|first2=Krishna|last3=Narula|first3=Naureen|last4=Sapozhnikov|first4=Steven|last5=Dandu|first5=Vasuki|last6=Toom|first6=Sudhamshi|last7=Glaser|first7=Allison|last8=Elsayegh|first8=Dany|title=COVID-19 presenting as stroke|journal=Brain, Behavior, and Immunity|volume=87|year=2020|pages=115–119|issn=08891591|doi=10.1016/j.bbi.2020.04.077}}</ref>
 
|-
|-
|2
|2
|On Admission
|On Admission
|83-year old, Female
|83-year old, Female
 
|[[Fever]], [[Speech|slurring of speech]], [[facial droop]], and reduced oral intake <ref name="AvulaNalleballe20202" />
|[[Fever]], [[Speech|slurring of speech]], [[facial droop]], and reduced oral intake <ref name="AvulaNalleballe2020">{{cite journal|last1=Avula|first1=Akshay|last2=Nalleballe|first2=Krishna|last3=Narula|first3=Naureen|last4=Sapozhnikov|first4=Steven|last5=Dandu|first5=Vasuki|last6=Toom|first6=Sudhamshi|last7=Glaser|first7=Allison|last8=Elsayegh|first8=Dany|title=COVID-19 presenting as stroke|journal=Brain, Behavior, and Immunity|volume=87|year=2020|pages=115–119|issn=08891591|doi=10.1016/j.bbi.2020.04.077}}</ref>
 
|-
|-
|3
|3
|On Admission
|80-year old female
|[[Left sided weakness]], [[altered mental status]], one week history of frequent falls <ref name="AvulaNalleballe20202" />
|-
| 4
|On Admission
|88-year old, Female
|An 15 minute episode of [[Muscle weakness|weakness]] and [[numbness]] of right arm and word finding difficulty <ref name="AvulaNalleballe20202" />
|-
| 5
|On Admission
|58-year old, Male
|Dense Right-sided [[Muscle weakness|weakness]] and acute onset [[aphasia]] <ref name="ZandiManji20202" />
|-
| colspan="4" |<small>Reported cases of patients with COVID-19 infection and symptoms suggestive of [[stroke]].</small>
|-
|}


|On Admission
==== Most common symptoms ====


|80-year old female
* [[Cough]]
* [[Dyspnea]]
* [[Fever]]
* Altered [[mental status]]


|[[Left sided weakness]], [[altered mental status]], one week history of frequent falls <ref name="AvulaNalleballe2020">{{cite journal|last1=Avula|first1=Akshay|last2=Nalleballe|first2=Krishna|last3=Narula|first3=Naureen|last4=Sapozhnikov|first4=Steven|last5=Dandu|first5=Vasuki|last6=Toom|first6=Sudhamshi|last7=Glaser|first7=Allison|last8=Elsayegh|first8=Dany|title=COVID-19 presenting as stroke|journal=Brain, Behavior, and Immunity|volume=87|year=2020|pages=115–119|issn=08891591|doi=10.1016/j.bbi.2020.04.077}}</ref>
==== Less common symptoms ====


|-
* [[Aphasia]]
* Motor impairmant
* Sensory impairmant
* [[Slurred speech]]
* [[Facial droop]]
* Frequent falls
* Reduced oral intake


|4
===Physical Examination===


| On Admission
*The physical examination findings in [[stroke]] associated to [[COVID-19]] will highly depend on the site of [[infarction]], the [[blood vessels]] involved, and the presence of other [[risk factors]].<ref name="pmid242518212" /><ref name="pmid243230772" /><ref name="pmid39759672" /><br />


|88-year old, Female
{| align="center" style="border: 0px; font-size: 90%; margin: 3px;"
|+'''Physical examination of patients with stroke depending on vessel involved'''
! style="background: #4479BA; width: 150px;" |{{fontcolor|#FFF|Vessel involved}}
! style="background: #4479BA; width: 350px;" |{{fontcolor|#FFF|Physical examination}}
|-
| style="padding: 5px 5px; background: #DCDCDC;" |'''Anterior cerebral artery '''<ref name="pmid1789511722">{{cite journal| author=Nagaratnam N, Davies D, Chen E| title=Clinical effects of anterior cerebral artery infarction. | journal=J Stroke Cerebrovasc Dis | year= 1998 | volume= 7 | issue= 6 | pages= 391-7 | pmid=17895117 | doi= | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=17895117  }}</ref><ref name="pmid1245307722">{{cite journal| author=Kumral E, Bayulkem G, Evyapan D, Yunten N| title=Spectrum of anterior cerebral artery territory infarction: clinical and MRI findings. | journal=Eur J Neurol | year= 2002 | volume= 9 | issue= 6 | pages= 615-24 | pmid=12453077 | doi= | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=12453077  }}</ref>
| style="padding: 5px 5px; background: #F5F5F5;" |
*Decreased motor strength- contralateral lower limb<ref name="pmid1789511722" />
*Absent or decreased sensations-contralateral lower limb<ref name="pmid1789511722" />
* Increased reflexes-contralateral lower limb
*Babinski's reflex positive
*[[Hemineglect|Constructional and dressing apraxia-hemineglect]] <ref name="pmid1245307722" /><ref name="pmid735641522">{{cite journal| author=Alexander MP, Schmitt MA| title=The aphasia syndrome of stroke in the left anterior cerebral artery territory. | journal=Arch Neurol | year= 1980 | volume= 37 | issue= 2 | pages= 97-100 | pmid=7356415 | doi= | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=7356415  }}</ref>
* Transcortical motor [[aphasia]](non fluent)<ref name="pmid1245307722" /><ref name="pmid735641522" />
*Mutism
*Contralateral grasp and sucking reflex
*Memory impairment<ref name="pmid165102252">{{cite journal| author=Mizuta H, Motomura N| title=Memory dysfunction in caudate infarction caused by Heubner's recurring artery occlusion. | journal=Brain Cogn | year= 2006 | volume= 61 | issue= 2 | pages= 133-8 | pmid=16510225 | doi=10.1016/j.bandc.2005.11.002 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=16510225  }}</ref>
*Confabulation<ref name="pmid179401692">{{cite journal| author=den Heijer T, Ruitenberg A, Bakker J, Hertzberger L, Kerkhoff H| title=Neurological picture. Bilateral caudate nucleus infarction associated with variant in circle of Willis. | journal=J Neurol Neurosurg Psychiatry | year= 2007 | volume= 78 | issue= 11 | pages= 1175 | pmid=17940169 | doi=10.1136/jnnp.2006.112656 | pmc=2117617 | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=17940169  }}</ref>
|-
| style="padding: 5px 5px; background: #DCDCDC;" |'''Middle cerebral artery'''<ref name="pmid231396842">{{cite journal| author=Lemieux F, Lanthier S, Chevrier MC, Gioia L, Rouleau I, Cereda C et al.| title=Insular ischemic stroke: clinical presentation and outcome. | journal=Cerebrovasc Dis Extra | year= 2012 | volume= 2 | issue= 1 | pages= 80-7 | pmid=23139684 | doi=10.1159/000343177 | pmc=3492997 | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=23139684  }}</ref>


| An 15 minute episode of [[Muscle weakness|weakness]] and [[numbness]] of right arm and word finding difficulty <ref name="AvulaNalleballe2020">{{cite journal|last1=Avula|first1=Akshay|last2=Nalleballe|first2=Krishna|last3=Narula|first3=Naureen|last4=Sapozhnikov|first4=Steven|last5=Dandu|first5=Vasuki|last6=Toom|first6=Sudhamshi|last7=Glaser|first7=Allison|last8=Elsayegh|first8=Dany|title=COVID-19 presenting as stroke|journal=Brain, Behavior, and Immunity|volume=87|year=2020|pages=115–119|issn=08891591|doi=10.1016/j.bbi.2020.04.077}}</ref>
*Most common site of infarction
| style="padding: 5px 5px; background: #F5F5F5;" |
*Decreased motor strength-contralateral arm and face <ref name="pmid192101942">{{cite journal| author=Arboix A, Martí-Vilalta JL| title=Lacunar stroke. | journal=Expert Rev Neurother | year= 2009 | volume= 9 | issue= 2 | pages= 179-96 | pmid=19210194 | doi=10.1586/14737175.9.2.179 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=19210194  }}</ref><ref name="pmid15652332">{{cite journal| author=Melo TP, Bogousslavsky J, van Melle G, Regli F| title=Pure motor stroke: a reappraisal. | journal=Neurology | year= 1992 | volume= 42 | issue= 4 | pages= 789-95 | pmid=1565233 | doi= | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=1565233  }}</ref><ref name="pmid82565702">{{cite journal| author=Tei H, Uchiyama S, Maruyama S| title=Capsular infarcts: location, size and etiology of pure motor hemiparesis, sensorimotor stroke and ataxic hemiparesis. | journal=Acta Neurol Scand | year= 1993 | volume= 88 | issue= 4 | pages= 264-8 | pmid=8256570 | doi= | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=8256570  }}</ref>
*Absent or decreased sensations-contralateral left arm and face<ref name="pmid1789511722" />
*Increased deep tendon reflexes - contralateral arm
*Babinski's sign positive
*[[Hemineglect|Contralateral Hemineglect]]
*[[Broca's aphasia]]<ref name="pmid250163862">{{cite journal| author=Fridriksson J, Fillmore P, Guo D, Rorden C| title=Chronic Broca's Aphasia Is Caused by Damage to Broca's and Wernicke's Areas. | journal=Cereb Cortex | year= 2015 | volume= 25 | issue= 12 | pages= 4689-96 | pmid=25016386 | doi=10.1093/cercor/bhu152 | pmc=4669036 | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=25016386  }}</ref><ref name="pmid40626222">{{cite journal| author=Henderson VW| title=Lesion localization in Broca's aphasia. Implications from Broca's aphasia without hemiparesis. | journal=Arch Neurol | year= 1985 | volume= 42 | issue= 12 | pages= 1210-2 | pmid=4062622 | doi= | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=4062622  }}</ref><ref name="pmid957766322">{{cite journal| author=Soma Y| title=[Cerebrovascular disorder and the language areas]. | journal=Rinsho Shinkeigaku | year= 1997 | volume= 37 | issue= 12 | pages= 1117-9 | pmid=9577663 | doi= | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=9577663  }}</ref>
*[[Wernicke's aphasia]]<ref name="pmid957766322" />
*Contralateral visual field defect
|-
| style="padding: 5px 5px; background: #DCDCDC;" |'''[[Posterior cerebral artery]]<ref name="pmid1077364222">{{cite journal| author=Brandt T, Steinke W, Thie A, Pessin MS, Caplan LR| title=Posterior cerebral artery territory infarcts: clinical features, infarct topography, causes and outcome. Multicenter results and a review of the literature. | journal=Cerebrovasc Dis | year= 2000 | volume= 10 | issue= 3 | pages= 170-82 | pmid=10773642 | doi=16053 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=10773642  }}</ref><ref name="pmid2237787922">{{cite journal| author=Cereda C, Carrera E| title=Posterior cerebral artery territory infarctions. | journal=Front Neurol Neurosci | year= 2012 | volume= 30 | issue= | pages= 128-31 | pmid=22377879 | doi=10.1159/000333610 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=22377879  }}</ref><ref name="pmid1040498422">{{cite journal| author=Yamamoto Y, Georgiadis AL, Chang HM, Caplan LR| title=Posterior cerebral artery territory infarcts in the New England Medical Center Posterior Circulation Registry. | journal=Arch Neurol | year= 1999 | volume= 56 | issue= 7 | pages= 824-32 | pmid=10404984 | doi= | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=10404984  }}</ref>'''<ref name="pmid374233922">{{cite journal| author=Fisher CM| title=The posterior cerebral artery syndrome. | journal=Can J Neurol Sci | year= 1986 | volume= 13 | issue= 3 | pages= 232-9 | pmid=3742339 | doi= | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=3742339  }}</ref><ref name="pmid1040498422" /><ref name="pmid443417622">{{cite journal| author=Caplan LR, Hedley-Whyte T| title=Cuing and memory dysfunction in alexia without agraphia. A case report. | journal=Brain | year= 1974 | volume= 97 | issue= 2 | pages= 251-62 | pmid=4434176 | doi= | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=4434176  }}</ref>
| style="padding: 5px 5px; background: #F5F5F5;" |
*Contralateral visual field defects<ref name="pmid1077364222" /><ref name="pmid374233922" /><ref name="pmid36060352">{{cite journal| author=Pessin MS, Lathi ES, Cohen MB, Kwan ES, Hedges TR, Caplan LR| title=Clinical features and mechanism of occipital infarction. | journal=Ann Neurol | year= 1987 | volume= 21 | issue= 3 | pages= 290-9 | pmid=3606035 | doi=10.1002/ana.410210311 | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=3606035  }}</ref>
* Complex hallucinations
*[[Prosopagnosia]]<ref name="pmid71996552">{{cite journal| author=Damasio AR, Damasio H, Van Hoesen GW| title=Prosopagnosia: anatomic basis and behavioral mechanisms. | journal=Neurology | year= 1982 | volume= 32 | issue= 4 | pages= 331-41 | pmid=7199655 | doi= | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=7199655  }}</ref>
*Unable to remember names-Nominal aphasia
*[[Gerstmann syndrome|Acalculia and agraphia -Gerstmann syndrome]]
*Memory deficit
*Hemisensory loss<ref name="pmid164023522">{{cite journal| author=Melo TP, Bogousslavsky J| title=Hemiataxia-hypesthesia: a thalamic stroke syndrome. | journal=J Neurol Neurosurg Psychiatry | year= 1992 | volume= 55 | issue= 7 | pages= 581-4 | pmid=1640235 | doi= | pmc=489170 | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=1640235  }}</ref>


*[[Hemiparesis|Contralateral hemiparesis]]<ref name="pmid164023522" />
*Thalamic pain syndrome <ref name="pmid2237787922" />
*[[Hemiballismus]]
*[[Oculomotor nerve palsy|Occulomotor nerve palsy]]
*Intention [[Tremor|tremors]]
*[[Alexia]] without [[agraphia]]<ref name="pmid443417622" />
|-
|-
| rowspan="4" style="padding: 5px 5px; background: #DCDCDC;" |'''Vertebrobasilar artery<ref name="pmid1092697222">{{cite journal| author=Caplan L| title=Posterior circulation ischemia: then, now, and tomorrow. The Thomas Willis Lecture-2000. | journal=Stroke | year= 2000 | volume= 31 | issue= 8 | pages= 2011-23 | pmid=10926972 | doi= | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=10926972  }}</ref>'''
| style="padding: 5px 5px; background: #F5F5F5;" |'''Midbrain'''
*[[Weber syndrome|'''Weber syndrome''']]<ref name="pmid247786252">{{cite journal| author=Nouh A, Remke J, Ruland S| title=Ischemic posterior circulation stroke: a review of anatomy, clinical presentations, diagnosis, and current management. | journal=Front Neurol | year= 2014 | volume= 5 | issue=  | pages= 30 | pmid=24778625 | doi=10.3389/fneur.2014.00030 | pmc=3985033 | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=24778625  }}</ref>


|5
*Contralateral decreased motor strength
*Deviation of eye downwards and outwards-ipsilateral 3rd nerve palsy
|-
| style="padding: 5px 5px; background: #F5F5F5;" |'''Medulla'''
*[[Lateral medullary syndrome|'''Lateral medullary syndrome''']]<ref name="pmid1092697222" /><ref name="pmid85037982">{{cite journal| author=Sacco RL, Freddo L, Bello JA, Odel JG, Onesti ST, Mohr JP| title=Wallenberg's lateral medullary syndrome. Clinical-magnetic resonance imaging correlations. | journal=Arch Neurol | year= 1993 | volume= 50 | issue= 6 | pages= 609-14 | pmid=8503798 | doi= | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=8503798  }}</ref><ref name="pmid223462152">{{cite journal| author=Shetty SR, Anusha R, Thomas PS, Babu SG| title=Wallenberg's syndrome. | journal=J Neurosci Rural Pract | year= 2012 | volume= 3 | issue= 1 | pages= 100-2 | pmid=22346215 | doi=10.4103/0976-3147.91980 | pmc=3271596 | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=22346215  }}</ref>


| On Admission
:*Impaired [[gag reflex]]
:*[[Uvula]] deviated to the opposite side of lesion
:*[[Ptosis]]
:*[[Miosis]]
:*[[Enophthalmos]]
:*Ipsilateral impaired pain, touch and temperature sensation on the upper half of the face
:*Contralateral decreased motor strength and sensory loss
:*Romberg's sign


|58-year old, Male
*[[Medial medullary syndrome|'''Medial medullary syndrome''']]<ref name="pmid1092697222" /><ref name="pmid76603962">{{cite journal| author=Kim JS, Kim HG, Chung CS| title=Medial medullary syndrome. Report of 18 new patients and a review of the literature. | journal=Stroke | year= 1995 | volume= 26 | issue= 9 | pages= 1548-52 | pmid=7660396 | doi= | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=7660396  }}</ref><ref name="pmid227874952">{{cite journal| author=Kim K, Lee HS, Jung YH, Kim YD, Nam HS, Nam CM et al.| title=Mechanism of medullary infarction based on arterial territory involvement. | journal=J Clin Neurol | year= 2012 | volume= 8 | issue= 2 | pages= 116-22 | pmid=22787495 | doi=10.3988/jcn.2012.8.2.116 | pmc=3391616 | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=22787495  }}</ref>


| Dense Right-sided [[Muscle weakness|weakness]] and acute onset [[aphasia]] <ref name="ZandiManji2020">{{cite journal|last1=Zandi|first1=Michael S|last2=Manji|first2=Hadi|last3=Jäger|first3=Hans Rolf|last4=Hoskote|first4=Chandrashekar|last5=Werring|first5=David J|last6=Vincent|first6=Angela|last7=Howard|first7=Robin|last8=Spillane|first8=Jennifer|last9=Lunn|first9=Michael P|last10=Thom|first10=Maria|last11=Houlihan|first11=Catherine|last12=Carletti|first12=Francesco|last13=Farmer|first13=Simon F|last14=Longley|first14=Nicky|last15=Checkley|first15=Anna|last16=Simister|first16=Robert|last17=Perry|first17=Richard J|last18=Chandratheva|first18=Arvind|last19=Schott|first19=Jonathan M|last20=Silber|first20=Eli|last21=Sreedharan|first21=Jemeen|last22=Attwell|first22=David|last23=Yoong|first23=Michael|last24=Davies|first24=Nicholas W S|last25=Carswell|first25=Christopher|last26=Everitt|first26=Alex D|last27=Miller|first27=Thomas D|last28=Hotton|first28=Gary|last29=Foulkes|first29=Alexander J M|last30=Trip|first30=S Anand|last31=Yong|first31=Wisdom|last32=Keddie|first32=Stephen|last33=Levee|first33=Viva|last34=Mehta|first34=Puja R|last35=Lim|first35=Soon Tjin|last36=McLoughlin|first36=Benjamin|last37=McNamara|first37=Patricia|last38=Morrow|first38=Jasper|last39=Christofi|first39=Gerry|last40=Price|first40=Gary|last41=Tuzlali|first41=Hatice|last42=Boyd|first42=Elena|last43=Chinthapalli|first43=Krishna|last44=Geraldes|first44=Ruth|last45=Khoo|first45=Anthony|last46=Vivekanandam|first46=Vinojini|last47=Zambreanu|first47=Laura|last48=Raftopoulos|first48=Rhian E|last49=Kumar|first49=Guru|last50=Jayaseelan|first50=Dipa L|last51=Bharucha|first51=Tehmina|last52=Wiethoff|first52=Sarah|last53=Nortley|first53=Ross|last54=Benjamin|first54=Laura|last55=Brown|first55=Rachel L|last56=Paterson|first56=Ross W|title=The emerging spectrum of COVID-19 neurology: clinical, radiological and laboratory findings|journal=Brain|year=2020|issn=0006-8950|doi=10.1093/brain/awaa240}}</ref>
:*Deviation of the tongue to the side of the lesion-[[hypoglossal nerve]]
:*Contralateral decreased motor strength
:*Contralateral loss of position sense, [[vibration]] and two point discrimination
|-
|-
| colspan="4" |<small>'''Table 2'''. Reported cases of patients with COVID-19 infection and symptoms suggestive of [[stroke]].</small>
| style="padding: 5px 5px; background: #F5F5F5;" |'''Pons'''
*Inability to close eyes
*Deviation of angle of mouth
*[[Facial muscles|Facial muscle]] weakness-[[Facial nerve]]
*[[Ageusia|Loss of taste]] and sensation on the anterior two thirds of the tongue
*Affected eye deviation inwardsand down-Abducent  nerve
*[[Locked-In syndrome|Locked-in syndrome]]<ref name="pmid37389622">{{cite journal| author=Patterson JR, Grabois M| title=Locked-in syndrome: a review of 139 cases. | journal=Stroke | year= 1986 | volume= 17 | issue= 4 | pages= 758-64 | pmid=3738962 | doi= | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=3738962  }}</ref><ref name="pmid48108962">{{cite journal| author=Karp JS, Hurtig HI| title="Locked-in" state with bilateral midbrain infarcts. | journal=Arch Neurol | year= 1974 | volume= 30 | issue= 2 | pages= 176-8 | pmid=4810896 | doi= | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=4810896  }}</ref>
|-
|-
| style="padding: 5px 5px; background: #F5F5F5;" |'''Cerebellum'''
*[[Vertigo]]
*[[Romberg's test|Romberg's sign]] positive
*[[Intension tremors]]
*[[Dysdiadochokinesia]]
*[[Dysarthria]]
|-
|}<br />


|}
===Physical Examination===
* The physical examination findings in [[stroke]] associated to [[COVID-19]] will highly depend on the site of [[infarction]], the [[blood vessels]] involved, and the presence of other [[risk factors]].<ref name="pmid24251821" /><ref name="pmid24323077" /><ref name="pmid3975967" />
*The use of [[stroke]] scales helps to measure the degree of [[neurological]] [[Disability|impairment]], ease communication, may help select patients candidates for [[Fibrinolysis|fibrinolytic]] or [[Thrombectomy|mechanical]] therapy, permits the evaluation of changing clinical status, and identifies those patients at higher risk for complications (eg. [[intracerebral hemorrhage]]).<ref name="AdamsDavis1999">{{cite journal|last1=Adams|first1=H. P.|last2=Davis|first2=P. H.|last3=Leira|first3=E. C.|last4=Chang|first4=K.-C.|last5=Bendixen|first5=B. H.|last6=Clarke|first6=W. R.|last7=Woolson|first7=R. F.|last8=Hansen|first8=M. D.|title=Baseline NIH Stroke Scale score strongly predicts outcome after stroke: A report of the Trial of Org 10172 in Acute Stroke Treatment (TOAST)|journal=Neurology|volume=53|issue=1|year=1999|pages=126–126|issn=0028-3878|doi=10.1212/WNL.53.1.126}}</ref>
*The use of [[stroke]] scales helps to measure the degree of [[neurological]] [[Disability|impairment]], ease communication, may help select patients candidates for [[Fibrinolysis|fibrinolytic]] or [[Thrombectomy|mechanical]] therapy, permits the evaluation of changing clinical status, and identifies those patients at higher risk for complications (eg. [[intracerebral hemorrhage]]).<ref name="AdamsDavis1999">{{cite journal|last1=Adams|first1=H. P.|last2=Davis|first2=P. H.|last3=Leira|first3=E. C.|last4=Chang|first4=K.-C.|last5=Bendixen|first5=B. H.|last6=Clarke|first6=W. R.|last7=Woolson|first7=R. F.|last8=Hansen|first8=M. D.|title=Baseline NIH Stroke Scale score strongly predicts outcome after stroke: A report of the Trial of Org 10172 in Acute Stroke Treatment (TOAST)|journal=Neurology|volume=53|issue=1|year=1999|pages=126–126|issn=0028-3878|doi=10.1212/WNL.53.1.126}}</ref>
*The  [[National Institutes of Health Stroke Scale|National Institutes of Health Stroke Scale (NIHSS)]] ('''Table 3''') is a tool used to measure the [[Neurological|neurologic]] [[Disability|impairment]] caused by a stroke in a [[quantitative]] manner.<ref name="urlwww.ninds.nih.gov">{{cite web |url=https://www.ninds.nih.gov/sites/default/files/NIH_Stroke_Scale_Booklet.pdf |title=www.ninds.nih.gov |format= |work= |accessdate=}}</ref><ref name="urlNational Institutes of Health Stroke Scale - Wikipedia" /> The [[National Institutes of Health Stroke Scale|NIHSS]] is composed of 11 items, each of which scores a specific ability between a 0 and 4. For each item, a score of 0 typically indicates normal function in that specific ability, while a higher score is indicative of some level of impairment. The individual scores from each item are summed in order to calculate a patient's total [[National Institutes of Health Stroke Scale|NIHSS]] score. The maximum possible score is 42, with the minimum score being a 0.<ref name="urlNational Institutes of Health Stroke Scale - Wikipedia">{{cite web |url=https://en.wikipedia.org/wiki/National_Institutes_of_Health_Stroke_Scale |title=National Institutes of Health Stroke Scale - Wikipedia |format= |work= |accessdate=}}</ref>
*The  [[National Institutes of Health Stroke Scale|National Institutes of Health Stroke Scale (NIHSS)]] is a tool used to measure the [[Neurological|neurologic]] [[Disability|impairment]] caused by a stroke in a [[quantitative]] manner.<ref name="urlwww.ninds.nih.gov">{{cite web |url=https://www.ninds.nih.gov/sites/default/files/NIH_Stroke_Scale_Booklet.pdf |title=www.ninds.nih.gov |format= |work= |accessdate=}}</ref><ref name="urlNational Institutes of Health Stroke Scale - Wikipedia2">{{cite web |url=https://en.wikipedia.org/wiki/National_Institutes_of_Health_Stroke_Scale |title=National Institutes of Health Stroke Scale - Wikipedia |format= |work= |accessdate=}}</ref> The [[National Institutes of Health Stroke Scale|NIHSS]] is composed of 11 items, each of which scores a specific ability between a 0 and 4. For each item, a score of 0 typically indicates normal function in that specific ability, while a higher score is indicative of some level of impairment. The individual scores from each item are summed in order to calculate a patient's total [[National Institutes of Health Stroke Scale|NIHSS]] score. The maximum possible score is 42, with the minimum score being a 0.<ref name="urlNational Institutes of Health Stroke Scale - Wikipedia2" />


{| class="wikitable"
{| class="wikitable"
Line 684: Line 394:
|-
|-
| rowspan="5" |5
| rowspan="5" |5
| rowspan="5" |Motor function (arm)
| rowspan="5" | Motor function (arm)
a. Left
a. Left


Line 696: Line 406:
|3—No effort against [[gravity]]
|3—No effort against [[gravity]]
|-
|-
|4—No movement
| 4—No movement
|-
|-
| rowspan="5" |6
| rowspan="5" |6
Line 751: Line 461:
|0—Absent
|0—Absent
|-
|-
|1—Mild loss (1 sensory modality lost)  
| 1—Mild loss (1 sensory modality lost)
|-
|-
|2—Severe loss (2 modalities lost)
|2—Severe loss (2 modalities lost)
|-
|-
| colspan="3" |<small>'''Table 3'''. Adapted from Lyden et al., 1994</small><ref name="LydenBrott1994">{{cite journal|last1=Lyden|first1=P|last2=Brott|first2=T|last3=Tilley|first3=B|last4=Welch|first4=K M|last5=Mascha|first5=E J|last6=Levine|first6=S|last7=Haley|first7=E C|last8=Grotta|first8=J|last9=Marler|first9=J|title=Improved reliability of the NIH Stroke Scale using video training. NINDS TPA Stroke Study Group.|journal=Stroke|volume=25|issue=11|year=1994|pages=2220–2226|issn=0039-2499|doi=10.1161/01.STR.25.11.2220}}</ref> <small>American Heart Association, Inc.</small>
| colspan="3" |<small>Adapted from Lyden et al., 1994</small><ref name="LydenBrott1994">{{cite journal|last1=Lyden|first1=P|last2=Brott|first2=T|last3=Tilley|first3=B|last4=Welch|first4=K M|last5=Mascha|first5=E J|last6=Levine|first6=S|last7=Haley|first7=E C|last8=Grotta|first8=J|last9=Marler|first9=J|title=Improved reliability of the NIH Stroke Scale using video training. NINDS TPA Stroke Study Group.|journal=Stroke|volume=25|issue=11|year=1994|pages=2220–2226|issn=0039-2499|doi=10.1161/01.STR.25.11.2220}}</ref> <small>American Heart Association, Inc.</small>
|}
|}


* The pre-stroke Modified Rankin Score (mRS) ('''Table 4''') is an estimated score used to assess the patient’s pre-[[stroke]] level of function. An estimated mRS should be abstracted from current [[medical record]] documentation about the patient’s ability to perform activities of daily living prior to the hospitalization for the acute [[ischemic stroke]] event.<ref name="urlPre-Stroke Modified Rankin Score (mRS) (v2018B)" />
*The pre-stroke Modified Rankin Score (mRS) is an estimated score used to assess the patient’s pre-[[stroke]] level of function. An estimated mRS should be abstracted from current [[medical record]] documentation about the patient’s ability to perform activities of daily living prior to the hospitalization for the acute [[ischemic stroke]] event.<ref name="urlPre-Stroke Modified Rankin Score (mRS) (v2018B)2">{{cite web |url=https://manual.jointcommission.org/releases/TJC2018B/DataElem0773.html |title=Pre-Stroke Modified Rankin Score (mRS) (v2018B) |format= |work= |accessdate=}}</ref>


{| class="wikitable"
{| class="wikitable"
Line 789: Line 499:
|1
|1
|-
|-
|L - Lentiform Nucleus    
| L - Lentiform Nucleus    
|1
|1
|-
|-
Line 798: Line 508:
|1
|1
|-
|-
| colspan="3" |<small>'''Table 4.''' Adapted from The University of Calgary ASPECT score in Accute stroke, 2020</small><ref name="urlHome">{{cite web |url=http://aspectsinstroke.com/ |title=Home |format= |work= |accessdate=}}</ref>
| colspan="3" |<small>Adapted from The University of Calgary ASPECT score in Accute stroke, 2020</small><ref name="urlHome2">{{cite web |url=http://aspectsinstroke.com/ |title=Home |format= |work= |accessdate=}}</ref>
|}
|}


* [[ASPECT|Alberta stroke program early CT score (ASPECTS)]] ('''Table 5''') is a 10 point quantitative score used to asses early [[Ischemia|ischemic]] changes in patients suspected of having acute large vessel anterior circulation [[occlusion]].<ref name="urlHome" />
*[[ASPECT|Alberta stroke program early CT score (ASPECTS)]] is a 10 point quantitative score used to asses early [[Ischemia|ischemic]] changes in patients suspected of having acute large vessel anterior circulation [[occlusion]].<ref name="urlHome2" />


{| class="wikitable"
{| class="wikitable"
Line 808: Line 518:
!Item tested
!Item tested
|-
|-
|0
| 0
|The patient had no residual [[symptoms]].
|The patient had no residual [[symptoms]].
|-
|-
Line 821: Line 531:
|-
|-
|4
|4
| The patient had moderately severe [[disability]]; unable to walk or attend to bodily functions without assistance of another individual.
|The patient had moderately severe [[disability]]; unable to walk or attend to bodily functions without assistance of another individual.
|-
|-
|5
|5
Line 829: Line 539:
|Unable to determine (UTD) from the medical record documentation.
|Unable to determine (UTD) from the medical record documentation.
|-
|-
| colspan="2" |<small>'''Table 5'''. Adapted from Specifications Manual for Joint Commission National Quality Measures, 2018</small><ref name="urlPre-Stroke Modified Rankin Score (mRS) (v2018B)">{{cite web |url=https://manual.jointcommission.org/releases/TJC2018B/DataElem0773.html |title=Pre-Stroke Modified Rankin Score (mRS) (v2018B) |format= |work= |accessdate=}}</ref>
| colspan="2" |<small>Adapted from Specifications Manual for Joint Commission National Quality Measures, 2018</small><ref name="urlPre-Stroke Modified Rankin Score (mRS) (v2018B)2" />
|}
|}<br />
<br />
===Laboratory Findings===
===Laboratory Findings===


* Patients with [[stroke]] associated to [[COVID-19]] will have a positive test for [[COVID-19]] confirmed either through molecular tests, nucleic acid amplification test, or serological testing.
*Patients with [[stroke]] associated to [[COVID-19]] will have a positive test for [[COVID-19]] confirmed either through molecular tests, nucleic acid amplification test, or serological testing.


*[[Serum glucose]] assessment is the only lab study that should proceed [[Alteplase|IV alteplase]] initiation, this should be over 50 mg/dL for its administration.<ref name="PowersRabinstein2019" />
*[[Serum glucose]] assessment is the only lab study that should proceed [[Alteplase|IV alteplase]] initiation, this should be over 50 mg/dL for its administration.<ref name="PowersRabinstein20192" />
*[[Coagulation studies]] and [[complete blood count]] should be delayed until after [[Alteplase|IV alteplase]] initiation unless there is suspicion for a [[coagulopathy]] disorder.<ref name="PowersRabinstein2019" />
*[[Coagulation studies]] and [[complete blood count]] should be delayed until after [[Alteplase|IV alteplase]] initiation unless there is suspicion for a [[coagulopathy]] disorder.<ref name="PowersRabinstein20192" />
*[[Troponin]] should be assessed in patients presenting with [[ischemic stroke]].<ref name="PowersRabinstein2019" />
*[[Troponin]] should be assessed in patients presenting with [[ischemic stroke]].<ref name="PowersRabinstein20192" />
*In adults who are 20 years of age or older and not on [[Lipid-lowering medication|lipid-lowering therapy]], measurement of either a fasting or a nonfasting [[Lipid profile|plasma lipid profile]] is effective in estimating [[Coronary heart disease|atherosclerotic cardiovascular disease (ASCVD)]] risk and documenting baseline low-density lipoprotein cholesterol (LDL-C).  4 to 12 weeks after statin initiation or dose adjustment and every 3 to 12 months thereafter based on need to assess adherence or safety.<ref name="PowersRabinstein2019" />*
*In patirents 20 years or older and not on [[Lipid-lowering medication|lipid-lowering therapy]], baseline measurement of [[Lipid profile|plasma lipid profile]] is effective in estimating [[Coronary heart disease|atherosclerotic cardiovascular disease (ASCVD)]]; after that, [[Lipid profile|plasma lipid profile]] should be measured every 4 to 12 weeks after statin initiation.<ref name="PowersRabinstein20192" />
*In patients older than 75 years of age with clinical [[Coronary heart disease|ASCVD]], it is reasonable to initiate moderate or high-intensity [[statin]] therapy after evaluation of the potential for [[Coronary heart disease|ASCVD]] risk reduction, [[adverse effects]], and [[Drug interaction|drug interactions]].*


=== Ultrasound ===
===Ultrasound===


*[[Echocardiography]] may be necessary in patients with [[ischemic stroke]] to identify and prevent secondary causes of [[stroke]].
*[[Echocardiography]] may be necessary in patients with [[ischemic stroke]] to identify and prevent secondary causes of [[stroke]] such as structural changes, [[atrial fibrillation]], valvular heart disease and atherosclerosis.<ref name="pmid18629351">{{cite journal| author=de Abreu TT, Mateus S, Carreteiro C, Correia J| title=Therapeutic implications of transesophageal echocardiography after transthoracic echocardiography on acute stroke patients. | journal=Vasc Health Risk Manag | year= 2008 | volume= 4 | issue= 1 | pages= 167-72 | pmid=18629351 | doi= | pmc=2464746 | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=18629351  }}</ref><ref name="pmid218047762">{{cite journal| author=Ustrell X, Pellisé A| title=Cardiac workup of ischemic stroke. | journal=Curr Cardiol Rev | year= 2010 | volume= 6 | issue= 3 | pages= 175-83 | pmid=21804776 | doi=10.2174/157340310791658721 | pmc=2994109 | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=21804776  }}</ref><ref name="pmid20931511">{{cite journal| author=Kolo PM, Sanya EO, Omotosho AB, Chijoke A, Dada SA| title=The role of echocardiography in the management of stroke. | journal=West Afr J Med | year= 2010 | volume= 29 | issue= 4 | pages= 239-43 | pmid=20931511 | doi= | pmc= | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=20931511  }}</ref><ref name="pmid27256218">{{cite journal |vauthors=Nakanishi K, Homma S |title=Role of echocardiography in patients with stroke |journal=J Cardiol |volume=68 |issue=2 |pages=91–9 |date=August 2016 |pmid=27256218 |doi=10.1016/j.jjcc.2016.05.001 |url=}}</ref>
*[[Carotid]] [[Ultrasound guidance|ultrasound]] should be performed in all patients with [[ischemic stroke]] to assess for narrowing of [[Carotid arteries|carotids]] and decrease recurrence.
*[[Carotid]] [[Ultrasound guidance|ultrasound]] should be performed in all patients with [[ischemic stroke]] to assess for narrowing of [[Carotid arteries|carotids]] and decrease recurrence of thromboembolic events.<ref name="urlCarotid ultrasound - Mayo Clinic">{{cite web |url=https://www.mayoclinic.org/tests-procedures/carotid-ultrasound/about/pac-20393399#:~:text=Ischemic%20stroke,-Ischemic%20stroke%20occurs&text=A%20carotid%20ultrasound%20is%20performed,that%20circulate%20in%20the%20bloodstream. |title=Carotid ultrasound - Mayo Clinic |format= |work= |accessdate=}}</ref>


=== X-ray ===
===X-ray===


* There is no evidence of usefulness of [[Chest X-ray|chest x-ray]] in the acute setting of [[stroke]].<ref name="PowersRabinstein2019" />
*[[Head]] [[x-rays]] can help rule out foreign metal objects in the head before performing an [[MRI]],<ref name="pmid31536242">{{cite journal |vauthors=Shafaat O, Sotoudeh H |title= |journal= |volume= |issue= |pages= |date= |pmid=31536242 |doi= |url=}}</ref> detect skull fractures, and identify intracranial [[Calcification|calcifications]] that may serve as hallmarks for [[brain]] structural changes in countries with poor access to more specific [[imaging]] tests.
*There is no evidence of usefulness of [[Chest X-ray|chest x-ray]] in the acute setting of [[stroke]].<ref name="PowersRabinstein20192" />


===CT scan===
===CT scan===


* Non-contrasted [[Computed tomography|CT scan]] of the head should should always be performed before initiating [[Alteplase|IV alteplase]].<ref name="PowersRabinstein2019">{{cite journal|last1=Powers|first1=William J.|last2=Rabinstein|first2=Alejandro A.|last3=Ackerson|first3=Teri|last4=Adeoye|first4=Opeolu M.|last5=Bambakidis|first5=Nicholas C.|last6=Becker|first6=Kyra|last7=Biller|first7=José|last8=Brown|first8=Michael|last9=Demaerschalk|first9=Bart M.|last10=Hoh|first10=Brian|last11=Jauch|first11=Edward C.|last12=Kidwell|first12=Chelsea S.|last13=Leslie-Mazwi|first13=Thabele M.|last14=Ovbiagele|first14=Bruce|last15=Scott|first15=Phillip A.|last16=Sheth|first16=Kevin N.|last17=Southerland|first17=Andrew M.|last18=Summers|first18=Deborah V.|last19=Tirschwell|first19=David L.|title=Guidelines for the Early Management of Patients With Acute Ischemic Stroke: 2019 Update to the 2018 Guidelines for the Early Management of Acute Ischemic Stroke: A Guideline for Healthcare Professionals From the American Heart Association/American Stroke Association|journal=Stroke|volume=50|issue=12|year=2019|issn=0039-2499|doi=10.1161/STR.0000000000000211}}</ref>
*Non-contrasted [[Computed tomography|CT scan]] of the head should should always be performed before initiating [[Alteplase|IV alteplase]].<ref name="PowersRabinstein20192" />
* Once [[hemorragic stroke]] is excluded, [[Computed tomography|CT scan]] with contrast should be realized in patients with no history of renal disease without measuring [[creatinine]] concentration, taking into account that both [[COVID-19]] infection and stroke increase the risk for [[Renal insufficiency|renal impairment]] per se.<ref name="QureshiAbd-Allah2020" /><ref name="ChengLuo2020">{{cite journal|last1=Cheng|first1=Yichun|last2=Luo|first2=Ran|last3=Wang|first3=Kun|last4=Zhang|first4=Meng|last5=Wang|first5=Zhixiang|last6=Dong|first6=Lei|last7=Li|first7=Junhua|last8=Yao|first8=Ying|last9=Ge|first9=Shuwang|last10=Xu|first10=Gang|title=Kidney disease is associated with in-hospital death of patients with COVID-19|journal=Kidney International|volume=97|issue=5|year=2020|pages=829–838|issn=00852538|doi=10.1016/j.kint.2020.03.005}}</ref>
*Once [[hemorragic stroke]] is excluded, [[Computed tomography|CT scan]] with contrast should be realized in patients with no history of renal disease without measuring [[creatinine]] concentration, taking into account that both [[COVID-19]] infection and stroke increase the risk for [[Renal insufficiency|renal impairment]] per se.<ref name="QureshiAbd-Allah20202">{{cite journal|last1=Qureshi|first1=Adnan I|last2=Abd-Allah|first2=Foad|last3=Al-Senani|first3=Fahmi|last4=Aytac|first4=Emrah|last5=Borhani-Haghighi|first5=Afshin|last6=Ciccone|first6=Alfonso|last7=Gomez|first7=Camilo R|last8=Gurkas|first8=Erdem|last9=Hsu|first9=Chung Y|last10=Jani|first10=Vishal|last11=Jiao|first11=Liqun|last12=Kobayashi|first12=Adam|last13=Lee|first13=Jun|last14=Liaqat|first14=Jahanzeb|last15=Mazighi|first15=Mikael|last16=Parthasarathy|first16=Rajsrinivas|last17=Steiner|first17=Thorsten|last18=Suri|first18=M Fareed K|last19=Toyoda|first19=Kazunori|last20=Ribo|first20=Marc|last21=Gongora-Rivera|first21=Fernando|last22=Oliveira-Filho|first22=Jamary|last23=Uzun|first23=Guven|last24=Wang|first24=Yongjun|title=Management of acute ischemic stroke in patients with COVID-19 infection: Report of an international panel|journal=International Journal of Stroke|volume=15|issue=5|year=2020|pages=540–554|issn=1747-4930|doi=10.1177/1747493020923234}}</ref><ref name="ChengLuo2020">{{cite journal|last1=Cheng|first1=Yichun|last2=Luo|first2=Ran|last3=Wang|first3=Kun|last4=Zhang|first4=Meng|last5=Wang|first5=Zhixiang|last6=Dong|first6=Lei|last7=Li|first7=Junhua|last8=Yao|first8=Ying|last9=Ge|first9=Shuwang|last10=Xu|first10=Gang|title=Kidney disease is associated with in-hospital death of patients with COVID-19|journal=Kidney International|volume=97|issue=5|year=2020|pages=829–838|issn=00852538|doi=10.1016/j.kint.2020.03.005}}</ref>
*[[CT angiography]] of the brain may be needed in patients to make a decision for mechanical thrombectomy.<ref name="QureshiAbd-Allah2020" /><ref name="pmid18329713">{{cite journal |vauthors=Lövblad KO, Altrichter S, Viallon M, Sztajzel R, Delavelle J, Vargas MI, El-Koussy M, Federspiel A, Sekoranja L |title=Neuro-imaging of cerebral ischemic stroke |journal=J Neuroradiol |volume=35 |issue=4 |pages=197–209 |date=October 2008 |pmid=18329713 |doi=10.1016/j.neurad.2008.01.002 |url=}}</ref><ref name="SmithKent2018">{{cite journal|last1=Smith|first1=Eric E.|last2=Kent|first2=David M.|last3=Bulsara|first3=Ketan R.|last4=Leung|first4=Lester Y.|last5=Lichtman|first5=Judith H.|last6=Reeves|first6=Mathew J.|last7=Towfighi|first7=Amytis|last8=Whiteley|first8=William N.|last9=Zahuranec|first9=Darin B.|title=Accuracy of Prediction Instruments for Diagnosing Large Vessel Occlusion in Individuals With Suspected Stroke: A Systematic Review for the 2018 Guidelines for the Early Management of Patients With Acute Ischemic Stroke|journal=Stroke|volume=49|issue=3|year=2018|issn=0039-2499|doi=10.1161/STR.0000000000000160}}</ref>
*[[CT angiography]] of the brain may be needed in patients to make a decision for mechanical thrombectomy.<ref name="QureshiAbd-Allah20202" /><ref name="pmid18329713">{{cite journal |vauthors=Lövblad KO, Altrichter S, Viallon M, Sztajzel R, Delavelle J, Vargas MI, El-Koussy M, Federspiel A, Sekoranja L |title=Neuro-imaging of cerebral ischemic stroke |journal=J Neuroradiol |volume=35 |issue=4 |pages=197–209 |date=October 2008 |pmid=18329713 |doi=10.1016/j.neurad.2008.01.002 |url=}}</ref><ref name="SmithKent2018">{{cite journal|last1=Smith|first1=Eric E.|last2=Kent|first2=David M.|last3=Bulsara|first3=Ketan R.|last4=Leung|first4=Lester Y.|last5=Lichtman|first5=Judith H.|last6=Reeves|first6=Mathew J.|last7=Towfighi|first7=Amytis|last8=Whiteley|first8=William N.|last9=Zahuranec|first9=Darin B.|title=Accuracy of Prediction Instruments for Diagnosing Large Vessel Occlusion in Individuals With Suspected Stroke: A Systematic Review for the 2018 Guidelines for the Early Management of Patients With Acute Ischemic Stroke|journal=Stroke|volume=49|issue=3|year=2018|issn=0039-2499|doi=10.1161/STR.0000000000000160}}</ref>
*[[CT angiography|CT angiography's]] contrast can increase the risk of acute [[kidney injury]] in patients with [[COVID-19]] infection.<ref name="QureshiAbd-Allah2020" />
*[[CT angiography|CT angiography's]] contrast can increase the risk of acute [[kidney injury]] in patients with [[COVID-19]] infection.<ref name="QureshiAbd-Allah20202" />
*[[CT perfusion]] should be done in patients who present within 24 hours of the initiation of [[symptoms]].<ref name="QureshiAbd-Allah2020">{{cite journal|last1=Qureshi|first1=Adnan I|last2=Abd-Allah|first2=Foad|last3=Al-Senani|first3=Fahmi|last4=Aytac|first4=Emrah|last5=Borhani-Haghighi|first5=Afshin|last6=Ciccone|first6=Alfonso|last7=Gomez|first7=Camilo R|last8=Gurkas|first8=Erdem|last9=Hsu|first9=Chung Y|last10=Jani|first10=Vishal|last11=Jiao|first11=Liqun|last12=Kobayashi|first12=Adam|last13=Lee|first13=Jun|last14=Liaqat|first14=Jahanzeb|last15=Mazighi|first15=Mikael|last16=Parthasarathy|first16=Rajsrinivas|last17=Steiner|first17=Thorsten|last18=Suri|first18=M Fareed K|last19=Toyoda|first19=Kazunori|last20=Ribo|first20=Marc|last21=Gongora-Rivera|first21=Fernando|last22=Oliveira-Filho|first22=Jamary|last23=Uzun|first23=Guven|last24=Wang|first24=Yongjun|title=Management of acute ischemic stroke in patients with COVID-19 infection: Report of an international panel|journal=International Journal of Stroke|volume=15|issue=5|year=2020|pages=540–554|issn=1747-4930|doi=10.1177/1747493020923234}}</ref>
*[[CT perfusion]] should be done in patients who present within 24 hours of the initiation of [[symptoms]].<ref name="QureshiAbd-Allah20202" />
* Concurrent [[CT scan]] of the [[head]] and [[chest]] may be ordered at the same time in patients with [[COVID-19]] infection.<ref name="QureshiAbd-Allah2020" /><ref name="pmid32109013">{{cite journal |vauthors=Guan WJ, Ni ZY, Hu Y, Liang WH, Ou CQ, He JX, Liu L, Shan H, Lei CL, Hui DSC, Du B, Li LJ, Zeng G, Yuen KY, Chen RC, Tang CL, Wang T, Chen PY, Xiang J, Li SY, Wang JL, Liang ZJ, Peng YX, Wei L, Liu Y, Hu YH, Peng P, Wang JM, Liu JY, Chen Z, Li G, Zheng ZJ, Qiu SQ, Luo J, Ye CJ, Zhu SY, Zhong NS |title=Clinical Characteristics of Coronavirus Disease 2019 in China |journal=N. Engl. J. Med. |volume=382 |issue=18 |pages=1708–1720 |date=April 2020 |pmid=32109013 |pmc=7092819 |doi=10.1056/NEJMoa2002032 |url=}}</ref>
*Concurrent [[CT scan]] of the [[head]] and [[chest]] may be ordered at the same time in patients with [[COVID-19]] infection.<ref name="QureshiAbd-Allah20202" /><ref name="pmid32109013">{{cite journal |vauthors=Guan WJ, Ni ZY, Hu Y, Liang WH, Ou CQ, He JX, Liu L, Shan H, Lei CL, Hui DSC, Du B, Li LJ, Zeng G, Yuen KY, Chen RC, Tang CL, Wang T, Chen PY, Xiang J, Li SY, Wang JL, Liang ZJ, Peng YX, Wei L, Liu Y, Hu YH, Peng P, Wang JM, Liu JY, Chen Z, Li G, Zheng ZJ, Qiu SQ, Luo J, Ye CJ, Zhu SY, Zhong NS |title=Clinical Characteristics of Coronavirus Disease 2019 in China |journal=N. Engl. J. Med. |volume=382 |issue=18 |pages=1708–1720 |date=April 2020 |pmid=32109013 |pmc=7092819 |doi=10.1056/NEJMoa2002032 |url=}}</ref>
*[[CT angiography]] of the extracranial [[Carotid arteries|carotid]] and [[vertebral arteries]], in addition to the [[Intracranial hemorrhage|intracranial]] circulation,is recommended in patients who are potential candidates for mechanical [[thrombectomy]].<ref name="PowersRabinstein2019" /><ref name="AulickyMikulik2009">{{cite journal|last1=Aulicky|first1=P.|last2=Mikulik|first2=R.|last3=Goldemund|first3=D.|last4=Reif|first4=M.|last5=Dufek|first5=M.|last6=Kubelka|first6=T.|title=Safety of performing CT angiography in stroke patients treated with intravenous thrombolysis|journal=Journal of Neurology, Neurosurgery & Psychiatry|volume=81|issue=7|year=2009|pages=783–787|issn=0022-3050|doi=10.1136/jnnp.2009.184002}}</ref>
*[[CT angiography]] of the extracranial [[Carotid arteries|carotid]] and [[vertebral arteries]], in addition to the [[Intracranial hemorrhage|intracranial]] circulation,is recommended in patients who are potential candidates for mechanical [[thrombectomy]].<ref name="PowersRabinstein20192" /><ref name="AulickyMikulik2009">{{cite journal|last1=Aulicky|first1=P.|last2=Mikulik|first2=R.|last3=Goldemund|first3=D.|last4=Reif|first4=M.|last5=Dufek|first5=M.|last6=Kubelka|first6=T.|title=Safety of performing CT angiography in stroke patients treated with intravenous thrombolysis|journal=Journal of Neurology, Neurosurgery & Psychiatry|volume=81|issue=7|year=2009|pages=783–787|issn=0022-3050|doi=10.1136/jnnp.2009.184002}}</ref>


===MRI===
===MRI===


*[[MRI]] of the head before [[Alteplase|IV alteplase]] administration to exclude microbleeds is not recommended.<ref name="PowersRabinstein2019" />
*[[MRI]] of the head before [[Alteplase|IV alteplase]] administration to exclude microbleeds is not recommended.<ref name="PowersRabinstein20192" />
* Multimodal [[MRI]] of the head should be done in patients who present within 24 hours of the initiation of symptoms.<ref name="QureshiAbd-Allah2020" />
*Multimodal [[MRI]] of the head should be done in patients who present within 24 hours of the initiation of symptoms.<ref name="QureshiAbd-Allah20202" />
* In patients who wake up with clinical symptoms of [[stroke]] of unknown onset (more than 3 hours?), an [[MRI]] with diffusion-positive [[Fluid attenuated inversion recovery|FLAIR]] may be useful for selecting those who can benefit from [[Alteplase|IV alteplase]] administration.<ref name="PowersRabinstein2019" />
*In patients who wake up with clinical symptoms of [[stroke]] of unknown onset (more than 3 hours?), an [[MRI]] with diffusion-positive [[Fluid attenuated inversion recovery|FLAIR]] may be useful for selecting those who can benefit from [[Alteplase|IV alteplase]] administration.<ref name="PowersRabinstein20192" />
 
===Electrocardiogram===
 
*Baseline [[Electrocardiographic|electrocardiographic assessment]] is recommended in patients with [[stroke]] to help determine the follingow:<ref name="PowersRabinstein20192" /><ref name="pmid21804776">{{cite journal| author=Ustrell X, Pellisé A| title=Cardiac workup of ischemic stroke. | journal=Curr Cardiol Rev | year= 2010 | volume= 6 | issue= 3 | pages= 175-83 | pmid=21804776 | doi=10.2174/157340310791658721 | pmc=2994109 | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=21804776  }}</ref><ref name="pmid23661966">{{cite journal| author=Togha M, Sharifpour A, Ashraf H, Moghadam M, Sahraian MA| title=Electrocardiographic abnormalities in acute cerebrovascular events in patients with/without cardiovascular disease. | journal=Ann Indian Acad Neurol | year= 2013 | volume= 16 | issue= 1 | pages= 66-71 | pmid=23661966 | doi=10.4103/0972-2327.107710 | pmc=3644785 | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=23661966  }}</ref>
**Underlying cause for [[ischemic stroke]] such as [[Embolism|embolic]] source in [[atrial fibrillation]], ongoing myocardial ischemia, chronic myocardial injury and valvular abnormalities.
**[[ECG]] monitoring in first 24 hours may help determine the new onset or [[paroxysmal atrial fibrillation]].
**May determine cardiac complications of acute [[ischemic stroke]] such as [[myocardial ischemia]] or [[arrythmias]].
 
<br />


=== Electrocardiogram ===
*To view diagnosis of COVID-19 section, click [[COVID-19 diagnostic study of choice|here]].


* Baseline [[Electrocardiographic|electrocardiographic assessment]] is recommended in patients presenting with [[ischemic stroke]].<ref name="PowersRabinstein2019" />
==Treatment==
==Treatment==
=== Early assesment ===
* The initial assesment goals of ischemic stroke may include the following:<ref name="pmid2337020522">{{cite journal|author=Jauch EC, Saver JL, Adams HP, Bruno A, Connors JJ, Demaerschalk BM et al.|title=Guidelines for the early management of patients with acute ischemic stroke: a guideline for healthcare professionals from the American Heart Association/American Stroke Association.|journal=Stroke|year=2013|volume=44|issue=3|pages=870-947|pmid=23370205|doi=10.1161/STR.0b013e318284056a|pmc=|url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=23370205}}</ref>
{{familytree/start |summary=PE diagnosis Algorithm.}}
{{familytree |1= |2= |3= |4= |5= |6= |7= |8= |9= |10=,|11=-|12= A01 |13=-|14= A02 |15= |16= |17= |A01=1) '''''Airway'''''<br>
2) '''''Breathing'''''<br>
3) '''''Circulation'''''|A02='''1)''' O2 administration at SpO2<94%
'''2)''' Ventilatory assisstance is provided to patients who have difficulty breathting
'''3)''' IV fluids or vasopressors are given to maintain hemodynamic stability}}
{{familytree |1= |2= |3= |4= |5= |6= |7= |8= |9= |10=!|11= |12= |13= |14= |15= |16= |17= |18= |19= |20= |21= |22= |23= |24= |25= |26= |27= |28= }}
{{familytree |1= |2= |3= |4= |5= |6= |7= |8= |9= |10=)|11=-|12= B01 |13=-|14= B02 |15=-|16= B03 |17= |18= |19= |B01='''''Early Diagnosis'''''|B02='''''History and PE'''''
'''1)''' Help assess the severity of neurological deficit<br>
'''2)''' Give clue to the underlying cause<br> 
'''3)''' Determine the site of infarction <br>|B03='''''Initial diagnostic tests'''''
'''1)''' Noncontrast brain CT or brain MRI<br>
'''2)''' Blood glucose<br>
'''3)''' Oxygen saturation<br>
'''4)''' Serum electrolytes/renal function tests<br>
'''5)''' Complete blood count, including platelet count<br>
'''6)''' Markers of cardiac ischemia<br>
'''7)''' Prothrombin time/INR<br>
'''8)''' Activated partial thromboplastin time<br>
'''9)''' ECG}}
{{familytree |1= |2= |3= |4= |5= |6= |7= |8= |9= |10=!|11= |12= |13= |14= |15= |16= |17= |18= |19= |20= |21= |22= |23= |24= |25= |26= |27= |28= }}
{{familytree |1= |2= |3= |4= |5= |6= C01 |7=-|8=+|9=-|10= C02 |11=-|12= C03 |13=-|14= C04 |15= |16= |C01='''Early assessment of ischemic stroke'''|C02='''''Reperfusion therapy'''''|C03='''''Medical'''''<br>
r-tPA in eligible patients within 3-4.5 hours of onset of symptoms|C04='''''Surgical'''''}}
{{familytree |1= |2= |3= |4= |5= |6= |7= |8= |9= |10=!|11= |12= |13= |14= |15= |16= |17= |18= |19= |20= |21= |22= |23= |24= |25= |26= |27= |28= }}
{{familytree |1= |2= |3= |4= |5= |6= |7= |8= |9= |10=)|11=-|12= D01 |13=-|14= D02 |15= |16= |17= |D01='''''Symptomatic relief'''''|D02='''1)''' Fever<br>'''2)''' Headache<br>'''3)''' Shortness of breath<br>}}
{{familytree |1= |2= |3= |4= |5= |6= |7= |8= |9= |10=!|11= |12= |13= |14= |15= |16= |17= |18= |19= |20= |21= |22= |23= |24= |25= |26= |27= |28= }}
{{familytree |1= |2= |3= |4= |5= |6= |7= |8= |9= |10=`|11=-|12= E01 |13=-|14= E02 |15= |16= |17= |E01='''''Prognosis'''''|E02='''1)'''NIHSS scoring<br>
'''2)'''Glassgow coma scale}}
{{familytree/end}}
===Medical therapy===
===Medical therapy===


* The reported cases of treatment for [[COVID-19]]-associated [[stroke]] have followed the same guidelines as patients with no [[COVID-19]] infection. The following recommendations are mainly based on the current guidelines of management for stroke of the AHA 2019.
*The reported cases of treatment for [[COVID-19]]-associated [[stroke]] have followed the same guidelines as patients with no [[COVID-19]] infection. The following recommendations are mainly based on the current guidelines of management for stroke of the AHA 2019.
*[[Alteplase|IV alteplase]] is always preferred over mechanical [[thrombectomy]] when there are no contraindications.<ref name="SaverGoyal2016">{{cite journal|last1=Saver|first1=Jeffrey L.|last2=Goyal|first2=Mayank|last3=van der Lugt|first3=Aad|last4=Menon|first4=Bijoy K.|last5=Majoie|first5=Charles B. L. M.|last6=Dippel|first6=Diederik W.|last7=Campbell|first7=Bruce C.|last8=Nogueira|first8=Raul G.|last9=Demchuk|first9=Andrew M.|last10=Tomasello|first10=Alejandro|last11=Cardona|first11=Pere|last12=Devlin|first12=Thomas G.|last13=Frei|first13=Donald F.|last14=du Mesnil de Rochemont|first14=Richard|last15=Berkhemer|first15=Olvert A.|last16=Jovin|first16=Tudor G.|last17=Siddiqui|first17=Adnan H.|last18=van Zwam|first18=Wim H.|last19=Davis|first19=Stephen M.|last20=Castaño|first20=Carlos|last21=Sapkota|first21=Biggya L.|last22=Fransen|first22=Puck S.|last23=Molina|first23=Carlos|last24=van Oostenbrugge|first24=Robert J.|last25=Chamorro|first25=Ángel|last26=Lingsma|first26=Hester|last27=Silver|first27=Frank L.|last28=Donnan|first28=Geoffrey A.|last29=Shuaib|first29=Ashfaq|last30=Brown|first30=Scott|last31=Stouch|first31=Bruce|last32=Mitchell|first32=Peter J.|last33=Davalos|first33=Antoni|last34=Roos|first34=Yvo B. W. E. M.|last35=Hill|first35=Michael D.|title=Time to Treatment With Endovascular Thrombectomy and Outcomes From Ischemic Stroke: A Meta-analysis|journal=JAMA|volume=316|issue=12|year=2016|pages=1279|issn=0098-7484|doi=10.1001/jama.2016.13647}}</ref>
*[[Alteplase|IV alteplase]] is always preferred over mechanical [[thrombectomy]] when there are no contraindications.<ref name="SaverGoyal2016">{{cite journal|last1=Saver|first1=Jeffrey L.|last2=Goyal|first2=Mayank|last3=van der Lugt|first3=Aad|last4=Menon|first4=Bijoy K.|last5=Majoie|first5=Charles B. L. M.|last6=Dippel|first6=Diederik W.|last7=Campbell|first7=Bruce C.|last8=Nogueira|first8=Raul G.|last9=Demchuk|first9=Andrew M.|last10=Tomasello|first10=Alejandro|last11=Cardona|first11=Pere|last12=Devlin|first12=Thomas G.|last13=Frei|first13=Donald F.|last14=du Mesnil de Rochemont|first14=Richard|last15=Berkhemer|first15=Olvert A.|last16=Jovin|first16=Tudor G.|last17=Siddiqui|first17=Adnan H.|last18=van Zwam|first18=Wim H.|last19=Davis|first19=Stephen M.|last20=Castaño|first20=Carlos|last21=Sapkota|first21=Biggya L.|last22=Fransen|first22=Puck S.|last23=Molina|first23=Carlos|last24=van Oostenbrugge|first24=Robert J.|last25=Chamorro|first25=Ángel|last26=Lingsma|first26=Hester|last27=Silver|first27=Frank L.|last28=Donnan|first28=Geoffrey A.|last29=Shuaib|first29=Ashfaq|last30=Brown|first30=Scott|last31=Stouch|first31=Bruce|last32=Mitchell|first32=Peter J.|last33=Davalos|first33=Antoni|last34=Roos|first34=Yvo B. W. E. M.|last35=Hill|first35=Michael D.|title=Time to Treatment With Endovascular Thrombectomy and Outcomes From Ischemic Stroke: A Meta-analysis|journal=JAMA|volume=316|issue=12|year=2016|pages=1279|issn=0098-7484|doi=10.1001/jama.2016.13647}}</ref>
*The usefulness of [[anticoagulants]] such as [[thrombin]] inhibitors ([[dabigatran]]) and [[factor Xa]] inhibitors ([[rivaroxaban]], [[apixaban]], [[edoxaban]]) is not well established in the acute setting of [[stroke]].<ref name="GioiaKate2016">{{cite journal|last1=Gioia|first1=Laura C.|last2=Kate|first2=Mahesh|last3=Sivakumar|first3=Leka|last4=Hussain|first4=Dulara|last5=Kalashyan|first5=Hayrapet|last6=Buck|first6=Brian|last7=Bussiere|first7=Miguel|last8=Jeerakathil|first8=Thomas|last9=Shuaib|first9=Ashfaq|last10=Emery|first10=Derek|last11=Butcher|first11=Ken|title=Early Rivaroxaban Use After Cardioembolic Stroke May Not Result in Hemorrhagic Transformation|journal=Stroke|volume=47|issue=7|year=2016|pages=1917–1919|issn=0039-2499|doi=10.1161/STROKEAHA.116.013491}}</ref>
*The usefulness of [[anticoagulants]] such as [[thrombin]] inhibitors ([[dabigatran]]) and [[factor Xa]] inhibitors ([[rivaroxaban]], [[apixaban]], [[edoxaban]]) is not well established in the acute setting of [[stroke]].<ref name="GioiaKate2016">{{cite journal|last1=Gioia|first1=Laura C.|last2=Kate|first2=Mahesh|last3=Sivakumar|first3=Leka|last4=Hussain|first4=Dulara|last5=Kalashyan|first5=Hayrapet|last6=Buck|first6=Brian|last7=Bussiere|first7=Miguel|last8=Jeerakathil|first8=Thomas|last9=Shuaib|first9=Ashfaq|last10=Emery|first10=Derek|last11=Butcher|first11=Ken|title=Early Rivaroxaban Use After Cardioembolic Stroke May Not Result in Hemorrhagic Transformation|journal=Stroke|volume=47|issue=7|year=2016|pages=1917–1919|issn=0039-2499|doi=10.1161/STROKEAHA.116.013491}}</ref>
* The use of [[thrombolysis]] via ultrasound waves concomitant to [[Fibrinolysis|IV fibrinolysis]] is not recommended.<ref name="NacuKvistad2017">{{cite journal|last1=Nacu|first1=Aliona|last2=Kvistad|first2=Christopher E.|last3=Naess|first3=Halvor|last4=Øygarden|first4=Halvor|last5=Logallo|first5=Nicola|last6=Assmus|first6=Jörg|last7=Waje-Andreassen|first7=Ulrike|last8=Kurz|first8=Kathinka D.|last9=Neckelmann|first9=Gesche|last10=Thomassen|first10=Lars|title=NOR-SASS (Norwegian Sonothrombolysis in Acute Stroke Study)|journal=Stroke|volume=48|issue=2|year=2017|pages=335–341|issn=0039-2499|doi=10.1161/STROKEAHA.116.014644}}</ref>
*The use of [[thrombolysis]] via ultrasound waves concomitant to [[Fibrinolysis|IV fibrinolysis]] is not recommended.<ref name="NacuKvistad2017">{{cite journal|last1=Nacu|first1=Aliona|last2=Kvistad|first2=Christopher E.|last3=Naess|first3=Halvor|last4=Øygarden|first4=Halvor|last5=Logallo|first5=Nicola|last6=Assmus|first6=Jörg|last7=Waje-Andreassen|first7=Ulrike|last8=Kurz|first8=Kathinka D.|last9=Neckelmann|first9=Gesche|last10=Thomassen|first10=Lars|title=NOR-SASS (Norwegian Sonothrombolysis in Acute Stroke Study)|journal=Stroke|volume=48|issue=2|year=2017|pages=335–341|issn=0039-2499|doi=10.1161/STROKEAHA.116.014644}}</ref>
*In patients who are 75 years of age or younger with clinical [[Coronary heart disease|ASCVD]], high-intensity [[statin]] therapy should be initiated or continued with the aim of achieving a 50% or greater reduction in [[LDL-C]] levels.*
*High-intensity [[statin]] therapy should be initiated in patients younger than 75 with clinical [[Coronary heart disease|ASCVD]], to achieving a reduction in [[LDL-C]] levels of at least 50%.
*A clinician-patient risk discussion is recommended before initiation of statin therapy to review net clinical benefit, weighing the potential for [[Coronary heart disease|ASCVD]] risk reduction against the potential for statin-associated side effects, statin-drug interactions, and safety, while emphasizing that side effects can be addressed successfully.*
*In patients older than 75 years of age with clinical [[Coronary heart disease|ASCVD]], it is reasonable to initiate moderate or high-intensity [[statin]] therapy after reviewing  [[adverse effects]] and [[Drug interaction|drug interactions]].<ref name="PowersRabinstein20192" /><ref name="SanossianSaver2006">{{cite journal|last1=Sanossian|first1=Nerses|last2=Saver|first2=Jeffrey L.|last3=Liebeskind|first3=David S.|last4=Kim|first4=Doojin|last5=Razinia|first5=Tannaz|last6=Ovbiagele|first6=Bruce|title=Achieving Target Cholesterol Goals After Stroke|journal=Archives of Neurology|volume=63|issue=8|year=2006|pages=1081|issn=0003-9942|doi=10.1001/archneur.63.8.1081}}</ref>
*For patients with [[ischemic stroke]] who qualify for statin treatment, in-hospital initiation of [[statin]] therapy is reasonable.<ref name="SanossianSaver2006">{{cite journal|last1=Sanossian|first1=Nerses|last2=Saver|first2=Jeffrey L.|last3=Liebeskind|first3=David S.|last4=Kim|first4=Doojin|last5=Razinia|first5=Tannaz|last6=Ovbiagele|first6=Bruce|title=Achieving Target Cholesterol Goals After Stroke|journal=Archives of Neurology|volume=63|issue=8|year=2006|pages=1081|issn=0003-9942|doi=10.1001/archneur.63.8.1081}}</ref>*
*Risk and beneffits should be discussed before initiation of statin therapy to weight [[Coronary heart disease|ASCVD]] risk reduction against the potential for statin-associated side effects.<ref name="PowersRabinstein20192" />
*Among patients already taking [[Statins (patient information)|statins]] at the time of onset of [[ischemic stroke]], continuation of statin therapy during the acute period is reasonable.*
*Continuation of statin therapy during the acute period of [[ischemic stroke]] is reasonable among patients already taking [[Statins (patient information)|statins]].


==== Alteplase ====
{| align="center" style="border: 0px; font-size: 90%; margin: 3px;"
|+
'''Summarized management of ischemic stroke'''
! rowspan="2" style="background: #4479BA; width: 200px;" |{{fontcolor|1=#FFF|2=Medical treatment}}
! rowspan="2" style="background: #4479BA; width: 150px;" |{{fontcolor|1=#FFF|2=Drug class}}
! colspan="2" style="background: #4479BA; width: 350px;" |{{fontcolor|1=#FFF|2=Recommendations}}
|-
! style="background: #4479BA; width: 350px;" |{{fontcolor|1=#FFF|2=Acute}}
! style="background: #4479BA; width: 350px;" |{{fontcolor|1=#FFF|2=Long-Term}}
|-
| style="padding: 5px 5px; background: #F5F5F5;" |'''Reperfusion therapy'''
| style="padding: 5px 5px; background: #F5F5F5;" |[[Tissue plasminogen activator|'''Tissue plasminogen activator''']] '''(t-PA)'''
| style="padding: 5px 5px; background: #F5F5F5;" |
*Recommended within 3-4.5 hours of onset of ischemic stroke in eligible patients by guidelines<ref name="pmid233702053">{{cite journal|author=Jauch EC, Saver JL, Adams HP, Bruno A, Connors JJ, Demaerschalk BM et al.|title=Guidelines for the early management of patients with acute ischemic stroke: a guideline for healthcare professionals from the American Heart Association/American Stroke Association.|journal=Stroke|year=2013|volume=44|issue=3|pages=870-947|pmid=23370205|doi=10.1161/STR.0b013e318284056a|pmc=|url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=23370205}}</ref><ref name="pmid 223152732">{{cite journal|author=Lansberg MG, O'Donnell MJ, Khatri P, Lang ES, Nguyen-Huynh MN, Schwartz NE et al.|title=Antithrombotic and thrombolytic therapy for ischemic stroke: Antithrombotic Therapy and Prevention of Thrombosis, 9th ed: American College of Chest Physicians Evidence-Based Clinical Practice Guidelines.|journal=Chest|year=2012|volume=141|issue=2 Suppl|pages=e601S-36S|pmid=22315273|doi=10.1378/chest.11-2302|pmc=3278065|url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=22315273}}</ref><ref>{{cite web|url=http://www.aaem.org/em-resources/position-statements/clinical-practice/thrombolytic-therapy|title=Position Statement on the Use of Intravenous Thrombolytic Therapy in the Treatment of Stroke|publisher=American Academy of Emergency Medicine|accessdate=2008-01-25}}</ref> and [[systematic review]]s<ref name="pmid258716712">{{cite journal|author=Prabhakaran S, Ruff I, Bernstein RA|title=Acute stroke intervention: a systematic review.|journal=JAMA|year=2015|volume=313|issue=14|pages=1451-62|pmid=25871671|doi=10.1001/jama.2015.3058|pmc=|url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=25871671}}</ref><ref name="pmid250725282">{{cite journal|author=Wardlaw JM, Murray V, Berge E, del Zoppo GJ|title=Thrombolysis for acute ischaemic stroke.|journal=Cochrane Database Syst Rev|year=2014|volume=7|issue=|pages=CD000213|pmid=25072528|doi=10.1002/14651858.CD000213.pub3|pmc=4153726|url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=25072528}}</ref><ref name="pmid251060632">{{cite journal|author=Emberson J, Lees KR, Lyden P, Blackwell L, Albers G, Bluhmki E et al.|title=Effect of treatment delay, age, and stroke severity on the effects of intravenous thrombolysis with alteplase for acute ischaemic stroke: a meta-analysis of individual patient data from randomised trials.|journal=Lancet|year=2014|volume=|issue=|pages=|pmid=25106063|doi=10.1016/S0140-6736(14)60584-5|pmc=|url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=25106063}}</ref>
| style="padding: 5px 5px; background: #F5F5F5;" |
*None
|-
| rowspan="2" style="padding: 5px 5px; background: #F5F5F5;" |'''Antithrombotic agents'''
| style="padding: 5px 5px; background: #F5F5F5;" |[[Antiplatelet agents|'''Antiplatelet agents''']]
| style="padding: 5px 5px; background: #F5F5F5;" |
*Oral administration of [[aspirin]] (initial dose is 325 mg) is recommended within 24 to 48 hours after stroke onset in most patients<ref name="pmid233702053" />
*Aspirin is contraindicated in patients with ischemic stroke within 24 hours of t-PA administration<ref name="pmid233702053" />
* DAPT therapy (aspirin and clopidogrel) is recommended for 90 days in patients with symptomatic intracranial large artery disease
| style="padding: 5px 5px; background: #F5F5F5;" |
*Long term therapy with [[clopidogrel]] or  aspirin extended release [[dipyridamole]] may be used for secondary prevention of non cardioembolic stroke
|-
| style="padding: 5px 5px; background: #F5F5F5;" |'''[[Anticoagulants]]'''
| style="padding: 5px 5px; background: #F5F5F5;" |
*Parenteral or oral anticoagulation is not recommended within 48 hours of onset of ischemic stroke<ref name="pmid172046812">{{cite journal  |author=Paciaroni M, Agnelli G, Micheli S, Caso V|title=Efficacy and safety of anticoagulant treatment in acute cardioembolic stroke: a meta-analysis of randomized controlled trials|journal=Stroke|volume=38|issue=2|pages=423-30|year=2007|pmid=17204681|doi=10.1161/01.STR.0000254600.92975.1f}} [http://www.acpjc.org/Content/147/1/issue/ACPJC-2007-147-1-017.htm ACP JC synopsis]</ref>
| style="padding: 5px 5px; background: #F5F5F5;" |
*Oral anticoagulants may be used for secondary prevention of ischemic stroke in patients with atrial fibrillation or other cardioembolic disease<ref name="pmid175770052">{{cite journal |author=Hart RG, Pearce LA, Aguilar MI|title=Meta-analysis: antithrombotic therapy to prevent stroke in patients who have nonvalvular atrial fibrillation|journal=Ann. Intern. Med.|volume=146|issue=12|pages=857-67|year=2007|pmid=17577005|doi=}}</ref>
|-
| style="padding: 5px 5px; background: #F5F5F5;" |'''Antilipid therapy'''
| style="padding: 5px 5px; background: #F5F5F5;" |'''[[Statins]]'''
| style="padding: 5px 5px; background: #F5F5F5;" |
* Among patients already taking statins at the time of onset of ischemic stroke, continuation of statin therapy during the acute period is reasonable<ref name="pmid233702053" />
| style="padding: 5px 5px; background: #F5F5F5;" |
*Long term management of ischemic stroke with high intensity statins may be recommended for patients with atherosclerotic disease
*Patients who cannot tolerate high intensity dose, medium or low intensity statins may prove beneficial
|-
| rowspan="2" style="padding: 5px 5px; background: #F5F5F5;" |'''Antihypertensive therapy'''
| style="padding: 5px 5px; background: #F5F5F5;" |'''Intravenous [[antihypertensives]]'''
'''([[Labetalol|Labetolol]], [[nitroprusside]])'''
| style="padding: 5px 5px; background: #F5F5F5;" |
*Used to control high blood pressure in patients with BP>185/110 mmHg before starting t-PA<ref name="pmid233702053" />
| style="padding: 5px 5px; background: #F5F5F5;" |
*Long term oral antihypertensives may be used after 24 hours of ischemic stroke in patients having history of hypertension
|-
| style="padding: 5px 5px; background: #F5F5F5;" |'''Oral antihypertensive therapy'''
| style="padding: 5px 5px; background: #F5F5F5;" |
*Recommended after 24 hours in patient having [[hypertension]]
| style="padding: 5px 5px; background: #F5F5F5;" |
*Long term oral antihypertensives may be used after 24 hours of ischemic stroke in patients having history of hypertension
|-
| style="padding: 5px 5px; background: #F5F5F5;" |'''Antihyperglycemic agents'''
| style="padding: 5px 5px; background: #F5F5F5;" |'''[[Insulin]]'''
| style="padding: 5px 5px; background: #F5F5F5;" |
*May be used to control blood glucose between range of 140-180 mg/dl since hyperglycemia is associated with worst outcome in patients with acute ischemic stroke<ref name="pmid233702053" />
| style="padding: 5px 5px; background: #F5F5F5;" |
*Long term oral antidiabetic may be used for secondary prevention of ischmeic stroke in patients with [[diabetes mellitus]]
|-
|}
====Alteplase====


*[[Alteplase|IV alteplase]] is recommended for
*[[Alteplase|IV alteplase]] is recommended for


==== Tenecteplase ====
====Tenecteplase====


*[[Tenecteplase]] may be useful in patients with minor [[neurological]] impairment.<ref name="HuangCheripelli2015">{{cite journal|last1=Huang|first1=Xuya|last2=Cheripelli|first2=Bharath Kumar|last3=Lloyd|first3=Suzanne M|last4=Kalladka|first4=Dheeraj|last5=Moreton|first5=Fiona Catherine|last6=Siddiqui|first6=Aslam|last7=Ford|first7=Ian|last8=Muir|first8=Keith W|title=Alteplase versus tenecteplase for thrombolysis after ischaemic stroke (ATTEST): a phase 2, randomised, open-label, blinded endpoint study|journal=The Lancet Neurology|volume=14|issue=4|year=2015|pages=368–376|issn=14744422|doi=10.1016/S1474-4422(15)70017-7}}</ref>
*[[Tenecteplase]] may be useful in patients with minor [[neurological]] impairment.<ref name="HuangCheripelli2015">{{cite journal|last1=Huang|first1=Xuya|last2=Cheripelli|first2=Bharath Kumar|last3=Lloyd|first3=Suzanne M|last4=Kalladka|first4=Dheeraj|last5=Moreton|first5=Fiona Catherine|last6=Siddiqui|first6=Aslam|last7=Ford|first7=Ian|last8=Muir|first8=Keith W|title=Alteplase versus tenecteplase for thrombolysis after ischaemic stroke (ATTEST): a phase 2, randomised, open-label, blinded endpoint study|journal=The Lancet Neurology|volume=14|issue=4|year=2015|pages=368–376|issn=14744422|doi=10.1016/S1474-4422(15)70017-7}}</ref>
*The dose of [[tenecteplase]] is a single IV [[bolus]] of 0.25-mg/kg (maximum 25 mg).<ref name="CampbellMitchell2018">{{cite journal|last1=Campbell|first1=Bruce C.V.|last2=Mitchell|first2=Peter J.|last3=Churilov|first3=Leonid|last4=Yassi|first4=Nawaf|last5=Kleinig|first5=Timothy J.|last6=Dowling|first6=Richard J.|last7=Yan|first7=Bernard|last8=Bush|first8=Steven J.|last9=Dewey|first9=Helen M.|last10=Thijs|first10=Vincent|last11=Scroop|first11=Rebecca|last12=Simpson|first12=Marion|last13=Brooks|first13=Mark|last14=Asadi|first14=Hamed|last15=Wu|first15=Teddy Y.|last16=Shah|first16=Darshan G.|last17=Wijeratne|first17=Tissa|last18=Ang|first18=Timothy|last19=Miteff|first19=Ferdinand|last20=Levi|first20=Christopher R.|last21=Rodrigues|first21=Edrich|last22=Zhao|first22=Henry|last23=Salvaris|first23=Patrick|last24=Garcia-Esperon|first24=Carlos|last25=Bailey|first25=Peter|last26=Rice|first26=Henry|last27=de Villiers|first27=Laetitia|last28=Brown|first28=Helen|last29=Redmond|first29=Kendal|last30=Leggett|first30=David|last31=Fink|first31=John N.|last32=Collecutt|first32=Wayne|last33=Wong|first33=Andrew A.|last34=Muller|first34=Claire|last35=Coulthard|first35=Alan|last36=Mitchell|first36=Ken|last37=Clouston|first37=John|last38=Mahady|first38=Kate|last39=Field|first39=Deborah|last40=Ma|first40=Henry|last41=Phan|first41=Thanh G.|last42=Chong|first42=Winston|last43=Chandra|first43=Ronil V.|last44=Slater|first44=Lee-Anne|last45=Krause|first45=Martin|last46=Harrington|first46=Timothy J.|last47=Faulder|first47=Kenneth C.|last48=Steinfort|first48=Brendan S.|last49=Bladin|first49=Christopher F.|last50=Sharma|first50=Gagan|last51=Desmond|first51=Patricia M.|last52=Parsons|first52=Mark W.|last53=Donnan|first53=Geoffrey A.|last54=Davis|first54=Stephen M.|title=Tenecteplase versus Alteplase before Thrombectomy for Ischemic Stroke|journal=New England Journal of Medicine|volume=378|issue=17|year=2018|pages=1573–1582|issn=0028-4793|doi=10.1056/NEJMoa1716405}}</ref>
*The dose of [[tenecteplase]] is a single IV [[bolus]] of 0.25-mg/kg (maximum 25 mg).<ref name="CampbellMitchell2018">{{cite journal|last1=Campbell|first1=Bruce C.V.|last2=Mitchell|first2=Peter J.|last3=Churilov|first3=Leonid|last4=Yassi|first4=Nawaf|last5=Kleinig|first5=Timothy J.|last6=Dowling|first6=Richard J.|last7=Yan|first7=Bernard|last8=Bush|first8=Steven J.|last9=Dewey|first9=Helen M.|last10=Thijs|first10=Vincent|last11=Scroop|first11=Rebecca|last12=Simpson|first12=Marion|last13=Brooks|first13=Mark|last14=Asadi|first14=Hamed|last15=Wu|first15=Teddy Y.|last16=Shah|first16=Darshan G.|last17=Wijeratne|first17=Tissa|last18=Ang|first18=Timothy|last19=Miteff|first19=Ferdinand|last20=Levi|first20=Christopher R.|last21=Rodrigues|first21=Edrich|last22=Zhao|first22=Henry|last23=Salvaris|first23=Patrick|last24=Garcia-Esperon|first24=Carlos|last25=Bailey|first25=Peter|last26=Rice|first26=Henry|last27=de Villiers|first27=Laetitia|last28=Brown|first28=Helen|last29=Redmond|first29=Kendal|last30=Leggett|first30=David|last31=Fink|first31=John N.|last32=Collecutt|first32=Wayne|last33=Wong|first33=Andrew A.|last34=Muller|first34=Claire|last35=Coulthard|first35=Alan|last36=Mitchell|first36=Ken|last37=Clouston|first37=John|last38=Mahady|first38=Kate|last39=Field|first39=Deborah|last40=Ma|first40=Henry|last41=Phan|first41=Thanh G.|last42=Chong|first42=Winston|last43=Chandra|first43=Ronil V.|last44=Slater|first44=Lee-Anne|last45=Krause|first45=Martin|last46=Harrington|first46=Timothy J.|last47=Faulder|first47=Kenneth C.|last48=Steinfort|first48=Brendan S.|last49=Bladin|first49=Christopher F.|last50=Sharma|first50=Gagan|last51=Desmond|first51=Patricia M.|last52=Parsons|first52=Mark W.|last53=Donnan|first53=Geoffrey A.|last54=Davis|first54=Stephen M.|title=Tenecteplase versus Alteplase before Thrombectomy for Ischemic Stroke|journal=New England Journal of Medicine|volume=378|issue=17|year=2018|pages=1573–1582|issn=0028-4793|doi=10.1056/NEJMoa1716405}}</ref>


==== Antiplatelet therapy ====
====Antiplatelet therapy====


* Administration of [[aspirin]] is recommended in patients with AIS within 24 to 48 hours after onset. For those treated with [[Alteplase|IV alteplase]], aspirin administration is generally delayed until 24 hours later.<ref name="JeongKim2016">{{cite journal|last1=Jeong|first1=Han-Gil|last2=Kim|first2=Beom Joon|last3=Yang|first3=Mi Hwa|last4=Han|first4=Moon-Ku|last5=Bae|first5=Hee-Joon|last6=Lee|first6=Seung-Hoon|title=Stroke outcomes with use of antithrombotics within 24 hours after recanalization treatment|journal=Neurology|volume=87|issue=10|year=2016|pages=996–1002|issn=0028-3878|doi=10.1212/WNL.0000000000003083}}</ref>
*Administration of [[aspirin]] is recommended in patients with AIS within 24 to 48 hours after onset. For those treated with [[Alteplase|IV alteplase]], aspirin administration is generally delayed until 24 hours later.<ref name="JeongKim2016">{{cite journal|last1=Jeong|first1=Han-Gil|last2=Kim|first2=Beom Joon|last3=Yang|first3=Mi Hwa|last4=Han|first4=Moon-Ku|last5=Bae|first5=Hee-Joon|last6=Lee|first6=Seung-Hoon|title=Stroke outcomes with use of antithrombotics within 24 hours after recanalization treatment|journal=Neurology|volume=87|issue=10|year=2016|pages=996–1002|issn=0028-3878|doi=10.1212/WNL.0000000000003083}}</ref>
*The dose of [[aspirin]] is usually between 160-300mg daily.<ref name="pmid9174558">{{cite journal |vauthors= |title=The International Stroke Trial (IST): a randomised trial of aspirin, subcutaneous heparin, both, or neither among 19435 patients with acute ischaemic stroke. International Stroke Trial Collaborative Group |journal=Lancet |volume=349 |issue=9065 |pages=1569–81 |date=May 1997 |pmid=9174558 |doi= |url=}}</ref>
*The dose of [[aspirin]] is usually between 160-300mg daily.<ref name="pmid9174558">{{cite journal |vauthors= |title=The International Stroke Trial (IST): a randomised trial of aspirin, subcutaneous heparin, both, or neither among 19435 patients with acute ischaemic stroke. International Stroke Trial Collaborative Group |journal=Lancet |volume=349 |issue=9065 |pages=1569–81 |date=May 1997 |pmid=9174558 |doi= |url=}}</ref>
*[[Aspirin|IV aspirin]] administration within 90 minutes after the start of [[Alteplase|IV alteplase]] is associated with symptomatic intracranial hemorrhage, for which co administration is discouraged but benefits should be assessed in each individual case.<ref name="PowersRabinstein2019" /><ref name="ZinkstokRoos2012">{{cite journal|last1=Zinkstok|first1=Sanne M|last2=Roos|first2=Yvo B|title=Early administration of aspirin in patients treated with alteplase for acute ischaemic stroke: a randomised controlled trial|journal=The Lancet|volume=380|issue=9843|year=2012|pages=731–737|issn=01406736|doi=10.1016/S0140-6736(12)60949-0}}</ref>
*[[Aspirin|IV aspirin]] administration within 90 minutes after the start of [[Alteplase|IV alteplase]] is associated with symptomatic intracranial hemorrhage, for which co administration is discouraged but benefits should be assessed in each individual case.<ref name="PowersRabinstein20192" /><ref name="ZinkstokRoos2012">{{cite journal|last1=Zinkstok|first1=Sanne M|last2=Roos|first2=Yvo B|title=Early administration of aspirin in patients treated with alteplase for acute ischaemic stroke: a randomised controlled trial|journal=The Lancet|volume=380|issue=9843|year=2012|pages=731–737|issn=01406736|doi=10.1016/S0140-6736(12)60949-0}}</ref>
*[[Dual antiplatelet therapy]] with [[aspirin]] and [[clopidogrel]] (75 mg/d, with a loading dose of 600mg) may be started within 24 hours after [[symptom]] onset and continued for 21 days in patients with no cardioembolic [[ischemic stroke]].<ref name="JohnstonEaston2018">{{cite journal|last1=Johnston|first1=S. Claiborne|last2=Easton|first2=J. Donald|last3=Farrant|first3=Mary|last4=Barsan|first4=William|last5=Conwit|first5=Robin A.|last6=Elm|first6=Jordan J.|last7=Kim|first7=Anthony S.|last8=Lindblad|first8=Anne S.|last9=Palesch|first9=Yuko Y.|title=Clopidogrel and Aspirin in Acute Ischemic Stroke and High-Risk TIA|journal=New England Journal of Medicine|volume=379|issue=3|year=2018|pages=215–225|issn=0028-4793|doi=10.1056/NEJMoa1800410}}</ref>
*[[Dual antiplatelet therapy]] with [[aspirin]] and [[clopidogrel]] (75 mg/d, with a loading dose of 600mg) may be started within 24 hours after [[symptom]] onset and continued for 21 days in patients with no cardioembolic [[ischemic stroke]].<ref name="JohnstonEaston2018">{{cite journal|last1=Johnston|first1=S. Claiborne|last2=Easton|first2=J. Donald|last3=Farrant|first3=Mary|last4=Barsan|first4=William|last5=Conwit|first5=Robin A.|last6=Elm|first6=Jordan J.|last7=Kim|first7=Anthony S.|last8=Lindblad|first8=Anne S.|last9=Palesch|first9=Yuko Y.|title=Clopidogrel and Aspirin in Acute Ischemic Stroke and High-Risk TIA|journal=New England Journal of Medicine|volume=379|issue=3|year=2018|pages=215–225|issn=0028-4793|doi=10.1056/NEJMoa1800410}}</ref>
*[[Aspirin]] should not substitute [[Alteplase|IV alteplase]] or mechanical thrombectomy in patients eligible for these therapies.
*[[Aspirin]] should not substitute [[Alteplase|IV alteplase]] or mechanical thrombectomy in patients eligible for these therapies.<ref name="PowersRabinstein20192" />


===Surgery===
===Surgery===


*The usefulness of emergency carotid endarterectomy, [[carotid]] [[angioplasty]] and stenting in the absence of an intracranial clot is not well established.<ref name="PowersRabinstein2019" />
*The usefulness of emergency carotid endarterectomy, [[carotid]] [[angioplasty]] and stenting in the absence of an intracranial clot is not well established.<ref name="PowersRabinstein20192" />


==== Mechanical thrombectomy with a stent retriever ====
====Mechanical thrombectomy with a stent retriever====


* Mechanical [[thrombectomy]] with stent retrievers is recommended over intra arterial [[fibrinolysis]] as first-line [[therapy]].<ref name="PowersRabinstein2019" />
*Mechanical [[thrombectomy]] with stent retrievers is recommended over intra arterial [[fibrinolysis]] as first-line [[therapy]].<ref name="PowersRabinstein20192" />
* Mechanical [[thrombectomy]] may be useful in selected patients with up to 24 hours of initiation of [[stroke]].<ref name="PowersRabinstein2019" /><ref name="AlbersMarks2018">{{cite journal|last1=Albers|first1=Gregory W.|last2=Marks|first2=Michael P.|last3=Kemp|first3=Stephanie|last4=Christensen|first4=Soren|last5=Tsai|first5=Jenny P.|last6=Ortega-Gutierrez|first6=Santiago|last7=McTaggart|first7=Ryan A.|last8=Torbey|first8=Michel T.|last9=Kim-Tenser|first9=May|last10=Leslie-Mazwi|first10=Thabele|last11=Sarraj|first11=Amrou|last12=Kasner|first12=Scott E.|last13=Ansari|first13=Sameer A.|last14=Yeatts|first14=Sharon D.|last15=Hamilton|first15=Scott|last16=Mlynash|first16=Michael|last17=Heit|first17=Jeremy J.|last18=Zaharchuk|first18=Greg|last19=Kim|first19=Sun|last20=Carrozzella|first20=Janice|last21=Palesch|first21=Yuko Y.|last22=Demchuk|first22=Andrew M.|last23=Bammer|first23=Roland|last24=Lavori|first24=Philip W.|last25=Broderick|first25=Joseph P.|last26=Lansberg|first26=Maarten G.|title=Thrombectomy for Stroke at 6 to 16 Hours with Selection by Perfusion Imaging|journal=New England Journal of Medicine|volume=378|issue=8|year=2018|pages=708–718|issn=0028-4793|doi=10.1056/NEJMoa1713973}}</ref>
*Mechanical [[thrombectomy]] may be useful in selected patients with up to 24 hours of initiation of [[stroke]].<ref name="PowersRabinstein20192" /><ref name="AlbersMarks2018">{{cite journal|last1=Albers|first1=Gregory W.|last2=Marks|first2=Michael P.|last3=Kemp|first3=Stephanie|last4=Christensen|first4=Soren|last5=Tsai|first5=Jenny P.|last6=Ortega-Gutierrez|first6=Santiago|last7=McTaggart|first7=Ryan A.|last8=Torbey|first8=Michel T.|last9=Kim-Tenser|first9=May|last10=Leslie-Mazwi|first10=Thabele|last11=Sarraj|first11=Amrou|last12=Kasner|first12=Scott E.|last13=Ansari|first13=Sameer A.|last14=Yeatts|first14=Sharon D.|last15=Hamilton|first15=Scott|last16=Mlynash|first16=Michael|last17=Heit|first17=Jeremy J.|last18=Zaharchuk|first18=Greg|last19=Kim|first19=Sun|last20=Carrozzella|first20=Janice|last21=Palesch|first21=Yuko Y.|last22=Demchuk|first22=Andrew M.|last23=Bammer|first23=Roland|last24=Lavori|first24=Philip W.|last25=Broderick|first25=Joseph P.|last26=Lansberg|first26=Maarten G.|title=Thrombectomy for Stroke at 6 to 16 Hours with Selection by Perfusion Imaging|journal=New England Journal of Medicine|volume=378|issue=8|year=2018|pages=708–718|issn=0028-4793|doi=10.1056/NEJMoa1713973}}</ref>
* In patients who undergo mechanical [[thrombectomy]],[[blood pressure]] should be maintained below 180/105 mmHg during and for 24 hours after the procedure.<ref name="PowersRabinstein2019" />
*In patients who undergo mechanical [[thrombectomy]],[[blood pressure]] should be maintained below 180/105 mmHg during and for 24 hours after the procedure.<ref name="PowersRabinstein20192" />


* Patients should receive mechanical [[thrombectomy]] with a stent retriever if they meet all the following criteria:<ref name="GoyalMenon2016">{{cite journal|last1=Goyal|first1=Mayank|last2=Menon|first2=Bijoy K|last3=van Zwam|first3=Wim H|last4=Dippel|first4=Diederik W J|last5=Mitchell|first5=Peter J|last6=Demchuk|first6=Andrew M|last7=Dávalos|first7=Antoni|last8=Majoie|first8=Charles B L M|last9=van der Lugt|first9=Aad|last10=de Miquel|first10=Maria A|last11=Donnan|first11=Geoffrey A|last12=Roos|first12=Yvo B W E M|last13=Bonafe|first13=Alain|last14=Jahan|first14=Reza|last15=Diener|first15=Hans-Christoph|last16=van den Berg|first16=Lucie A|last17=Levy|first17=Elad I|last18=Berkhemer|first18=Olvert A|last19=Pereira|first19=Vitor M|last20=Rempel|first20=Jeremy|last21=Millán|first21=Mònica|last22=Davis|first22=Stephen M|last23=Roy|first23=Daniel|last24=Thornton|first24=John|last25=Román|first25=Luis San|last26=Ribó|first26=Marc|last27=Beumer|first27=Debbie|last28=Stouch|first28=Bruce|last29=Brown|first29=Scott|last30=Campbell|first30=Bruce C V|last31=van Oostenbrugge|first31=Robert J|last32=Saver|first32=Jeffrey L|last33=Hill|first33=Michael D|last34=Jovin|first34=Tudor G|title=Endovascular thrombectomy after large-vessel ischaemic stroke: a meta-analysis of individual patient data from five randomised trials|journal=The Lancet|volume=387|issue=10029|year=2016|pages=1723–1731|issn=01406736|doi=10.1016/S0140-6736(16)00163-X}}</ref>  
*Patients should receive mechanical [[thrombectomy]] with a stent retriever if they meet all the following criteria:<ref name="GoyalMenon2016">{{cite journal|last1=Goyal|first1=Mayank|last2=Menon|first2=Bijoy K|last3=van Zwam|first3=Wim H|last4=Dippel|first4=Diederik W J|last5=Mitchell|first5=Peter J|last6=Demchuk|first6=Andrew M|last7=Dávalos|first7=Antoni|last8=Majoie|first8=Charles B L M|last9=van der Lugt|first9=Aad|last10=de Miquel|first10=Maria A|last11=Donnan|first11=Geoffrey A|last12=Roos|first12=Yvo B W E M|last13=Bonafe|first13=Alain|last14=Jahan|first14=Reza|last15=Diener|first15=Hans-Christoph|last16=van den Berg|first16=Lucie A|last17=Levy|first17=Elad I|last18=Berkhemer|first18=Olvert A|last19=Pereira|first19=Vitor M|last20=Rempel|first20=Jeremy|last21=Millán|first21=Mònica|last22=Davis|first22=Stephen M|last23=Roy|first23=Daniel|last24=Thornton|first24=John|last25=Román|first25=Luis San|last26=Ribó|first26=Marc|last27=Beumer|first27=Debbie|last28=Stouch|first28=Bruce|last29=Brown|first29=Scott|last30=Campbell|first30=Bruce C V|last31=van Oostenbrugge|first31=Robert J|last32=Saver|first32=Jeffrey L|last33=Hill|first33=Michael D|last34=Jovin|first34=Tudor G|title=Endovascular thrombectomy after large-vessel ischaemic stroke: a meta-analysis of individual patient data from five randomised trials|journal=The Lancet|volume=387|issue=10029|year=2016|pages=1723–1731|issn=01406736|doi=10.1016/S0140-6736(16)00163-X}}</ref>
*# Pre[[stroke]] mRS score of 0 to 1
*#Pre[[stroke]] mRS score of 0 to 1
*# Causative occlusion of the internal carotid artery or MCA segment 1 (M1)
*#Causative occlusion of the internal carotid artery or MCA segment 1 (M1)
*# Age ≥18 years
*#Age ≥18 years
*#[[National Institutes of Health Stroke Scale|NIHSS]] score of ≥6
*#[[National Institutes of Health Stroke Scale|NIHSS]] score of ≥6
*#[[ASPECT|ASPECTS]] of ≥6; and
*#[[ASPECT|ASPECTS]] of ≥6; and
*#[[Treatment]] can be initiated within 6 hours of [[Symptom|symptom onset]]
*#[[Treatment]] can be initiated within 6 hours of [[Symptom|symptom onset]]


==== Aspiration thrombectomy ====
====Aspiration thrombectomy====


* Aspiration [[thrombectomy]] has not been shown to be inferior to [[stent]] retriever.<ref name="TurkSiddiqui2019" />
*Aspiration [[thrombectomy]] has not been shown to be inferior to [[stent]] retriever.<ref name="TurkSiddiqui20192">{{cite journal|last1=Turk|first1=Aquilla S|last2=Siddiqui|first2=Adnan|last3=Fifi|first3=Johanna T|last4=De Leacy|first4=Reade A|last5=Fiorella|first5=David J|last6=Gu|first6=Eugene|last7=Levy|first7=Elad I|last8=Snyder|first8=Kenneth V|last9=Hanel|first9=Ricardo A|last10=Aghaebrahim|first10=Amin|last11=Woodward|first11=B Keith|last12=Hixson|first12=Harry R|last13=Chaudry|first13=Mohammad I|last14=Spiotta|first14=Alejandro M|last15=Rai|first15=Ansaar T|last16=Frei|first16=Donald|last17=Almandoz|first17=Josser E Delgado|last18=Kelly|first18=Mike|last19=Arthur|first19=Adam|last20=Baxter|first20=Blaise|last21=English|first21=Joey|last22=Linfante|first22=Italo|last23=Fargen|first23=Kyle M|last24=Mocco|first24=J|title=Aspiration thrombectomy versus stent retriever thrombectomy as first-line approach for large vessel occlusion (COMPASS): a multicentre, randomised, open label, blinded outcome, non-inferiority trial|journal=The Lancet|volume=393|issue=10175|year=2019|pages=998–1008|issn=01406736|doi=10.1016/S0140-6736(19)30297-1}}</ref>


* Direct aspiration [[thrombectomy]] as first-pass mechanical [[thrombectomy]] is recommended as noninferior to stent retriever for patients who meet all the following criteria:<ref name="TurkSiddiqui2019">{{cite journal|last1=Turk|first1=Aquilla S|last2=Siddiqui|first2=Adnan|last3=Fifi|first3=Johanna T|last4=De Leacy|first4=Reade A|last5=Fiorella|first5=David J|last6=Gu|first6=Eugene|last7=Levy|first7=Elad I|last8=Snyder|first8=Kenneth V|last9=Hanel|first9=Ricardo A|last10=Aghaebrahim|first10=Amin|last11=Woodward|first11=B Keith|last12=Hixson|first12=Harry R|last13=Chaudry|first13=Mohammad I|last14=Spiotta|first14=Alejandro M|last15=Rai|first15=Ansaar T|last16=Frei|first16=Donald|last17=Almandoz|first17=Josser E Delgado|last18=Kelly|first18=Mike|last19=Arthur|first19=Adam|last20=Baxter|first20=Blaise|last21=English|first21=Joey|last22=Linfante|first22=Italo|last23=Fargen|first23=Kyle M|last24=Mocco|first24=J|title=Aspiration thrombectomy versus stent retriever thrombectomy as first-line approach for large vessel occlusion (COMPASS): a multicentre, randomised, open label, blinded outcome, non-inferiority trial|journal=The Lancet|volume=393|issue=10175|year=2019|pages=998–1008|issn=01406736|doi=10.1016/S0140-6736(19)30297-1}}</ref>  
*Direct aspiration [[thrombectomy]] as first-pass mechanical [[thrombectomy]] is recommended as noninferior to stent retriever for patients who meet all the following criteria:<ref name="TurkSiddiqui20192" />
*# Pre[[stroke]] mRS score of 0 to 1;
*#Pre[[stroke]] mRS score of 0 to 1;
*# Causative occlusion of the internal carotid artery or M1;
*#Causative occlusion of the internal carotid artery or M1;
*# Age ≥18 years;
*#Age ≥18 years;
*#[[National Institutes of Health Stroke Scale|NIHSS]] score of ≥6;
*#[[National Institutes of Health Stroke Scale|NIHSS]] score of ≥6;
*#[[ASPECT|ASPECTS]] ≥6; and
*#[[ASPECT|ASPECTS]] ≥6; and
*#[[Treatment]] initiation within 6 hours of symptom onset.
*#[[Treatment]] initiation within 6 hours of symptom onset.


==== Intra arterial fibrinolysis ====
====Intra arterial fibrinolysis====


* Intra-arterial [[fibrinolysis]] may be initiated within 6 hours of [[stroke]] onset in selected patients in whom [[Alteplase|IV alteplase]] is contraindicated.
*Intra-arterial [[fibrinolysis]] may be initiated within 6 hours of [[stroke]] onset in selected patients in whom [[Alteplase|IV alteplase]] is contraindicated.


=== Other aspects of management ===
===Other aspects of management===


* Volume expansors are not recommended in [[ischemic stroke]].<ref name="PowersRabinstein2019" /><ref name="GulumaLiebeskind2015">{{cite journal|last1=Guluma|first1=Kama Z.|last2=Liebeskind|first2=David S.|last3=Raman|first3=Rema|last4=Rapp|first4=Karen S.|last5=Ernstrom|first5=Karin B.|last6=Alexandrov|first6=Andrei V.|last7=Shahripour|first7=Reza B.|last8=Barlinn|first8=Kristian|last9=Starkman|first9=Sidney|last10=Grunberg|first10=Ileana D.|last11=Hemmen|first11=Thomas M.|last12=Meyer|first12=Brett C.|last13=Alexandrov|first13=Anne W.|title=Feasibility and Safety of Using External Counterpulsation to Augment Cerebral Blood Flow in Acute Ischemic Stroke—The Counterpulsation to Upgrade Forward Flow in Stroke (CUFFS) Trial|journal=Journal of Stroke and Cerebrovascular Diseases|volume=24|issue=11|year=2015|pages=2596–2604|issn=10523057|doi=10.1016/j.jstrokecerebrovasdis.2015.07.013}}</ref>
*Volume expansors are not recommended in [[ischemic stroke]].<ref name="PowersRabinstein20192" /><ref name="GulumaLiebeskind2015">{{cite journal|last1=Guluma|first1=Kama Z.|last2=Liebeskind|first2=David S.|last3=Raman|first3=Rema|last4=Rapp|first4=Karen S.|last5=Ernstrom|first5=Karin B.|last6=Alexandrov|first6=Andrei V.|last7=Shahripour|first7=Reza B.|last8=Barlinn|first8=Kristian|last9=Starkman|first9=Sidney|last10=Grunberg|first10=Ileana D.|last11=Hemmen|first11=Thomas M.|last12=Meyer|first12=Brett C.|last13=Alexandrov|first13=Anne W.|title=Feasibility and Safety of Using External Counterpulsation to Augment Cerebral Blood Flow in Acute Ischemic Stroke—The Counterpulsation to Upgrade Forward Flow in Stroke (CUFFS) Trial|journal=Journal of Stroke and Cerebrovascular Diseases|volume=24|issue=11|year=2015|pages=2596–2604|issn=10523057|doi=10.1016/j.jstrokecerebrovasdis.2015.07.013}}</ref>
* The best head positioning after [[stroke]] is not well established.<ref name="PowersRabinstein2019" /><ref name="AndersonArima2017">{{cite journal|last1=Anderson|first1=Craig S.|last2=Arima|first2=Hisatomi|last3=Lavados|first3=Pablo|last4=Billot|first4=Laurent|last5=Hackett|first5=Maree L.|last6=Olavarría|first6=Verónica V.|last7=Muñoz Venturelli|first7=Paula|last8=Brunser|first8=Alejandro|last9=Peng|first9=Bin|last10=Cui|first10=Liying|last11=Song|first11=Lily|last12=Rogers|first12=Kris|last13=Middleton|first13=Sandy|last14=Lim|first14=Joyce Y.|last15=Forshaw|first15=Denise|last16=Lightbody|first16=C. Elizabeth|last17=Woodward|first17=Mark|last18=Pontes-Neto|first18=Octavio|last19=De Silva|first19=H. Asita|last20=Lin|first20=Ruey-Tay|last21=Lee|first21=Tsong-Hai|last22=Pandian|first22=Jeyaraj D.|last23=Mead|first23=Gillian E.|last24=Robinson|first24=Thompson|last25=Watkins|first25=Caroline|title=Cluster-Randomized, Crossover Trial of Head Positioning in Acute Stroke|journal=New England Journal of Medicine|volume=376|issue=25|year=2017|pages=2437–2447|issn=0028-4793|doi=10.1056/NEJMoa1615715}}</ref>
*The best head positioning after [[stroke]] is not well established.<ref name="PowersRabinstein20192" /><ref name="AndersonArima2017">{{cite journal|last1=Anderson|first1=Craig S.|last2=Arima|first2=Hisatomi|last3=Lavados|first3=Pablo|last4=Billot|first4=Laurent|last5=Hackett|first5=Maree L.|last6=Olavarría|first6=Verónica V.|last7=Muñoz Venturelli|first7=Paula|last8=Brunser|first8=Alejandro|last9=Peng|first9=Bin|last10=Cui|first10=Liying|last11=Song|first11=Lily|last12=Rogers|first12=Kris|last13=Middleton|first13=Sandy|last14=Lim|first14=Joyce Y.|last15=Forshaw|first15=Denise|last16=Lightbody|first16=C. Elizabeth|last17=Woodward|first17=Mark|last18=Pontes-Neto|first18=Octavio|last19=De Silva|first19=H. Asita|last20=Lin|first20=Ruey-Tay|last21=Lee|first21=Tsong-Hai|last22=Pandian|first22=Jeyaraj D.|last23=Mead|first23=Gillian E.|last24=Robinson|first24=Thompson|last25=Watkins|first25=Caroline|title=Cluster-Randomized, Crossover Trial of Head Positioning in Acute Stroke|journal=New England Journal of Medicine|volume=376|issue=25|year=2017|pages=2437–2447|issn=0028-4793|doi=10.1056/NEJMoa1615715}}</ref>


* Supplemental [[oxygen]] and [[mechanical ventilation]] support should be provided when necessary to maintain [[oxygen saturation]] higher than 93%.<ref name="PowersRabinstein2019" /><ref name="RoffeNevatte2017">{{cite journal|last1=Roffe|first1=Christine|last2=Nevatte|first2=Tracy|last3=Sim|first3=Julius|last4=Bishop|first4=Jon|last5=Ives|first5=Natalie|last6=Ferdinand|first6=Phillip|last7=Gray|first7=Richard|title=Effect of Routine Low-Dose Oxygen Supplementation on Death and Disability in Adults With Acute Stroke|journal=JAMA|volume=318|issue=12|year=2017|pages=1125|issn=0098-7484|doi=10.1001/jama.2017.11463}}</ref>
*Supplemental [[oxygen]] and [[mechanical ventilation]] support should be provided when necessary to maintain [[oxygen saturation]] higher than 93%.<ref name="PowersRabinstein20192" /><ref name="RoffeNevatte2017">{{cite journal|last1=Roffe|first1=Christine|last2=Nevatte|first2=Tracy|last3=Sim|first3=Julius|last4=Bishop|first4=Jon|last5=Ives|first5=Natalie|last6=Ferdinand|first6=Phillip|last7=Gray|first7=Richard|title=Effect of Routine Low-Dose Oxygen Supplementation on Death and Disability in Adults With Acute Stroke|journal=JAMA|volume=318|issue=12|year=2017|pages=1125|issn=0098-7484|doi=10.1001/jama.2017.11463}}</ref>


*Sources of [[hyperthermia]] (>38°C) should be identified and treated with [[Antipyretic|antipyretics]] in patients with [[stroke]].<ref name="PowersRabinstein2019" /><ref name="SaxenaYoung2015">{{cite journal|last1=Saxena|first1=Manoj|last2=Young|first2=Paul|last3=Pilcher|first3=David|last4=Bailey|first4=Michael|last5=Harrison|first5=David|last6=Bellomo|first6=Rinaldo|last7=Finfer|first7=Simon|last8=Beasley|first8=Richard|last9=Hyam|first9=Jonathan|last10=Menon|first10=David|last11=Rowan|first11=Kathryn|last12=Myburgh|first12=John|title=Early temperature and mortality in critically ill patients with acute neurological diseases: trauma and stroke differ from infection|journal=Intensive Care Medicine|volume=41|issue=5|year=2015|pages=823–832|issn=0342-4642|doi=10.1007/s00134-015-3676-6}}</ref>
*Sources of [[hyperthermia]] (>38°C) should be identified and treated with [[Antipyretic|antipyretics]] in patients with [[stroke]].<ref name="PowersRabinstein20192" /><ref name="SaxenaYoung2015">{{cite journal|last1=Saxena|first1=Manoj|last2=Young|first2=Paul|last3=Pilcher|first3=David|last4=Bailey|first4=Michael|last5=Harrison|first5=David|last6=Bellomo|first6=Rinaldo|last7=Finfer|first7=Simon|last8=Beasley|first8=Richard|last9=Hyam|first9=Jonathan|last10=Menon|first10=David|last11=Rowan|first11=Kathryn|last12=Myburgh|first12=John|title=Early temperature and mortality in critically ill patients with acute neurological diseases: trauma and stroke differ from infection|journal=Intensive Care Medicine|volume=41|issue=5|year=2015|pages=823–832|issn=0342-4642|doi=10.1007/s00134-015-3676-6}}</ref>
*[[Hypoglycemia]] (<60 mg/dL) should be treated in the acute setting in patients with [[ischemic stroke]].<ref name="PowersRabinstein2019" />
*[[Hypoglycemia]] (<60 mg/dL) should be treated in the acute setting in patients with [[ischemic stroke]].<ref name="PowersRabinstein20192" />
*[[Blood pressure]] ≥220/120 in patients who did not receive [[Tissue plasminogen activator|TPA]] should be treated within the first 48 to 72 hours after the onset of [[ischemic stroke]].<ref name="SchraderLüders2003">{{cite journal|last1=Schrader|first1=Joachim|last2=Lüders|first2=Stephan|last3=Kulschewski|first3=Anke|last4=Berger|first4=Jürgen|last5=Zidek|first5=Walter|last6=Treib|first6=Johannes|last7=Einhäupl|first7=Karl|last8=Diener|first8=Hans Christoph|last9=Dominiak|first9=Peter|title=The ACCESS Study|journal=Stroke|volume=34|issue=7|year=2003|pages=1699–1703|issn=0039-2499|doi=10.1161/01.STR.0000075777.18006.89}}</ref>
*[[Blood pressure]] ≥220/120 in patients who did not receive [[Tissue plasminogen activator|TPA]] should be treated within the first 48 to 72 hours after the onset of [[ischemic stroke]].<ref name="SchraderLüders2003">{{cite journal|last1=Schrader|first1=Joachim|last2=Lüders|first2=Stephan|last3=Kulschewski|first3=Anke|last4=Berger|first4=Jürgen|last5=Zidek|first5=Walter|last6=Treib|first6=Johannes|last7=Einhäupl|first7=Karl|last8=Diener|first8=Hans Christoph|last9=Dominiak|first9=Peter|title=The ACCESS Study|journal=Stroke|volume=34|issue=7|year=2003|pages=1699–1703|issn=0039-2499|doi=10.1161/01.STR.0000075777.18006.89}}</ref>
*[[Enteral feeding]] should be started within 7 days of admission after an acute [[stroke]] when there is no [[Contraindication|contraindications]].<ref name="pmid16409880">{{cite journal |vauthors=Dennis M, Lewis S, Cranswick G, Forbes J |title=FOOD: a multicentre randomised trial evaluating feeding policies in patients admitted to hospital with a recent stroke |journal=Health Technol Assess |volume=10 |issue=2 |pages=iii–iv, ix–x, 1–120 |date=January 2006 |pmid=16409880 |doi=10.3310/hta10020 |url=}}</ref>
*[[Enteral feeding]] should be started within 7 days of admission after an acute [[stroke]] when there is no [[Contraindication|contraindications]].<ref name="pmid16409880">{{cite journal |vauthors=Dennis M, Lewis S, Cranswick G, Forbes J |title=FOOD: a multicentre randomised trial evaluating feeding policies in patients admitted to hospital with a recent stroke |journal=Health Technol Assess |volume=10 |issue=2 |pages=iii–iv, ix–x, 1–120 |date=January 2006 |pmid=16409880 |doi=10.3310/hta10020 |url=}}</ref>
*[[Psychological]] screening is always recommended to exclude poststroke depression.<ref name="MeaderMoe-Byrne2013">{{cite journal|last1=Meader|first1=N.|last2=Moe-Byrne|first2=T.|last3=Llewellyn|first3=A.|last4=Mitchell|first4=A. J.|title=Screening for poststroke major depression: a meta-analysis of diagnostic validity studies|journal=Journal of Neurology, Neurosurgery & Psychiatry|volume=85|issue=2|year=2013|pages=198–206|issn=0022-3050|doi=10.1136/jnnp-2012-304194}}</ref>
*[[Psychological]] screening is always recommended to exclude poststroke depression.<ref name="MeaderMoe-Byrne2013">{{cite journal|last1=Meader|first1=N.|last2=Moe-Byrne|first2=T.|last3=Llewellyn|first3=A.|last4=Mitchell|first4=A. J.|title=Screening for poststroke major depression: a meta-analysis of diagnostic validity studies|journal=Journal of Neurology, Neurosurgery & Psychiatry|volume=85|issue=2|year=2013|pages=198–206|issn=0022-3050|doi=10.1136/jnnp-2012-304194}}</ref>
*Early [[Rehabilitation counseling|rehabilitation]] in patients with [[stroke]] is adviced.<ref name="PowersRabinstein2019" />
*Early [[Rehabilitation counseling|rehabilitation]] in patients with [[stroke]] is adviced.<ref name="PowersRabinstein20192" />


=== Primary Prevention ===
===Primary Prevention===


*There is currently no [[vaccine]] to prevent [[COVID-19]]. The best way to prevent [[infection]] is to avoid being exposed to this [[virus]].
*There is currently no [[vaccine]] to prevent [[COVID-19]]. The best way to prevent [[infection]] is to avoid being exposed to this [[virus]].
Line 971: Line 784:


===Secondary Prevention===
===Secondary Prevention===
*[[Smoking cessation]] should be highly encouraged in patients who suffered from [[stroke]], behavioral interventions and [[Nicotine replacement therapy|nicotine replacement]] may be necessary.
*[[Smoking cessation]] should be highly encouraged in patients who suffered from [[stroke]], behavioral interventions and [[Nicotine replacement therapy|nicotine replacement]] may be necessary.


To view treatment of COVID-19 section, click [[COVID-19 medical therapy|here]].
==References==
==References==
{{reflist|2}}
{{reflist|2}}
[[Category:Up-To-Date]]


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Latest revision as of 04:08, 24 September 2021

WikiDoc Resources for COVID-19-associated stroke

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Parul Pahal, M.B.B.S[2], Moises Romo M.D. Fahimeh Shojaei, M.D.

Synonyms and keywords: COVID-19, SARS-CoV-2, stroke, CT scan, cerebrovascular disease, TPA, alteplase


Overview

Cerebral hemorrhage or cerebral ischemia disrupts cerebral perfusion and can lead to an acute neurologic condition, called stroke. Cerebrovascular complications have been reported in severe Coronavirus Disease 2019 (COVID-19). However, neurological complications are not very common in rapidly spreading COVID-19 which is caused by a novel coronavirus, severe acute respiratory syndrome coronavirus-2 (SARS-CoV-2). The presenting complaints in majority of stroke patients reported in different studies were respiratory complaints (shortness of breath, cough) and non-specific constitutional symptoms such as fever, malaise, etc., and stroke developed later in the course of the disease. This is thought to be due to COVID-19-associated coagulopathy. However, there are few case reports and studies that have mentioned specific neurological presenting complaints such as altered mental status, limb weakness, and aphasia. Various non-pulmonary features are being reported as the COVID-19 understanding is unfolding with the spike of cases and continuously rising number of cases globally.

To view general COVID-19 section, click here.

Historical Perspective

  • Stroke was first recognized by Hippocrates, in the fourth century BC, almost 2,400 years ago, and it was reffered to as Apoplexy, a Greek medical literature term, which means 'struk down by violence'. Later, renaissance anatomists, in mid-16th century A.D., explained the pathophysiology of stroke, differentiating the causes as bleeding or blockage of A cerebral artery.[1]
  • Mao et al., in his study, first reported neurological symptoms in COVID-19 patients hospitalized in Wuhan, China from January 16, 2020, to February 19, 2020. Neurological symptoms were reported in 78 patients out of 214 COVID-19 positive hospitalized patients with COVID-19 in Wuhan, China. The stroke patients reported specifically were 14[2]. In this study, patients with cardiovascular risk factors who presented with severe systemic symptoms were at higher risk of stroke.
  • Yaghi et al. retrospectively examined stroke patients admitted across different locations of NYU Langone hospital in New York. In this study, the incidence of 0.9% was observed in laboratory confirmed COVID-19 positive patients included in this study. Stroke diagnosis was proved by imaging, and cryptogenic stroke was seen in most of these patients. The mortality was much higher in stroke patients who were COVID-19 positive.[3]

To view historical perspective of COVID-19 section, click here.

Classification

  • There is no specific classification established for 'Stroke in COVID-19 patients'.
  • It is same as the general classification of stroke.[1]


To view classification of COVID-19 section, click here.

Pathophysiology

  • Further investigations should be done to better understand the mechanism of Stroke in patients with COVID-19.

To view pathophysiology COVID-19 section, click here.

Causes

Differentiating COVID-19-associated stroke from other Diseases

  • For further information about the differential diagnosis, click here.
  • To view the differential diagnosis of COVID-19, click here.

Epidemiology and Demographics

Prevalence of stroke in patients with COVID-19
Date of publication Country Author Number of patients Severe infection Neurological symptoms Acute Cerebrovascular disease Ischemic/Hemorrhagic Stroke
April 10, 2020 Wuhan, China Mao et al.[2] 214 88 patients (41.1%), Mean age-58.2 years 78 patients (36.4%) 5 among severe [5.7%] infection group vs 1 [0.8%]) in non-severe group Ischemic-4, Hemorrhagic-1
May 29, 2020 Wuhan, China Qin et al.[15] (Retrospective cohort study) 1875 461 severe on admission 50 patients ie. 15 among severe and 35 among mild on admission (Median age-70 years), 30 males and 20 females Ischemic-90%, Hemorrhagic-10%
May 20, 2020 New York Yaghi et al.[3] (Retrospective cohort study) 3556 Stroke at the time of admission-14/32 (43.8%), eventually developed stroke during hospitalization-18 (56.2%) 32 patients (0.9%) Ischemic stroke- 32
April 28, 2020 New York city Oxley et al.[16] 5 Large vessel stroke-5, Mean age-<50 years
July 12, 2020 New York Valderrama et al. 1 (52-year old male) Ischemic stroke
Prevalence of COVID-19-associated stroke varies in different studies


  • A New York study published in May reported that the proportion of these strokes seem to be higher in younger men.[3] Most of these strokes are large vessel ischemic strokes and are catastrophic.
  • In a single center retrospective study conducted in Wuhan by Qin C. et al. which included 1875 laboratory-confirmed COVID-19 patients from january 27th, 2020, to March 5th, 2020, 50 patients had history of stroke. The median age of this study group was 63 years, with stroke patients relatively older(70 years) when compared to non-stroke patients (62 years).[15]
  • Stroke is one of the neurological manifestations in patients with severe infection. There is limited information on COVID-19 patients with stroke who survived.

To view epidemiology and demographics of COVID-19 section, click here.

Risk Factors

  • According to one of the study conducted in New York, Stroke in COVID-19 infected patients is seen in relatively young patients as compared to with non COVID-19 patients.[3]
  • However, due to disparities in the stroke prevalence in different studies, no clear association has been established.


To view risk factors of COVID-19 section, click here.

Screening


To view screening of COVID-19 section, click here.

Natural History, Complications, and Prognosis


To view natural history, complications and prognosis of COVID-19 section, click here.

Diagnosis

Diagnostic Study of Choice

History and Symptoms

  • The majority of patients with COVID-19-associated stroke initially presented with respiratory symptoms (e.g. cough, shortness of breath etc) and constitutional features. These patients developed cerebrovascular signs and symptoms later in the course of disease.
  • The following table summarizes the signs and symptoms found in 5 patients with COVID-19 infection that later acquiered a stroke:[24][25]
Patient no. Onset of neurologic symptoms
Age and Gender
Neurologic Signs & Symptoms
1 On Admission 73-year old, Male Respiratory distress, fever, and altered mental status [24]
2 On Admission 83-year old, Female Fever, slurring of speech, facial droop, and reduced oral intake [24]
3 On Admission 80-year old female Left sided weakness, altered mental status, one week history of frequent falls [24]
4 On Admission 88-year old, Female An 15 minute episode of weakness and numbness of right arm and word finding difficulty [24]
5 On Admission 58-year old, Male Dense Right-sided weakness and acute onset aphasia [25]
Reported cases of patients with COVID-19 infection and symptoms suggestive of stroke.

Most common symptoms

Less common symptoms

Physical Examination

Physical examination of patients with stroke depending on vessel involved
Vessel involved Physical examination
Anterior cerebral artery [26][27]
Middle cerebral artery[31]
  • Most common site of infarction
Posterior cerebral artery[38][39][40][41][40][42]
Vertebrobasilar artery[46] Midbrain
  • Contralateral decreased motor strength
  • Deviation of eye downwards and outwards-ipsilateral 3rd nerve palsy
Medulla
  • Impaired gag reflex
  • Uvula deviated to the opposite side of lesion
  • Ptosis
  • Miosis
  • Enophthalmos
  • Ipsilateral impaired pain, touch and temperature sensation on the upper half of the face
  • Contralateral decreased motor strength and sensory loss
  • Romberg's sign
  • Deviation of the tongue to the side of the lesion-hypoglossal nerve
  • Contralateral decreased motor strength
  • Contralateral loss of position sense, vibration and two point discrimination
Pons
Cerebellum


National Institutes of Health Stroke Scale (NIHSS)
Tested item Title Response and score
1A Level of consciousness 0—Alert
1—Drowsy
2—Obtunded
3—Coma/unresponsive
1B Orientation questions (2) 0—Answers both correctly
1—Answers 1 correctly
2—Answers neither correctly
2 Gaze 0—Normal horizontal movements
1—Partial gaze palsy
2—Complete gaze palsy
3 Visual fields 0—No visual field defect
1—Partial hemianopia
2—Complete hemianopia
3—Bilateral hemianopia
4 Facial movement 0—Normal
1—Minor facial weakness
2—Partial facial weakness
3—Complete unilateral palsy
5 Motor function (arm)

a. Left

b. Right

0—No drift
1—Drift before 10 s
2—Falls before 10 s
3—No effort against gravity
4—No movement
6 Motor function (leg)

a. Left

b. Right

0—No drift
1—Drift before 5 s
2—Falls before 5 s
3—No effort against gravity
4—No movement
7 Limb ataxia 0—No ataxia
1—Ataxia in 1 limb
2—Ataxia in 2 limbs
8 Sensory 0—No sensory loss
1—Mild sensory loss
2—Severe sensory loss
9 Language 0—Norma
1—Mild aphasia
2—Severe aphasia
3—Mute or global aphasia
10 Articulation of words 0—Norma
1—Mild dysarthria
2—Severe dysarthria
11 Extinction or inattention 0—Absent
1—Mild loss (1 sensory modality lost)
2—Severe loss (2 modalities lost)
Adapted from Lyden et al., 1994[57] American Heart Association, Inc.
  • The pre-stroke Modified Rankin Score (mRS) is an estimated score used to assess the patient’s pre-stroke level of function. An estimated mRS should be abstracted from current medical record documentation about the patient’s ability to perform activities of daily living prior to the hospitalization for the acute ischemic stroke event.[58]
Alberta stroke program early CT score (ASPECTS)
Area affected Score
Subganglionic Nuclei: M1 - Frontal operculum   1
M2 - Anterior temporal lobe 1
M3 - Posterior temporal lobe 1
Supraganglionic Nuclei: M4  - Anterior MCA    1
M5  - Lateral MCA   1
M6  - Posterior MCA    1
Basal Ganglia: C - Caudate 1
L - Lentiform Nucleus     1
I - Insula 1
IC - Internal Capsule 1
Adapted from The University of Calgary ASPECT score in Accute stroke, 2020[59]
Pre-Stroke Modified Rankin Score (mRS)
Score Item tested
0 The patient had no residual symptoms.
1 The patient had no significant disability; able to carry out all activities.
2 The patient had slight disability; unable to carry out all activities but able to look after self without daily help.
3 The patient had moderate disability; requiring some external help but able to walk without the assistance of another individual.
4 The patient had moderately severe disability; unable to walk or attend to bodily functions without assistance of another individual.
5 The patient had severe disability; bedridden, incontinent, requires continuous care.
6 Unable to determine (UTD) from the medical record documentation.
Adapted from Specifications Manual for Joint Commission National Quality Measures, 2018[58]


Laboratory Findings

  • Patients with stroke associated to COVID-19 will have a positive test for COVID-19 confirmed either through molecular tests, nucleic acid amplification test, or serological testing.

Ultrasound

X-ray

  • Head x-rays can help rule out foreign metal objects in the head before performing an MRI,[65] detect skull fractures, and identify intracranial calcifications that may serve as hallmarks for brain structural changes in countries with poor access to more specific imaging tests.
  • There is no evidence of usefulness of chest x-ray in the acute setting of stroke.[18]

CT scan

MRI

  • MRI of the head before IV alteplase administration to exclude microbleeds is not recommended.[18]
  • Multimodal MRI of the head should be done in patients who present within 24 hours of the initiation of symptoms.[66]
  • In patients who wake up with clinical symptoms of stroke of unknown onset (more than 3 hours?), an MRI with diffusion-positive FLAIR may be useful for selecting those who can benefit from IV alteplase administration.[18]

Electrocardiogram


  • To view diagnosis of COVID-19 section, click here.

Treatment

Early assesment

  • The initial assesment goals of ischemic stroke may include the following:[74]
 
 
 
1) Airway

2) Breathing

3) Circulation
 
1) O2 administration at SpO2<94%

2) Ventilatory assisstance is provided to patients who have difficulty breathting

3) IV fluids or vasopressors are given to maintain hemodynamic stability
 
 
 
 
 
 
 
 
 
Early Diagnosis
 
History and PE

1) Help assess the severity of neurological deficit
2) Give clue to the underlying cause

3) Determine the site of infarction
 
Initial diagnostic tests

1) Noncontrast brain CT or brain MRI
2) Blood glucose
3) Oxygen saturation
4) Serum electrolytes/renal function tests
5) Complete blood count, including platelet count
6) Markers of cardiac ischemia
7) Prothrombin time/INR
8) Activated partial thromboplastin time

9) ECG
 
 
 
 
 
 
Early assessment of ischemic stroke
 
 
 
 
Reperfusion therapy
 
Medical
r-tPA in eligible patients within 3-4.5 hours of onset of symptoms
 
Surgical
 
 
 
 
 
 
 
 
 
 
 
Symptomatic relief
 
1) Fever
2) Headache
3) Shortness of breath
 
 
 
 
 
 
 
 
Prognosis
 
1)NIHSS scoring
2)Glassgow coma scale
 
 
 

Medical therapy

  • The reported cases of treatment for COVID-19-associated stroke have followed the same guidelines as patients with no COVID-19 infection. The following recommendations are mainly based on the current guidelines of management for stroke of the AHA 2019.
  • IV alteplase is always preferred over mechanical thrombectomy when there are no contraindications.[75]
  • The usefulness of anticoagulants such as thrombin inhibitors (dabigatran) and factor Xa inhibitors (rivaroxaban, apixaban, edoxaban) is not well established in the acute setting of stroke.[76]
  • The use of thrombolysis via ultrasound waves concomitant to IV fibrinolysis is not recommended.[77]
  • High-intensity statin therapy should be initiated in patients younger than 75 with clinical ASCVD, to achieving a reduction in LDL-C levels of at least 50%.
  • In patients older than 75 years of age with clinical ASCVD, it is reasonable to initiate moderate or high-intensity statin therapy after reviewing adverse effects and drug interactions.[18][78]
  • Risk and beneffits should be discussed before initiation of statin therapy to weight ASCVD risk reduction against the potential for statin-associated side effects.[18]
  • Continuation of statin therapy during the acute period of ischemic stroke is reasonable among patients already taking statins.
Summarized management of ischemic stroke
Medical treatment Drug class Recommendations
Acute Long-Term
Reperfusion therapy Tissue plasminogen activator (t-PA)
  • None
Antithrombotic agents Antiplatelet agents
  • Oral administration of aspirin (initial dose is 325 mg) is recommended within 24 to 48 hours after stroke onset in most patients[79]
  • Aspirin is contraindicated in patients with ischemic stroke within 24 hours of t-PA administration[79]
  • DAPT therapy (aspirin and clopidogrel) is recommended for 90 days in patients with symptomatic intracranial large artery disease
  • Long term therapy with clopidogrel or aspirin extended release dipyridamole may be used for secondary prevention of non cardioembolic stroke
Anticoagulants
  • Parenteral or oral anticoagulation is not recommended within 48 hours of onset of ischemic stroke[85]
  • Oral anticoagulants may be used for secondary prevention of ischemic stroke in patients with atrial fibrillation or other cardioembolic disease[86]
Antilipid therapy Statins
  • Among patients already taking statins at the time of onset of ischemic stroke, continuation of statin therapy during the acute period is reasonable[79]
  • Long term management of ischemic stroke with high intensity statins may be recommended for patients with atherosclerotic disease
  • Patients who cannot tolerate high intensity dose, medium or low intensity statins may prove beneficial
Antihypertensive therapy Intravenous antihypertensives

(Labetolol, nitroprusside)

  • Used to control high blood pressure in patients with BP>185/110 mmHg before starting t-PA[79]
  • Long term oral antihypertensives may be used after 24 hours of ischemic stroke in patients having history of hypertension
Oral antihypertensive therapy
  • Long term oral antihypertensives may be used after 24 hours of ischemic stroke in patients having history of hypertension
Antihyperglycemic agents Insulin
  • May be used to control blood glucose between range of 140-180 mg/dl since hyperglycemia is associated with worst outcome in patients with acute ischemic stroke[79]
  • Long term oral antidiabetic may be used for secondary prevention of ischmeic stroke in patients with diabetes mellitus

Alteplase

Tenecteplase

Antiplatelet therapy

  • Administration of aspirin is recommended in patients with AIS within 24 to 48 hours after onset. For those treated with IV alteplase, aspirin administration is generally delayed until 24 hours later.[95]
  • The dose of aspirin is usually between 160-300mg daily.[96]
  • IV aspirin administration within 90 minutes after the start of IV alteplase is associated with symptomatic intracranial hemorrhage, for which co administration is discouraged but benefits should be assessed in each individual case.[18][97]
  • Dual antiplatelet therapy with aspirin and clopidogrel (75 mg/d, with a loading dose of 600mg) may be started within 24 hours after symptom onset and continued for 21 days in patients with no cardioembolic ischemic stroke.[98]
  • Aspirin should not substitute IV alteplase or mechanical thrombectomy in patients eligible for these therapies.[18]

Surgery

  • The usefulness of emergency carotid endarterectomy, carotid angioplasty and stenting in the absence of an intracranial clot is not well established.[18]

Mechanical thrombectomy with a stent retriever

  • Patients should receive mechanical thrombectomy with a stent retriever if they meet all the following criteria:[100]
    1. Prestroke mRS score of 0 to 1
    2. Causative occlusion of the internal carotid artery or MCA segment 1 (M1)
    3. Age ≥18 years
    4. NIHSS score of ≥6
    5. ASPECTS of ≥6; and
    6. Treatment can be initiated within 6 hours of symptom onset

Aspiration thrombectomy

  • Direct aspiration thrombectomy as first-pass mechanical thrombectomy is recommended as noninferior to stent retriever for patients who meet all the following criteria:[101]
    1. Prestroke mRS score of 0 to 1;
    2. Causative occlusion of the internal carotid artery or M1;
    3. Age ≥18 years;
    4. NIHSS score of ≥6;
    5. ASPECTS ≥6; and
    6. Treatment initiation within 6 hours of symptom onset.

Intra arterial fibrinolysis

Other aspects of management

Primary Prevention

Secondary Prevention

To view treatment of COVID-19 section, click here.

References

  1. 1.0 1.1 Theofanidis, Dimitrios (2015). "From Apoplexy to Brain Attack, a Historical Perspective on Stroke to Date". Journal of Nursing & Care. 04 (01). doi:10.4172/2167-1168.1000e121. ISSN 2167-1168.
  2. 2.0 2.1 2.2 2.3 Mao, Ling; Jin, Huijuan; Wang, Mengdie; Hu, Yu; Chen, Shengcai; He, Quanwei; Chang, Jiang; Hong, Candong; Zhou, Yifan; Wang, David; Miao, Xiaoping; Li, Yanan; Hu, Bo (2020). "Neurologic Manifestations of Hospitalized Patients With Coronavirus Disease 2019 in Wuhan, China". JAMA Neurology. 77 (6): 683. doi:10.1001/jamaneurol.2020.1127. ISSN 2168-6149.
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