Middle East respiratory syndrome coronavirus infection medical therapy: Difference between revisions

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==Overview==
==Overview==
No specific treatment for [[MERS-CoV]] infection is currently available. Clinical management includes supportive management of complications and implementation of recommended infection prevention and  control measures.
Antiviral therapy against MERS-CoV is not yet recommended. Supportive care is the mainstay of management of MERS-CoV. Monitoring for and early management of MERS-CoV-associated complications is also important.


==Medical Therapy==
==Medical Therapy==
[[MERS]] represents a great challenge in terms of treatment because it is caused by a relatively novel [[virus]] to which there is no approved therapy yet. According to
According to the ''International Severe Acute Respiratory & Emerging Infection Consortium'' from the ISARIC and the ''Interim Guidance Document'' from the [[WHO]], supportive medical care is the mainstay of management of [[MERS-CoV]].<ref name=WHO>{{cite web | title = Clinical management of severe acute respiratory infections when novel coronavirus is suspected: What to do and what not to do | url = http://www.who.int/csr/disease/coronavirus_infections/InterimGuidance_ClinicalManagement_NovelCoronavirus_11Feb13u.pdf }}</ref><ref name=ISARIC>{{cite web | title =  
the ''International Severe Acute Respiratory & Emerging Infection Consortium'' (ISARIC), supportive medical care continues to be the approved treatment for [[MERS]]. The search for broad-spectrum inhibitors aiming to minimize the impact of [[coronavirus]] [[infection]] remains the major goal. Recent studies are showing the potential use of other [[drugs]] and therapies to treat the [[MERS-CoV]], which are based on the experience of treatment of other [[coronaviruses]] like the [[SARS virus]]. This repurposing of [[drugs]] has advantages such as: better availability, lower cost and known safety and tolerability profiles. However, lack of evidence makes these new therapies uncertain.<ref name="pmid24841273">{{cite journal| author=Dyall J, Coleman CM, Hart BJ, Venkataraman T, Holbrook MR, Kindrachuk J et al.| title=Repurposing of clinically developed drugs for treatment of Middle East Respiratory Coronavirus Infection. | journal=Antimicrob Agents Chemother | year= 2014 | volume=  | issue=  | pages=  | pmid=24841273 | doi=10.1128/AAC.03036-14 | pmc= | url=http://www.hpa.org.uk/webc/HPAwebFile/HPAweb_C/1317139281416 }} </ref>
Treatment of MERS-CoV: Decision Support Tool | url = http://www.hpa.org.uk/webc/HPAwebFile/HPAweb_C/1317139281416 }}</ref>


Cell and animal studies have shown conflicting results: the combination of [[ribavirin]] with [[Interferon-α|interferon α]]-2b in a cell study reduced [[viral replication]]<ref name="pmid23594967">{{cite journal| author=Falzarano D, de Wit E, Martellaro C, Callison J, Munster VJ, Feldmann H| title=Inhibition of novel β coronavirus replication by a combination of interferon-α2b and ribavirin. | journal=Sci Rep | year= 2013 | volume= 3 | issue=  | pages= 1686 | pmid=23594967 | doi=10.1038/srep01686 | pmc=PMC3629412 | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=23594967  }} </ref>; another study in rhesus monkeys with combination of [[intramuscular]] [[ribavirin]] and [[Interferon-α|interferon α-2b]], the group that received the treatment did not develop [[breathing]] abnormalities nor [[radiographic]] evidence of [[pneumonia]]<ref name="pmid24013700">{{cite journal| author=Falzarano D, de Wit E, Rasmussen AL, Feldmann F, Okumura A, Scott DP et al.| title=Treatment with interferon-α2b and ribavirin improves outcome in MERS-CoV-infected rhesus macaques. | journal=Nat Med | year= 2013 | volume= 19 | issue= 10 | pages= 1313-7 | pmid=24013700 | doi=10.1038/nm.3362 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=24013700  }} </ref>; however, when tried in 5 critically ill patients in Saudi Arabia, this combination was inefficient in all cases, leading to a fatal outcome.<ref name="pmid24406736">{{cite journal| author=Al-Tawfiq JA, Momattin H, Dib J, Memish ZA| title=Ribavirin and interferon therapy in patients infected with the Middle East respiratory syndrome coronavirus: an observational study. | journal=Int J Infect Dis | year= 2014 | volume= 20 | issue=  | pages= 42-6 | pmid=24406736 | doi=10.1016/j.ijid.2013.12.003 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=24406736  }} </ref>
===Supportive Care===


Despite the absence of a specific therapy, some approaches are considered to be more worth of experimentation than others. These include:<ref name=ISARIC>{{cite web | title = Treatment of MERS-CoV: Decision Support Tool | url = http://www.hpa.org.uk/webc/HPAwebFile/HPAweb_C/1317139281416 }}</ref><ref name="pmid23782860">{{cite journal| author=Guery B, van der Werf S| title=Coronavirus: need for a therapeutic approach. | journal=Lancet Infect Dis | year= 2013 | volume= 13 | issue= 9 | pages= 726-7 | pmid=23782860 | doi=10.1016/S1473-3099(13)70153-1 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=23782860  }} </ref><ref name="pmid23549610">{{cite journal| author=Ren Z, Yan L, Zhang N, Guo Y, Yang C, Lou Z et al.| title=The newly emerged SARS-like coronavirus HCoV-EMC also has an "Achilles' heel": current effective inhibitor targeting a 3C-like protease. | journal=Protein Cell | year= 2013 | volume= 4 | issue= 4 | pages= 248-50 | pmid=23549610 | doi=10.1007/s13238-013-2841-3 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=23549610  }} </ref><ref name=WHO>{{cite web | title = WHO-ISARIC joint MERS-CoV Outbreak Readiness Workshop: Clinical management and potential use of convalescent plasma | url = http://www.who.int/csr/disease/coronavirus_infections/MERS_outbreak_readiness_workshop.pdf }}</ref><ref name="pmid23993766">{{cite journal| author=Momattin H, Mohammed K, Zumla A, Memish ZA, Al-Tawfiq JA| title=Therapeutic options for Middle East respiratory syndrome coronavirus (MERS-CoV)--possible lessons from a systematic review of SARS-CoV therapy. | journal=Int J Infect Dis | year= 2013 | volume= 17 | issue= 10 | pages= e792-8 | pmid=23993766 | doi=10.1016/j.ijid.2013.07.002 | pmc= | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=23993766  }} </ref>
The supportive medical care aims to minimize as much as possible the damages caused by [[MERS]]. It is divided into 4 categories, according to the clinical status of the patient. These categories include:<ref name=WHO>{{cite web | title = Clinical management of severe acute respiratory infections when novel coronavirus is suspected: What to do and what not to do | url = http://www.who.int/csr/disease/coronavirus_infections/InterimGuidance_ClinicalManagement_NovelCoronavirus_11Feb13u.pdf }}</ref>
*'''Convalescent [[plasma]]''' - this therapy, along with others that involve [[antibodies]] for the [[MERS-CoV]] has the strongest evidence for intervention. [[Plasma]] from patients who recovered from [[MERS-CoV]] [[infection]] contains neutralizing [[antibodies]], which represents the best therapy to neutralize the [[extracellular]] [[virus]].
*'''[[Interferon]]''' - there is supporting evidence from ''[[in vitro]] ([[SARS virus]] and [[MERS-CoV]])'' and ''[[in vivo]] ([[SARS virus]])'' studies that [[interferon]] inhibits [[viral replication]], especially when administered in the early course of the disease. Additionally it is commonly more available than [[plasma]].
*'''[[Corticosteroids]]''' - there is no evidence of the benefit in the [[mortality rate]] and their use is only recommended in a planned treatment regimen or when the benefits of the [[drug]] outweigh the potential harms. When used, constant monitoring is mandatory and the ideal timing is the early course of the disease, during the period of maximal [[inflammatory response]].
*'''[[Ribavirin]]''' - the most commonly used [[drug]] in the treatment of [[SARS]]. Due to the controversial results of [[clinical trials]] relating to the use of [[ribavirin]] for [[MERS]] and its high level of [[toxicity]] in humans, some experts recommend the withhold of the [[drug]].


==Supportive Care==
====Supportive Management of Primary Infection====
The supportive medical care aims to minimize as much as possible the damages caused by [[MERS]]. It is divided into 4 categories, according to the clinical status of the patient. These categories include:<ref name=WHO>{{cite web | title = Clinical management of severe acute respiratory infections when novel coronavirus is suspected: What to do and what not to do | url = http://www.who.int/csr/disease/coronavirus_infections/InterimGuidance_ClinicalManagement_NovelCoronavirus_11Feb13u.pdf }}</ref>
*Provide [[oxygen]] therapy to patients with severe acute [[respiratory infections]], presenting with [[hypoxemia]] or [[shock]]
*Administer empiric [[antibiotics]] until the diagnosis of MERS-CoV is confirmed
*Administer fluids carefully in patients with severe acute [[respiratory infections]], even in the absence of [[shock]], since volume overload may jeopardize [[oxygenation]]
*Monitor forpossible clinical deterioration of patients with severe acute [[respiratory infections]]
*Avoid high-dose systemic [[corticosteroids]] to prevent side-effects such as opportunistic [[infections]] and [[avascular necrosis]]


===Early recognition===
====Management of Acute Respiratory Distress Syndrome====
This section focuses on the early recognition of [[symptoms]] and management of patients with severe acute [[respiratory infections]]. This includes:<ref name=WHO>{{cite web | title = Clinical management of severe acute respiratory infections when novel coronavirus is suspected: What to do and what not to do | url = http://www.who.int/csr/disease/coronavirus_infections/InterimGuidance_ClinicalManagement_NovelCoronavirus_11Feb13u.pdf }}</ref>
*Recognition of severe manifestations of acute [[respiratory infections]], such as [[pneumonia]] or [[sepsis]]
*Prevention of [[infection]] by implementing measures like [[droplet]] or airborne precautions
*Providing [[oxygen]] therapy to patients with severe acute [[respiratory infections]], presenting with [[hypoxemia]] or [[shock]]
*Specimen collection for laboratory testing, from [[Upper respiratory tract|upper]] and [[lower respiratory tract]]s
*Empiric [[antibiotics]] until diagnosis of is confirmed
*Careful fluid administration in patients with severe acute [[respiratory infections]], even in the absence of [[shock]], since volume overload may jeopardize [[oxygenation]]
*Monitoring of possible clinical deterioration of patients with severe acute [[respiratory infections]]
*Avoidance of high-dose systemic [[corticosteroids]] to prevent side-effects such as opportunistic [[infections]] and [[avascular necrosis]]


====Acute Respiratory Distress Syndrome====
{{Details|Acute respiratory distress syndrome medical therapy|the management of ARDS}}


This section focuses on management of patients who deteriorate and develop [[ARDS]]. It includes:<ref name=WHO>{{cite web | title = Clinical management of severe acute respiratory infections when novel coronavirus is suspected: What to do and what not to do | url = http://www.who.int/csr/disease/coronavirus_infections/InterimGuidance_ClinicalManagement_NovelCoronavirus_11Feb13u.pdf }}</ref>
This section focuses on management of patients who deteriorate and develop [[ARDS]]. Management includes the following:<ref name=WHO>{{cite web | title = Clinical management of severe acute respiratory infections when novel coronavirus is suspected: What to do and what not to do | url = http://www.who.int/csr/disease/coronavirus_infections/InterimGuidance_ClinicalManagement_NovelCoronavirus_11Feb13u.pdf }}</ref>
*Recognition of severe cases where [[oxygen]] therapy may not be enough and a higher flow system may be required
*Recognition of severe cases where [[oxygen]] therapy may not be enough and a higher flow system may be required
*[[Mechanical ventilation]] in patients with [[respiratory distress]] or [[hypoxemia]] that does not resolve with high-flow [[oxygen]] therapy
*[[Mechanical ventilation]] in patients with [[respiratory distress]] or [[hypoxemia]] that does not resolve with high-flow [[oxygen]] therapy
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*Fluid management in [[ARDS]] patients, in the absence of [[shock]], in order to decrease duration of [[mechanical ventilation]]
*Fluid management in [[ARDS]] patients, in the absence of [[shock]], in order to decrease duration of [[mechanical ventilation]]


====Septic Shock====
====Management of Septic Shock====
This section targets the adequate management of [[septic shock]]. It includes:<ref name=WHO>{{cite web | title = Clinical management of severe acute respiratory infections when novel coronavirus is suspected: What to do and what not to do | url = http://www.who.int/csr/disease/coronavirus_infections/InterimGuidance_ClinicalManagement_NovelCoronavirus_11Feb13u.pdf }}</ref>
 
{{Details|Sepsis medical therapy|the management of septic shock}}
 
This section targets the adequate management of [[septic shock]]. Management includes the following:<ref name=WHO>{{cite web | title = Clinical management of severe acute respiratory infections when novel coronavirus is suspected: What to do and what not to do | url = http://www.who.int/csr/disease/coronavirus_infections/InterimGuidance_ClinicalManagement_NovelCoronavirus_11Feb13u.pdf }}</ref>
 
*Recognition of [[septic shock]] in the presence of persistent [[hypotension]] after fluid administration or signs of peripheral [[hypoperfusion]], followed by [[resuscitation]]
*Recognition of [[septic shock]] in the presence of persistent [[hypotension]] after fluid administration or signs of peripheral [[hypoperfusion]], followed by [[resuscitation]]
*Administration of [[intravenous]] crystalloids in [[septic shock]]
*Administration of [[intravenous]] crystalloids in [[septic shock]]
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*Reduce [[weakness]] by immobilization
*Reduce [[weakness]] by immobilization


==''In Vitro'' Studies==
==Antimicrobial regimen==
The development of an [[antiviral drug]] is a long-winded process that may not be compatible with the need of a [[drug]] to treat [[coronaviruses]], specifically [[MERS-CoV]]. Therefore, some studies using existing therapies are being developed in order to find a [[drug]] that will likely inhibit the [[infection]] by [[MERS-CoV]].<ref name="de WildeJochmans2014">{{cite journal|last1=de Wilde|first1=A. H.|last2=Jochmans|first2=D.|last3=Posthuma|first3=C. C.|last4=Zevenhoven-Dobbe|first4=J. C.|last5=van Nieuwkoop|first5=S.|last6=Bestebroer|first6=T. M.|last7=van den Hoogen|first7=B. G.|last8=Neyts|first8=J.|last9=Snijder|first9=E. J.|title=Screening of an FDA-approved compound library identifies four small-molecule inhibitors of Middle East respiratory syndrome coronavirus replication in cell culture|journal=Antimicrobial Agents and Chemotherapy|year=2014|issn=0066-4804|doi=10.1128/AAC.03011-14}}</ref><ref name="pmid23620378">{{cite journal| author=de Wilde AH, Raj VS, Oudshoorn D, Bestebroer TM, van Nieuwkoop S, Limpens RW et al.| title=MERS-coronavirus replication induces severe in vitro cytopathology and is strongly inhibited by cyclosporin A or interferon-α treatment. | journal=J Gen Virol | year= 2013 | volume= 94 | issue= Pt 8 | pages= 1749-60 | pmid=23620378 | doi=10.1099/vir.0.052910-0 | pmc=PMC3749523 | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=23620378  }} </ref>
*'''Middle East Respiratory Syndrome treatment'''<ref>http://apps.who.int/iris/bitstream/10665/178529/1/WHO_MERS_Clinical_15.1_eng.pdf?ua=1</ref>
One of these studies was performed on cell cultures, in the hope of finding a previously approved [[FDA]] compounds that would inhibit the replication of the [[virus]] ''in vitro''. It was able to find four molecule inhibitors of the replication of [[MERS-CoV]]:<ref name="de WildeJochmans2014">{{cite journal|last1=de Wilde|first1=A. H.|last2=Jochmans|first2=D.|last3=Posthuma|first3=C. C.|last4=Zevenhoven-Dobbe|first4=J. C.|last5=van Nieuwkoop|first5=S.|last6=Bestebroer|first6=T. M.|last7=van den Hoogen|first7=B. G.|last8=Neyts|first8=J.|last9=Snijder|first9=E. J.|title=Screening of an FDA-approved compound library identifies four small-molecule inhibitors of Middle East respiratory syndrome coronavirus replication in cell culture|journal=Antimicrobial Agents and Chemotherapy|year=2014|issn=0066-4804|doi=10.1128/AAC.03011-14}}</ref><ref name="pmid23620378">{{cite journal| author=de Wilde AH, Raj VS, Oudshoorn D, Bestebroer TM, van Nieuwkoop S, Limpens RW et al.| title=MERS-coronavirus replication induces severe in vitro cytopathology and is strongly inhibited by cyclosporin A or interferon-α treatment. | journal=J Gen Virol | year= 2013 | volume= 94 | issue= Pt 8 | pages= 1749-60 | pmid=23620378 | doi=10.1099/vir.0.052910-0 | pmc=PMC3749523 | url=http://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=23620378  }} </ref>
*[[Chloroquine]]


*[[Chlorpromazine]]
:* Preferred regimen: supportive care.
:* Note: There is no antiviral recommended for this infection at this moment, even though experimental therapies are at research (IFNs, [[Ribavirin]], [[Lopinavir]], [[Mycophenolic acid]], [[Cyclosporine]], [[Chloroquine]], [[Chlorpromazine]], [[Loperamide]], [[6-mercaptopurine]] and [[6-thioguanine]]). Supportive care include: administer oxygen to patients with severe acute pulmonary infection with signs of respiratory distress, hypoxaemia or shock; use conservative fluids management, avoid administering high-dose systemic glucocorticoids, use non-invasive ventilation, but, if its nor effective, do not delay endotracheal intubation; use lung-protective strategy for intubated patients, recognize sepsis as early as possible and treat it accordingly.


*[[Loperamide]]
==References==
{{reflist|2}}


*[[Lopinavir]]
[[Category:Disease]]
 
Although the selectivity index of some compounds was limited, the researchers were able to determine a [[concentration]] of [[drug]] that inhibited the replication of the [[virus]] by more than 80%, preserving the viability of the [[cell]]. These [[drugs]] were also found to be able to inhibit the replication of other [[coronaviruses]], namely the ''HCoV-229E'' and the ''[[SARS-CoV]]''. The [[off-label]] use of these [[drugs]], particularly when used in combination, might be able to reduce the [[viral load]] of the host, therefore halting the course of [[infection]] and allowing the building of a proper [[immune response]] by the host's [[immune system]].<ref name="de WildeJochmans2014">{{cite journal|last1=de Wilde|first1=A. H.|last2=Jochmans|first2=D.|last3=Posthuma|first3=C. C.|last4=Zevenhoven-Dobbe|first4=J. C.|last5=van Nieuwkoop|first5=S.|last6=Bestebroer|first6=T. M.|last7=van den Hoogen|first7=B. G.|last8=Neyts|first8=J.|last9=Snijder|first9=E. J.|title=Screening of an FDA-approved compound library identifies four small-molecule inhibitors of Middle East respiratory syndrome coronavirus replication in cell culture|journal=Antimicrobial Agents and Chemotherapy|year=2014|issn=0066-4804|doi=10.1128/AAC.03011-14}}</ref>
 
Further studies will evaluate the potential benefit of the combination of 2+ of these [[drugs]], along with [[interferon]] as well. Of the above mentioned, the two presenting as better options for more [[animal studies]] and/or [[off-label]] use, are the [[chloroquine]] and [[lopinavir]]. This potential use is due to the fact that these [[drugs]] were able to inhibit replication of the [[virus]], in the tested cell cultures, in [[concentrations]] that are possible to be achieved in the human [[plasma]].<ref name="de WildeJochmans2014">{{cite journal|last1=de Wilde|first1=A. H.|last2=Jochmans|first2=D.|last3=Posthuma|first3=C. C.|last4=Zevenhoven-Dobbe|first4=J. C.|last5=van Nieuwkoop|first5=S.|last6=Bestebroer|first6=T. M.|last7=van den Hoogen|first7=B. G.|last8=Neyts|first8=J.|last9=Snijder|first9=E. J.|title=Screening of an FDA-approved compound library identifies four small-molecule inhibitors of Middle East respiratory syndrome coronavirus replication in cell culture|journal=Antimicrobial Agents and Chemotherapy|year=2014|issn=0066-4804|doi=10.1128/AAC.03011-14}}</ref>
 
==References==
{{Reflist|2}}


{{WH}}
[[Category:Virology]]
{{WS}}
[[category:disease]]
[[Category:Infectious disease]]
[[category:virology]]
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: João André Alves Silva, M.D. [2]

Overview

Antiviral therapy against MERS-CoV is not yet recommended. Supportive care is the mainstay of management of MERS-CoV. Monitoring for and early management of MERS-CoV-associated complications is also important.

Medical Therapy

According to the International Severe Acute Respiratory & Emerging Infection Consortium from the ISARIC and the Interim Guidance Document from the WHO, supportive medical care is the mainstay of management of MERS-CoV.[1][2]

Supportive Care

The supportive medical care aims to minimize as much as possible the damages caused by MERS. It is divided into 4 categories, according to the clinical status of the patient. These categories include:[1]

Supportive Management of Primary Infection

Management of Acute Respiratory Distress Syndrome

This section focuses on management of patients who deteriorate and develop ARDS. Management includes the following:[1]

Management of Septic Shock

This section targets the adequate management of septic shock. Management includes the following:[1]

Prevention of Complications

This section is mainly based on preventing possible complications. It includes:[1]

  • preferring oral intubation
  • performing frequent antiseptic oral care
  • adjusting the patient to a reclined position
  • preferring a closed suctioning system
  • changing the ventilator circuit for every patient
  • monitoring the status of heat moisture exchanger
  • reducing intermittent mandatory ventilation

Antimicrobial regimen

  • Middle East Respiratory Syndrome treatment[8]
  • Preferred regimen: supportive care.
  • Note: There is no antiviral recommended for this infection at this moment, even though experimental therapies are at research (IFNs, Ribavirin, Lopinavir, Mycophenolic acid, Cyclosporine, Chloroquine, Chlorpromazine, Loperamide, 6-mercaptopurine and 6-thioguanine). Supportive care include: administer oxygen to patients with severe acute pulmonary infection with signs of respiratory distress, hypoxaemia or shock; use conservative fluids management, avoid administering high-dose systemic glucocorticoids, use non-invasive ventilation, but, if its nor effective, do not delay endotracheal intubation; use lung-protective strategy for intubated patients, recognize sepsis as early as possible and treat it accordingly.

References

  1. 1.0 1.1 1.2 1.3 1.4 "Clinical management of severe acute respiratory infections when novel coronavirus is suspected: What to do and what not to do" (PDF).
  2. "Treatment of MERS-CoV: Decision Support Tool".
  3. "NIH NHLBI ARDS Clinical Network Mechanical Ventilation Protocol Summary" (PDF).
  4. Dellinger RP, Levy MM, Rhodes A, Annane D, Gerlach H, Opal SM; et al. (2013). "Surviving sepsis campaign: international guidelines for management of severe sepsis and septic shock: 2012". Crit Care Med. 41 (2): 580–637. doi:10.1097/CCM.0b013e31827e83af. PMID 23353941.
  5. Papazian, Laurent; Forel, Jean-Marie; Gacouin, Arnaud; Penot-Ragon, Christine; Perrin, Gilles; Loundou, Anderson; Jaber, Samir; Arnal, Jean-Michel; Perez, Didier; Seghboyan, Jean-Marie; Constantin, Jean-Michel; Courant, Pierre; Lefrant, Jean-Yves; Guérin, Claude; Prat, Gwenaël; Morange, Sophie; Roch, Antoine (2010). "Neuromuscular Blockers in Early Acute Respiratory Distress Syndrome". New England Journal of Medicine. 363 (12): 1107–1116. doi:10.1056/NEJMoa1005372. ISSN 0028-4793.
  6. Messerole E, Peine P, Wittkopp S, Marini JJ, Albert RK (2002). "The pragmatics of prone positioning". Am J Respir Crit Care Med. 165 (10): 1359–63. doi:10.1164/rccm.2107005. PMID 12016096.
  7. Pronovost P, Needham D, Berenholtz S, Sinopoli D, Chu H, Cosgrove S; et al. (2006). "An intervention to decrease catheter-related bloodstream infections in the ICU". N Engl J Med. 355 (26): 2725–32. doi:10.1056/NEJMoa061115. PMID 17192537.
  8. http://apps.who.int/iris/bitstream/10665/178529/1/WHO_MERS_Clinical_15.1_eng.pdf?ua=1