COVID-19-associated meningitis: Difference between revisions

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* Exosomal cellular transport is also a pathway for [[SARS-CoV-2]] systemic dissemination and spread to [[CNS]].<ref name="pmid26393640">{{cite journal| author=Alenquer M, Amorim MJ| title=Exosome Biogenesis, Regulation, and Function in Viral Infection. | journal=Viruses | year= 2015 | volume= 7 | issue= 9 | pages= 5066-83 | pmid=26393640 | doi=10.3390/v7092862 | pmc=4584306 | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=26393640  }}</ref>
* Exosomal cellular transport is also a pathway for [[SARS-CoV-2]] systemic dissemination and spread to [[CNS]].<ref name="pmid26393640">{{cite journal| author=Alenquer M, Amorim MJ| title=Exosome Biogenesis, Regulation, and Function in Viral Infection. | journal=Viruses | year= 2015 | volume= 7 | issue= 9 | pages= 5066-83 | pmid=26393640 | doi=10.3390/v7092862 | pmc=4584306 | url=https://www.ncbi.nlm.nih.gov/entrez/eutils/elink.fcgi?dbfrom=pubmed&tool=sumsearch.org/cite&retmode=ref&cmd=prlinks&id=26393640  }}</ref>


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[[File:Meningitis-1.jpg|700px|center]]


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Revision as of 02:51, 14 July 2020

COVID-19 Microchapters

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Case #1

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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: Wajeeha Aiman, M.D.[2], Muhammad Adnan Haider, M.B.B.S.[3] Tayebah Chaudhry[4] Syed Musadiq Ali M.B.B.S.[5]


COVID-19 Microchapters

Home

Long COVID

Frequently Asked Outpatient Questions

Frequently Asked Inpatient Questions

Patient Information

Overview

Historical Perspective

Classification

Pathophysiology

Causes

Differentiating COVID-19 from other Diseases

Epidemiology and Demographics

Risk Factors

Screening

Natural History, Complications and Prognosis

Diagnosis

Diagnostic Study of Choice

History and Symptoms

Physical Examination

Laboratory Findings

Electrocardiogram

X-ray

Echocardiography and Ultrasound

CT scan

MRI

Other Imaging Findings

Other Diagnostic Studies

Treatment

Medical Therapy

Interventions

Surgery

Primary Prevention

Vaccines

Secondary Prevention

Future or Investigational Therapies

Ongoing Clinical Trials

Case Studies

Case #1

COVID-19-associated meningitis On the Web

Most recent articles

Most cited articles

Review articles

CME Programs

Powerpoint slides

Images

American Roentgen Ray Society Images of COVID-19-associated meningitis

All Images
X-rays
Echo & Ultrasound
CT Images
MRI

Ongoing Trials at Clinical Trials.gov

US National Guidelines Clearinghouse

NICE Guidance

FDA on COVID-19-associated meningitis

CDC on COVID-19-associated meningitis

COVID-19-associated meningitis in the news

Blogs on COVID-19-associated meningitis

Directions to Hospitals Treating Psoriasis

Risk calculators and risk factors for COVID-19-associated meningitis

Overview

Covid-19 associated meningitis was first discovered by Moriguchi T. et al. a Japanese critical care physician in late February 2020 during the pandemic of SARS-CoV-2. Duong L et. reported a case of a young female with COVID-19 who developed meningoencephalitis without respiratory failure in Downtown Los Angeles in early April, 2020. Bernard-Valnet R et al. reported two cases of meningoencephalitis in patients with concomitant SARS-CoV-2 infection. There is no established system for the classification of SARS-CoV-2 related meningitis. There are three mechanisms proposed for pathophysiology of COVID-19-associated meningitis. SARS-CoV-2 directly reaches brain through cribriform plate which is located in close proximity to olfactory bulb. This is supported by the facts that some patients of COVID-19 present with anosmia and hyposmia. Viral interaction with ACE2 expressed on neurons lead to damage to neurons and inflamation (encephalitis) and inflammation of brain membranes (meningitis). SARS-CoV-2 can reach brain via anterograde or retrograde transport with the help of motor proteins kinesin and dynein via sensory nerve endings, especially afferent nerve endings of vagus nerve from lungs.

Historical Perspective

  • Neurological symptoms in COVID-19 patients were first reported in February 2020 in a retrospective case series study by Mao L. et al. in hospitalized COVID-19 patients in Wuhan.
  • Ling Mao from Tongji Medical College in Wuhan, and his group reviewed the data retrospectively from January 16, 2020, to February 19, 2020.
  • One third of the 214 hospitalized laboratory- confirmed COVID-19 patients included in this study reported at least one neurological symptom.
  • Covid-19 associated meningitis was first discovered by Moriguchi T. et al. a Japanese critical care physician in late February 2020 during the pandemic of SARS-Coronavirus-2: SARS-CoV-2 [1].
  • Duong L et. reported a case of a young female with COVID-19 who developed meningoencephalitis without respiratory failure in Downtown Los Angeles in early April, 2020 [2].
  • Bernard-Valnet R et al. reported two cases of meningoencephalitis in patients with concomitant SARS-CoV-2 infection.[3]

Classification

  • There is no established system for the classification of COVID-19-associated meningitis.

Pathophysiology

The exact pathogenesis of COVID-19-associated meningitis is not fully understood.

The proposed pathophysiology of COVID-19-associated meningitis is by following three mechanisms;

1.Direct pathway

2. Blood circulation pathway

3. Neuronal Pathway


Causes

Differentiating COVID-19-associated meningitis from other Diseases

Diseases Symptoms Physical Examination Past medical history Diagnostic tests Other Findings
Headache LOC Motor weakness Abnormal sensory Motor Deficit Sensory deficit Speech difficulty Gait abnormality Cranial nerves CT /MRI CSF Findings Gold standard test
Meningitis + - - - - + + - - History of fever and malaise - Leukocytes,

Protein

↓ Glucose

CSF analysis[15] Fever, neck

rigidity

Encephalitis + + +/- +/- - - + +/- + History of fever and malaise + Leukocytes, ↓ Glucose CSF PCR Fever, seizures, focal neurologic abnormalities
Brain tumor[16] + - - - + + + - + Weight loss, fatigue + Cancer cells[17] MRI Cachexia, gradual progression of symptoms
Hemorrhagic stroke + + + + + + + + - Hypertension + - CT scan without contrast[18][19] Neck stiffness
Subdural hemorrhage + + + + + - - - + Trauma, fall + Xanthochromia[20] CT scan without contrast[18][19] Confusion, dizziness, nausea, vomiting
Neurosyphilis[21][22] + - + + + + - + - STIs + Leukocytes and protein CSF VDRL-specifc

CSF FTA-Ab -sensitive[23]

Blindness, confusion, depression,

Abnormal gait

Complex or atypical migraine + - + + - - + - - Family history of migraine - - Clinical assesment Presence of aura, nausea, vomiting
Hypertensive encephalopathy + + - - - - + + - Hypertension + - Clinical assesment Delirium, cortical blindness, cerebral edema, seizure
Wernicke’s encephalopathy - + - - - + + + + History of alcohal abuse - - Clinical assesment and lab findings Ophthalmoplegia, confusion
CNS abscess + + - - + + + - - History of drug abuse, endocarditis, immunosupression + leukocytes, glucose and protien MRI is more sensitive and specific High grade fever, fatigue,nausea, vomiting
Drug toxicity - + - + + + - + - - - - Drug screen test Lithium, Sedatives, phenytoin, carbamazepine
Conversion disorder + + + + + + + + History of emotional stress - - Diagnosis of exclusion Tremors, blindness, difficulty swallowing
Metabolic disturbances (electrolyte imbalance, hypoglycemia) - + + + + + - - + - - Hypoglycemia, hypo and hypernatremia, hypo and hyperkalemia Depends on the cause Confusion, seizure, palpitations, sweating, dizziness, hypoglycemia
Multiple sclerosis exacerbation - - + + - + + + + History of relapses and remissions + CSF IgG levels

(monoclonal bands)

Clinical assesment and MRI [24] Blurry vision, urinary incontinence, fatigue
Seizure + + - - + + - - + Previous history of seizures - Mass lesion Clinical assesment and EEG [25] Confusion, apathy, irritability,


Epidemiology and Demographics

Risk Factors

Screening

  • There is insufficient evidence to recommend routine screening for COVID-19-associated meningitis.
  • To view screening for COVID-19, click here.

Natural History, Complications, and Prognosis

History

  • If left untreated, COVID-19-associated meningitis may cause long term neurological complications.
  • To view Natural History for COVID-19, click here.

Complications

If left untreated, meningitis in COVID-19 patients may develop following complications.

Prognosis

  • Exact prognosis of COVID-19 associated meningitis is not known.
  • However, treating the underlying cause i.e., COVID-19, including treatment with steroids, have shown improvement in meningitis symptoms in a COVID-19 patient.
  • To view Prognosis for COVID-19, click here.

Diagnosis

Diagnostic Study of Choice

  • The diagnostic study of choice for meningitis in COVID-19 patients is CSF analysis and ruling out other causes of meningitis (e.g., other viruses, bacteria, fungi).

History and Symptoms

History:

  • Five cases of meningitis in COVID-19 patients have been reported. The disease course of these patients is given in the table.
Patient No. Early symptoms Late symptoms CSF analysis Viral panel (HSV,VZV, enterovirus) Bacterial panel SARS-CoV-2 analysis Imaging CT/MRI
Protein(mg/L) Glucose(CSF:serum ratio) Cells (mm3) RT-PCR CSF RT-PCR Nasopharyngeal swab
  1. 24 year old male, presented with meningitis in Japan[27]
Headache,

Fever,

fatigue

Worsening headache, Sore throat. (Day 5)

Impaired consciousness and transient generalized seizure, (Day 9)

NA NA Cell count was 12/μL–10

mononuclear and 2 polymorphonuclear cells

Negative Positive Negative Brain MRI:

Hyperintensity in the right lateral ventricle's inferior horn along the wall,

pan-paranasal sinusitis.

2. 64 year old female with a known contact with SARS-CoV-2 (her husband tested positive 15 days before)[28] Mild flue like symptoms

myalgia

cough

Tonic-clonic seizures

disorientation

psychotic symptoms

466 mg/L 0.59 17 cells with 97% lymphocytes negative negative positive Brain MRI normal at admission
3. 67 year old female with known SARS-CoV-2 for 17 days with mild respiratory symptoms[29] wake up severe headache Drowsiness, disoriented was lying on the floor, brought to hospital with confusion, disorientation, 461

mg/L

0.62 21 cells with 87 % cells were lymphocytes negative negative positive Brain MRI normal at admission
4. 69 year old man who returned from Middle East 15 days ago (French Indies)[30] 7 day history of

fever

cough

myalgia

cervical pain

ageusia

anosmia

Severe headache

neck stifness

confusion

84

mg/L

normal 37 cells, purely lymphocytes, with no RBCs negative neagtive negative on nasopharyngeal swab but became positive on bronchoalveolar lavage on 4th day of admission Brain MRI normal on admission
5. 41 year old female, presented with meningoencephalitis without respiratory failure in Downtown Los Angeles in April 2020[31] fever

headache

new onset seizure

severe headache

neck stiffness

photophobia

100

mg/L

0.60 70 cells with 100% lymphocytes negative NA positive CT head without contrast was noraml

Symtoms:

Physical Examination

Vitals:

Physical Exam:

Laboratory Findings

Cerebrospinal fluid level Normal level Bacterial meningitis[37] SARS-CoV-2 meningitis Viral meningitis[37] Fungal meningitis Tuberculous meningitis[39] Malignant meningitis[34]
Cells/ul < 5 >300 10-1000 10-1000 10-500 50-500 >4
Cells Lymphos:Monos 7:3 Gran. > Lymph predominantly lymphocytes Lymph. > Gran. Lympho.>Gran Lymphocytes Lymphocytes
Total protein (mg/dl) 45-60 Typically 100-500 Normal or slightly high Normal or slightly high High Typically 100-200 >50
Glucose ratio (CSF/plasma)[35] > 0.5 < 0.3 > 0.6 > 0.6 <0.3 < 0.5 <0.5
Lactate (mmols/l)[36] < 2.1 > 2.1 N/A < 2.1 >3.2 > 2.1 >2.1
Others ICP:6-12 (cm H2O) CSF gram stain, CSF culture, CSF bacterial antigen RT-PCR for SARS-CoV-2 RNA in CSF (still not approved by FDA) PCR of HSV-DNA, VZV CSF gram stain, CSF india ink PCR of TBC-DNA CSF tumour markers such as alpha fetoproteins, CEA

Electrocardiogram

X-ray

  • There are no x-ray findings associated with COVID-19-associated meningitis.
  • To view the x-ray finidings on COVID-19, click here.

Echocardiography or Ultrasound

CT scan

MRI

Other Imaging Findings

  • There are no other imaging findings associated with COVID-19 associated meningitis.

Other Diagnostic Studies

  • There are no other diagnostic studies associated with COVID-19 associated meningitis.

Treatment

Medical Therapy

The mainstays of medical therapy for viral meningitis are:

Symptomatic treatments:

Surgery

Primary Prevention

Secondary Prevention

References

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  2. Duong L, Xu P, Liu A (2020). "Meningoencephalitis without respiratory failure in a young female patient with COVID-19 infection in Downtown Los Angeles, early April 2020". Brain Behav Immun. 87: 33. doi:10.1016/j.bbi.2020.04.024. PMC 7162766 Check |pmc= value (help). PMID 32305574 Check |pmid= value (help).
  3. Bernard-Valnet R, Pizzarotti B, Anichini A, Demars Y, Russo E, Schmidhauser M; et al. (2020). "Two patients with acute meningoencephalitis concomitant with SARS-CoV-2 infection". Eur J Neurol. doi:10.1111/ene.14298. PMC 7267660 Check |pmc= value (help). PMID 32383343 Check |pmid= value (help).
  4. Tsai LK, Hsieh ST, Chang YC (2005). "Neurological manifestations in severe acute respiratory syndrome". Acta Neurol Taiwan. 14 (3): 113–9. PMID 16252612.
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