Neurological and Head/Eyes/Ears/Nose/Throat Manifestations of COVID-19: A Systematic Review and Meta-Analysis.
Can J Neurol Sci
; 49(4): 514-531, 2022 07.
Article
in English
| MEDLINE | ID: covidwho-1433995
ABSTRACT
BACKGROUND/OBJECTIVE:
Coronavirus disease 2019 (COVID-19) has been associated with various neurological and atypical head/eyes/ears/nose/throat (HEENT) manifestations. We sought to review the evidence for these manifestations.METHODS:
In this systematic review and meta-analysis, we compiled studies published until March 31, 2021 that examined non-respiratory HEENT, central, and peripheral nervous system presentations in COVID-19 patients. We included 477 studies for qualitative synthesis and 59 studies for meta-analyses.RESULTS:
Anosmia, ageusia, and conjunctivitis may precede typical upper/lower respiratory symptoms. Central nervous system (CNS) manifestations include stroke and encephalopathy, potentially with brainstem or cranial nerve involvement. MRI studies support CNS para-/postinfectious etiologies, but direct neuroinvasion seems very rare, with few cases detecting Severe Acute Respiratory Syndrome Coronavirus 2 (SARS-CoV-2) in the CNS. Peripheral nervous system (PNS) manifestations include muscle damage, Guillain-Barre syndrome (GBS), and its variants. There was moderate-to-high study heterogeneity and risk of bias. In random-effects meta-analyses, anosmia/ageusia was estimated to occur in 56% of COVID-19 patients (95% CI 0.41-0.71, I299.9%), more commonly than in patients without COVID-19 (OR 14.28, 95% CI 8.39-24.29, I2 49.0%). Neurological symptoms were estimated to occur in 36% of hospitalized patients (95% CI 0.31-0.42, I2 99.8%); ischemic stroke in 3% (95% CI 0.03-0.04, I2 99.2%), and GBS in 0.04% (0.033%-0.047%), more commonly than in patients without COVID-19 (OR[stroke] 2.53, 95% CI 1.16-5.50, I2 76.4%; OR[GBS] 3.43,1.15-10.25, I2 89.1%).CONCLUSIONS:
Current evidence is mostly from retrospective cohorts or series, largely in hospitalized or critically ill patients, not representative of typical community-dwelling patients. There remains a paucity of systematically gathered prospective data on neurological manifestations. Nevertheless, these findings support a high index of suspicion to identify HEENT/neurological presentations in patients with known COVID-19, and to test for COVID-19 in patients with such presentations at risk of infection.Keywords
Full text:
Available
Collection:
International databases
Database:
MEDLINE
Main subject:
Guillain-Barre Syndrome
/
Stroke
/
Ageusia
/
COVID-19
/
Nervous System Diseases
Type of study:
Cohort study
/
Etiology study
/
Observational study
/
Prognostic study
/
Qualitative research
/
Randomized controlled trials
/
Reviews
/
Systematic review/Meta Analysis
Topics:
Long Covid
/
Variants
Limits:
Humans
Language:
English
Journal:
Can J Neurol Sci
Year:
2022
Document Type:
Article
Affiliation country:
Cjn.2021.180
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