Abstract
Encephalopathy is a common complication of COVID-19 that can both be a challenge to manage and also negatively impacts prognosis. Whilst encephalopathy may be due to common systemic causes, such as hypoxia, COVID-19 has also been associated with more prolonged encephalopathy due to less common but nevertheless severe complications, such as inflammation of the brain parenchyma, cerebrovascular involvement and seizures, which may be disproportionate to COVID-19 severity and which require specific management. The aim of this review is to provide pragmatic guidance on the management of COVID-19 encephalopathy through a consensus agreement of the Global COVID-19 Neuro-Research Coalition.A systematic literature search of Medline, MedRxiv, and BioRx was conducted between 1st January 2020 and 11th June 2021 with additional review of references cited within the identified bibliographies. A modified Delphi-approach was then undertaken to develop recommendations along with a parallel approach to score the strength of both the recommendation and the supporting evidence.This manuscript presents analysis of contemporaneous evidence for definition, epidemiology, and pathophysiology of COVID-19 encephalopathy and practical guidance for clinical assessment, investigation, and acute and long-term management.
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