Cerebrovascular complications of covid-19

The systematic online search of articles utilizing the search terms ”Coronavirus, SARS-COV-2 and Neurological complications”, published between January 2019 and September 2021, was performed. Neurological manifestations are prevalent during infection with the novel severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2). There is a clear association between cerebrovascular disease and coronavirus disease 2019 (COVID-19). But today, whether this association is causal or incidental is still unknown. This systemic review presents the possible pathophysiological mechanisms linking COVID-19 and cerebrovascular disease, describes the most often neurological complications and their prognosis, discusses several clinical and laboratory characteristics. A systematic literature search was conducted, and relevant information was abstracted. Angiotensin-converting enzyme-2 receptor dysregulation, uncontrollable immune storm with inflammation, coagulopathy, complications due to critical illness and prolonged hospitalization can all contribute as potential etiological and pathogenic mechanisms leading to diverse cerebrovascular clinical manifestations. Acute ischemic stroke, intracerebral haemorrhage, and cerebral venous sinus thrombosis have been described in case reports and cohorts of COVID-19 patients, with a prevalence ranging between 0.5 % and 5.0 %. SARS-CoV-2-positive stroke patients have higher mortality rates, worse functional outcomes at discharge and longer duration of hospitalization as compared with SARS-CoV-2-negative stroke patients. Understanding of the specific demographic, clinical, laboratory and radiological characteristics may be used as ‘red flags’ in recognizing COVID-19-related acute neurological complications.