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?:abstract
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OBJECTIVE To describe the spectrum of neurological complications observed in a hospital-based cohort of COVID-19 patients who required a neurological assessment. METHODS We conducted an observational, monocentric, prospective study of patients with a COVID-19 diagnosis hospitalized during the three-month period of the first wave of the COVID-19 pandemic in a tertiary hospital in Madrid (Spain). We describe the neurological diagnoses that arose after the onset of COVID-19 symptoms. These diagnoses could be divided into different groups. RESULTS Only seventy-one (2.6%) out of 2,750 hospitalized patients suffered at least one neurological complication (77 different neurological diagnoses in total) during the timeframe of the study. The most common diagnoses were neuromuscular disorders (33.7%), cerebrovascular diseases (CVDs) (27.3%), acute encephalopathy (19,4%), seizures (7.8%), and miscellanea (11.6%) comprising hiccups, myoclonic tremor, Horner syndrome and transverse myelitis. CVDs and encephalopathy were common in the early phase of the COVID-19 pandemic compared to neuromuscular disorders, which usually appeared later on (p = 0.005). Cerebrospinal fluid SARS-CoV-2 PCR was negative in 15/15 samples. The mortality was higher in the CVD group (38.1% vs 8.9%; p = 0.05). CONCLUSIONS The prevalence of neurological complications is low in patients hospitalized for COVID-19. Different mechanisms appear to be involved in these complications, and there was no evidence of direct invasion of the nervous system in our cohort. Some of the neurological complications can be classified into early and late neurological complications of COVID-19, as they occurred at different times following the onset of COVID-19 symptoms.
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