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?:abstract
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Viral infection with SARS-CoV-2 has a neurological tropism that may induce an encephalopathy In this context, electroencephalographic exploration (EEG) is indicated as a diagnostic argument correlated with lumbar puncture, biology, and imaging We performed a retrospective analysis of 42 patients explored by EEG and infected by COVID-19, according to the EEG abnormalities and clinical signs that motivated the examination Confusion and epileptic seizures were the most common clinical indications, with 64% of the patients displaying these symptoms The EEG was altered in 85% of the cases of confusion, in 57% of the cases of epileptic symptoms (general or focal seizure or prolonged loss of contact) and 20% of the cases of malaise or brief loss of consciousness Nine EEG (21%) were in favor of an encephalopathy, two had de novo alterations in persistent consciousness and two had alterations in general states of confusion;one was very agitated and without history of epilepsy and combined eyelids clonia while a second one exhibited unconsciousness with left hemicorpus clonus Two were being investigated for delayed awakening without sedation for more than 24 h All of these patients were diagnosed COVID-19, some of them with associated mild to severe respiratory disorders This work shows the interest of the EEG in exploring COVID-19 patients suffering from neurological or general symptoms looking for cerebral alteration
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