Effect of Epileptiform Abnormality Burden on Neurologic Outcome and Antiepileptic Drug Management After Subarachnoid Hemorrhage

Epileptiform abnormalities (EAs) including seizures, periodic and rhythmic patterns, and sporadic discharges are seen in electroencephalogram (EEG) recordings in up to 20% percent of patients with aneurysmal subarachnoid hemorrhage (aSAH) (Claassen et al., 2006). The presence of periodic discharges and seizures has been linked to worse functional and cognitive outcomes (Claassen et al., 2006; De Marchis et al., 2016). Nevertheless, there is limited and conflicting data on how the burden and subtype of EAs influence outcome in patients with aSAH (Crepeau et al., 2013).

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