Can J Neurol Sci
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We analysed the charts of 131 consecutive cases of spontaneous subarachnoid hemorrhage--without arteriovenous malformations--for seizures. Convulsions occurred in 31 patients (24%) and most often within 24 hours of bleeding. ⋯ Early mortality, rebleeding and intracerebral hematoma were similar in both seizure and non-seizure groups. Late seizures were infrequent in survivors who had suffered seizures in the acute stage--thus questioning the necessity for routine, long term prophylactic anticonvulsants in these patients.