Characteristics of epileptic seizures after ischemic stroke

Abstract

Cerebral infarctions are one of the most important causes of late onset epilepsy. We have studied 35 patients who presented epileptic seizures after ischemic stroke. All of them had the first seizure at least 24 hours after the stroke, and they had at least one recurrence of seizure. The objective was to determine the main characteristics of these seizures and to correlate them to clinical and laboratorial findings. The interval between the stroke and the first seizure was 3 to 1650 days. Late onset seizures (>14 days) were present in 89%, they occurred predominantly 6 to 12 months after stroke. Partial seizures (31/35) were more frequent than generalized ones. Status epilepticus occurred in only 3 cases. Most of the patients (30/35) had occasional seizures (14 dias); houve um pico de freqüência no período de 6 a 12 meses após a instalação do AVC. Crises parciais foram mais freqüentes (31/35) do que crises primariamente generalizadas, e estado de mal epiléptico só ocorreu em 3 casos. A maioria (30/35) apresentou crises pouco freqüentes (< 1 crise/mês). Não houve associação entre tipo de crise e intervalo de tempo entre ela e a instalação do AVCI, nem com a freqüência. A alteração eletrencefalográfica mais freqüente foi alentecimento focai da atividade elétrica cerebral. Todos os pacientes obtiveram controle das crises com monoterapia.UNIFESP-EPMUNIFESP, EPMSciEL