EEG, CT AND NEUROSONOGRAPHIC FINDINGS IN PATIENTS WITH POSTISCHEMIC SEIZURES

Seventy-two patients with postischemic seizures were evaluated with el ectroencephalography (EEG), computerized tomography (CT) and neurosono graphy. There were 24% early-onset and 76% late-onset initial seizures . Early-onset seizure was more likely to be simple partial (53%), wher eas late-onset seizure was more likely to be primarily generalized (56 %). 76% early-onset and 80% late-onset seizures were single. Status ep ilepticus was more frequent in early-onset than late-onset seizures (p = 0.023). The possibility of recurrence was greater in late-onset tha n early-onset seizures(p < 0.001). 88% patients had EEG abnormalities, and the most common finding was focal slowing. 75% patients had cereb ral infarctions on CT scan, and the majority of them involved cortex. 89% postischemic seizures had carotid lesions which mostly were caroti d plaques < 50%. We failed to find these data to be useful in predicti ng the time of onset of initial seizures after acute ischemic stroke a nd recurrence.