180例原发性癫痫大发作脑电图分析

Grand mal idiopathic epilepsy:EEG analysis of 180 cases

对180例原发性癫痫大发作患者作了脑电图检查分析,本组病例脑电图异常率为63.9%。脑电图异常表现多在基本节律的背景上散发或短程阵发中至高波幅的θ波和δ波,部分病例间有棘波、尖波,棘(尖)慢综合波。少数病例基本节律为θ和δ波,间有尖波、棘波、尖慢波、棘慢波等。提示大部分病人间歇期脑电图检查可获得特征性的改变。作者同时发现从最后一次发作停止后在8～10天内描记脑电图阳性率最高,而2天内阳性率反低,其原因未明。

Grand mal idiopathic epilepsy were analysed with electroencephalography in 180 patients. The abnormal rate is 63.9 per cent.The abnormality is sporadic as the basic rhythem is normal or reaches the high-voltage theta waves and delta waves in shont; range paroxysm. There were spike wave,sharp wave and spike (sharp) complex waves in some cases.The basic rhythcms in a few cases showed theta and delta waves, andsometimes sharp slow wave and spike slow wave.All this suggested that most cases improve significantly with EEG examination at interval.The authors also discovered that the positive rate was low within the first two days ahd the highest from 3rd to 10th days after onset had stopped. The causes are unknown.