164例急性脑梗死的脑电图分析

Analysis of EEG in 164 patients with acute cerebral infarction

目的 :探讨EEG对脑缺血的早期诊断价值。方法 :回顾性分析 16 4例急性脑梗死患者的EEG资料 ,并与头颅CT作对比研究。结果 :急性脑梗死的早期 (≤ 72h)CT异常率 6 1 6 % ,EEG异常率 88 1% ,两者差异有非常显著意义 (P <0 0 1)。EEG异常以局限性及广泛伴局限性改变为主( 82 3% ) ;BEAM的α和δ频带功率值局限性改变有助于定侧定位。结论 :EEG在评价急性脑缺血方面有一定的优越性 。

Objective:To explore the value of EEG in early diagnosis of cerebral ischemia.Methods:The EEG data of 164 patients with acute cerebral infarction were retrospectively analyzed and compared with brain CT.Results:In the early stages(≤72h) of cerebral infarction,the abnormality rate of brain CT was 61 6%,but the EEG abnormality rate was 88 1%,and there was a significant difference between them ( P <0 01).The focal EEG abnormality and generalized EEG abnormalities with focal changes were mainly noted in 82 3% of the patients.The focal alteration in powers of α and δ frequency bands in BEAM might help to localize and lateralize the focus.Conclusions:EEG might be a useful tool for evaluating the acute cerebral ischemia,especially the early stage of cerebral infarction with a negative CT.