脑梗死急性期脑电图检查意义探究  

To exlpore significance of the EEG examination in the patients with acute cerebral infarction

作　　者：李新宇[1] 王薇薇[1] 吴逊[1] 

机构地区：[1]北京大学第一医院神经内科,北京100034

出　　处：《临床神经电生理学杂志》2006年第5期284-286,共3页Journal of Clinical Electroneurophysiology

摘　　要：目的:进一步探究脑电图(EEG)在脑梗死急性期辅助诊断和判断预后方面的应用价值。方法:16例脑梗死急性期患者,头颅CT检查正常,发病24～48 h内进行床旁脑电描记,选择理想信号段进行功率谱分析,计算各频段功率值及指数。发病后1～4周行头颅MRI检查以明确责任病灶,并随访病情变化。结果:脑电图异常率为88％,功率谱分析显示患侧α频段功率值降低,慢波频段功率值增高,α指数显著下降,δ指数显著升高。脑电图定侧与头颅MRI基本相符。结论:脑电图反映脑功能活动,对皮质缺血十分敏感,并有助于判断预后。计算机分析方法可提供更多信息。脑电图操作方便,在脑梗死早期诊断中是较有价值的检查方法。Objective：To explore the value of EEG in the assistant diagnosis and prognostication of the acute cerebral infarction. Methods：Bedside electroencephalograph was examined in 16 patients with acute cerebral infarction by 24-48 hours whose cranial CT scan is normal. The selected data was analysed to get the power spectrum and the indexes of α、β、θ、δ waves. Results：In the patients,the abnormity rate of EEG is 88% , power spectrum reveals that α power values of the lesion lateral decrease and slow wave power values increase. In the lesion lateral α index significantly decreases, while δ index increases. The diagnostic infarction lateral based on EEG is consistent with cranial MRI. Conclusion： EEG reveal the function of the brain, which is very sensitive to the cortex ischemia and contribute to prognostication. Computer analysis of EEG provide more information. The practice of EEC- is simple, and it is valuable in the assistant diagnosis of the acute cerebral infarction.

关 键 词：脑梗死 脑电图 功率谱 

分 类 号：R743.32[医药卫生—神经病学与精神病学] R741.044[医药卫生—临床医学]