论文部分内容阅读
作者于1984年1月～1986年5月观察了56例临床诊断为脑死亡患者的脑电图。结果56例中11例(占19.6%)在诊断脑死亡后仍有脑电活动。平均观察时限为36.6(2～168)h。具有3种类型的脑电活动:①在脑死亡后72h 内可见到低电压(4～20μV)的θ或β活动,共9例(占16.1%)。其中1例进行了神经病理学检查,显示神经细胞的缺血缺氧性改变,见于大脑皮层的各细胞层、基底节、脑干和小脑。②在脑死亡后168小时内可见到睡眠样脑波(一种同步的30～40μV 的θ和δ复合波、以及60～80μV、
From January 1984 to May 1986, the authors observed the electroencephalograms of 56 patients with brain-dead patients clinically diagnosed. Results Of the 56 cases, 11 (19.6%) still had EEG activity after the diagnosis of brain death. The average observation time was 36.6 (2 ~ 168) h. There are three types of EEG activity: ① The θ or β activity of low voltage (4 ~ 20μV) can be seen within 72 hours after brain death, a total of 9 cases (16.1%). One of the patients underwent neuropathological examination, showing changes in ischemia and hypoxia of nerve cells, which were found in all layers of the cerebral cortex, basal ganglia, brainstem and cerebellum. Sleep-like brain waves (a synchronized 30- 40 μV θ and δ complex waves, as well as 60-80 μV,