脑死亡与脑昏迷脑电信号的复杂度研究

脑死亡诊断是有关病人生死的重要问题.许多国家都把脑电平坦列为脑死亡诊断的基本条件,但研究发现并非所有的脑死亡患者均表现为脑电平坦,同时脑昏迷患者在部分情况下也会表现出脑电平坦的现象,从而有可能在临床中造成误判.C0复杂度判断指标能够利用脑电信号中的复杂度特性帮助临床诊断中对于脑死亡和脑昏迷状况的鉴别.运用C0复杂度算法对22位脑死亡和脑昏迷病例进行分析实验,可以发现脑死亡脑电信号的复杂度明显高于脑昏迷脑电信号的复杂度.实验表明C0复杂度可以用来有效地区分脑死亡和脑昏迷脑电信号,具有潜在的重要临床价值.

Complexity Research on EEG Signal of Brain-death and Coma

The determination of brain-death is a very serious and complex problem indeed. Nowadays many countries regard flat EEG at a level of 2 µV as a confirmatory test for brain-death. But it has been discovered that not all the brain-death persons‘ EEGs are at a level of 2 µV, meanwhile some coma persons also have the statuses of flat EEG, which may lead to wrong determination of patients. In this paper, a practical EEG examination method based on C₀ complexity is introduced for brain death determination. Through the analysis of 22 patients EEG data by the proposed approach, coma patients and brain-death ones can be distinguished, which may make C₀ complexity method a promising utilitarian EEG test in the real diagnosis.