摘要
目的:研究全身麻醉过程中脑电信号的复杂度变化规律,寻找适用于临床手术的麻醉深度检测方法。方法:10名手术病人采用靶控输注异丙酚实现全身麻醉,对所有患者全身麻醉过程进行脑电信号监测,采用Lempel-Ziv复杂度C(n)对脑电信号进行复杂度分析。结果:脑电复杂度C(n)在麻醉前清醒状态下最高,麻醉诱导后迅速降低,在麻醉维持期保持相对稳定的较低数值,在复苏期逐渐升高。结论:Lempel-Ziv复杂度C(n)算法简单,对瞬态噪声有抗干扰能力。脑电复杂度分析能灵敏地反映麻醉深度变化,可用于实时检测全麻过程中的脑电活动。
Objective： To investigate the property of EEG complexity change under general anesthesia and to find a useful algorithm for real-time monitoring the depth of anesthesia. Methods： EEG was recorded in 10 patients during operation under general anesthesia by target controlled infusion ofpropofol and Lempel-Ziv complexity C （n） of EEG was computed. Results： The complexity C （n） of EEG remained high in awake state, dropped quickly after anesthesia induction, remained relatively steady in low level during anesthesia maintenance and rose gradually during recovery period. Conclusion： The algorithm of Lempel-Ziv complexity C （n） is easy to realize and is resistant to transient interference. Analysis of EEG complexity can detect the depth of anesthesia sensitively and could be used for monitoring brain activity under general anesthesia in real time.
出处
《中国医学物理学杂志》
CSCD
2009年第1期978-981,共4页
Chinese Journal of Medical Physics
关键词
脑电
麻醉
复杂度
EEG
anesthesia
complexity
