[挥发性麻醉剂对犬脑电图、听觉诱发电位和体感诱发电位的影响]

[The effect of volatile anesthetics on EEG, auditory evoked potentials and somatosensory evoked potentials in dogs].

作者信息

Ono K, Yasuda A, Matsukawa S, Akama M, Hashimoto Y

机构信息

Department of Anesthesia, Nishitaga National Hospital, Sendai.

出版信息

Masui. 1997 Apr;46(4):471-7.

PMID:9128017

Abstract

We compared the changes in EEG and evoked potentials among dogs anesthetized with halothane (H), isoflurane (I) or enflurane (E). The mean frequency of EEG with H was higher than that with I and E at 1 and 2 MAC. The amplitude of the 5th wave of auditory brain stem response with H was larger than that with I and E at 2 MAC. In terms of the Pa wave of auditory middle latency response, the amplitude with H was larger than that with E at 1 MAC, and the incidence of the wave with H was higher than that with I and E at 2 MAC. The amplitudes of N2 and N3 waves of somatosensory evoked potentials with H and I tended to decrease with increasing MAC, whereas those with E increased temporarily at 1 MAC. The inhibitory effects on EEG and evoked potentials were different among three volatile anesthetics.

摘要

我们比较了用氟烷（H）、异氟烷（I）或恩氟烷（E）麻醉的犬的脑电图（EEG）和诱发电位的变化。在1和2倍最低肺泡有效浓度（MAC）时，H组EEG的平均频率高于I组和E组。在2倍MAC时，H组听觉脑干反应第5波的波幅大于I组和E组。就听觉中潜伏期反应的Pa波而言，在1倍MAC时，H组的波幅大于E组，在2倍MAC时，H组该波的发生率高于I组和E组。H组和I组体感诱发电位的N2和N3波波幅倾向于随MAC增加而降低，而E组在1倍MAC时暂时增加。三种挥发性麻醉药对EEG和诱发电位的抑制作用不同。