The effects of nitrous oxide on the auditory evoked potential index during sevoflurane anaesthesia

被引：19

作者：

Barr, G

Anderson, R

Jakobsson, J ^{[1
]}

机构：

[1] Sabbatsbergs Hosp, Dept Anaesthesia, S-11382 Stockholm, Sweden

[2] Karolinska Hosp, Dept Cardiothorac Anaesthet & Intens Care, S-10401 Stockholm, Sweden

来源：

ANAESTHESIA | 2002年 / 57卷 / 08期

关键词：

anaesthetics; volatile; sevoflurane; gases; nitrous oxide; monitoring; evoked potentials;

D O I：

10.1046/j.1365-2044.2002.02693.x

中图分类号：

R614 [麻醉学];

学科分类号：

100217 ;

摘要：

We have studied the effects of nitrous oxide on the auditory evoked response index (AAI(TM)-index) derived from the A-line monitoring device during sevoflurane anaesthesia in 21 patients undergoing minor ambulatory surgery. During sevoflurane anaesthesia with an AAI(TM)-index < 30, the addition or withdrawal of nitrous oxide in a concentration of 66% end tidal did not show any linear dose dependent change in AAI(TM)-index. However, comparing nitrous oxide > 40% to nitrous oxide < 10% end tidal concentration the AAI(TM)-index did decrease, p < 0.05. The AAI(TM)-index is either non-linear at deeper anaesthetic levels or is insensitive to the anaesthetic effects of nitrous oxide in terms of MAC-multiples.

引用

页码：736 / 739

页数：4

共 19 条

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