Comparison of Auditory Evoked Potential and Bispectral Index Devices with Standard Clinical Practice During Scoliosis Surgery
- VernacularTitle:脊柱侧凸矫正术患者听觉诱发电位指数与脑电双频谱指数的比较
- Author:
Qiuhua ZHAO
- Publication Type:Journal Article
- Keywords:
Evoked potentials;
Auditory;
Electroencephalogram;
Scoliosis
- From:
Journal of Medical Research
2006;0(08):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective To investigate the discriminatory power of Auditory Evoked Potential and Bispectral Index devices on consciousness or consciousless state of patients during intraoperative wake-up test and recovery from scoliosis surgery with sevoflurane-remifentanil anesthesia.Methods Thirty ASA Class I or II adolescents undergoing scoliosis surgery under sevoflurane-remifentanil anesthesia were randomly divided into three groups: standard clinical practice (control), AEP-guided, and BIS-guided. After induction of general anesthesia remifentanil was infused at the rate of 0.3 ?g/(kg?min). At the beginning of wake-up test, the circuit was opened while the vaporizer was turned off , and the rate of remifentanil infusion was decreased to 0.05 ?g/(kg?min). Anesthesia was started again as soon as the patients had movements to command. The AAI, BIS, and end-tidal sevoflurane concentration at the time of before induction (T0), circuit opened(T1), spontaneously breathing recovered (T2), patients movement to command (T3), tracheal extubation (T4) and emergence from anesthesia (T5), as well as the time of spontaneously breathing recovered, patients movement to command during wake-up test, tracheal extubation and emergence from anesthesia were recorded.Results Comparing with control group, AAI and BIS increased at T1 both in AEP-guided and BIS-guided group (P
