听觉诱发电位指数和脑电指数用于镇静深度监测的比较分析

The Comparison between Auditory Evoked Potential Index and Bispectral Index,Spectral Edge Frequency and Median Frequency in Monitoring the Depth of Sedation

目的比较听觉诱发电位指数和脑电指数监测异丙酚镇静深度的准确性。方法选择30例听力正常的手术病人,硬膜外联合腰麻阻滞后,微量泵泵注异丙酚,观察听觉诱发电位和脑电变化情况,并对相关数据进行分析。结果腰麻效果满意后,听觉诱发电位指数、脑电指数及血流动力学指标与基础值相比无显著性差异,听觉诱发电位指数有显著性差异(P<0.05)。结论听觉诱发电位指数和脑电指数都是监测异丙酚镇静深度的重要指标,听觉诱发电位指数对意识转变的监测更具优越性。

Objective To compare the accuracy between auditory evoked potential （ AEP） index and bispectral （ BIS）, spectral edge frequency （SEF） and median frequency （MF） in monitoring the depth of sedation in propofol anesthesia. Methods 30 operated cases with normal hearing were selected ; after epidural anesthesia combined with lumbar anesthesia, microamount of propofol was pumped in the patients ; an observation was made to the changes of AEP and EEG and analysis was made to the related data. Results Within satisfactory anesthesia, there was no obvious difference among the AEP index, EEG index and basic values while-there existed a significant difference in AEP index （ P 〈 0.05 ）. Conclusions AEP index is more accurate in monitoring the transition from unconsciousness to consciousness.