【摘要】 对１０例患者研究了脑干听觉诱发电位（ＢＡＥＰ）潜伏期与异氟醚麻醉浓度定性及定量关系。全麻诱导采用２．５％硫喷妥钠（３～５ｍｇ／ｋｇ），阿曲库铵（０．６ｍｇ／ｋｇ）。气管插管后麻醉维持采用１．１５％、１．７３．％、２．３０％异氟醚及６０％Ｎ２Ｏ，肌松维持用阿曲库铵。记录麻醉前、诱导后，１．１５％、１．７３％、２．３０％及减至１．１５％异氟醚时ＢＡＥＰ峰潜期（ＰＬ）和峰间潜伏期（ＩＰＬ）值。结果表明，ＢＡＥＰ波ＶＰＬ能稳定反映异氟醚麻醉浓度变化，具有等级性并呈正相关关系，ＢＡＥＰＰＬ、各波正常值似可作为判断异氟醚麻醉深度的参考标准。更多还原

【Abstract】 The qualitative and quantitative relations between BAEP and concentrations of isoflurane were studied in ten selected patients. Anesthesia was induced with 2.5% thiopental 3-5mg. kg-1,and atracurium 0. 6 mg. kg-1. After tracheal intubation,anesthesia was maintained with a mixtune of isoflurane and 60%N2O. Muscle relaxation was maintained with intravenous atracurium 0. 6mg. kg-1.h-1. The peak latencies and interpeak latencies of BAEP were observed before anesthesia, and after anesthesin following isoflurane inhaled concentrations respectively at 1.15%, 1.73%, 2.30% and 1.15% In sequence. The results showed that there was a significant positive correlation between the peak latency of wave V and the corresponding concentration of isoflurane(p< 0. 01 ). The conclusion is that the peak latency of wave V may be considered as a paremetre for anesthesia depth.更多还原