• Department of Anesthesiology,West City of Bazhong,Bazhong Sichuan 635500,China; 2Department of Anesthesiology,The First Affiliated Hospital of Zhengzhou University,Zhengzhou, Henan 450000,China; 3 Department of Anesthesiology,West China Hospital,Sichuan University,Chengdu Sichuan 610041,China;
LIN Yanjun., Email: linyanjun@163.com
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目的:探讨老年手术患者椎管内麻醉后应用异丙酚镇静,脑电双频指数、异丙酚血药浓度和镇静深度之间的相关性[1]。方法:48例ASAⅠ~Ⅱ级择期手术患者,分为老年组(65~85岁)和年轻组(18~40岁),每组24例。为尽快达到稳态血药浓度,采用靶控输注方式给药。异丙酚靶浓度从0.5 μg/mL起逐渐增加,直至患者对轻推无反应(意识消失),每个浓度维持5min。连续记录EEG参数,在每一稳态血药浓度末,记录BIS、95%SEF, 桡动脉取血(高效液相色谱法测定异丙酚血药浓度),并评定镇静深度(OAA/S评分法)。用Spearman’s等级相关进行相关分析,并计算预测概率 (Pk) 值。结果:两组BIS (r=0.935~0.955) 与镇静水平的相关性优于血药浓度(r =0.849~0.870)和95%SEF(r =0.503~0.571),BIS的Pk值高(0.942~0.972)。在同一镇静评分(OAA/S 4~1)时,老年组BIS值明显高于年轻组(P lt;0.01),而血药浓度低于年轻组(P gt;0.05)。结论:BIS在监测异丙酚镇静水平及预测意识消失方面有重要价值,在同一镇静评分时,老年人BIS值高于年轻人。

Citation: MA Youbing ,WANG Hongwei,LIN Yanjun.. Study for the Correlation Among Bispectral Index and Blood Propofol Concentration with Level of Sedation in the Elderly. West China Medical Journal, 2009, 24(8): 1991-1995. doi: Copy