右美托咪啶用于全麻术后苏醒期患者镇静的研究

目的:观察右美托咪啶(Dexmedetomi-dine,DEX)对全麻术后苏醒期患者的安全性及适宜的镇静剂量。方法:拟行妇科开腹手术患者60例,ASAⅠ~Ⅱ级,年龄40~55岁,体重50~75 kg,手术时间1~2.5 h之间。麻醉诱导与维持均按公斤体重给予相同药物,术后转入麻醉恢复室(PACU)。将患者随机分为4组:生理盐水对照组(NS组)、右美托咪啶0.2μg/kg组(D1组)、右美托咪啶0.4μg/kg组(D2组)、右美托咪啶0.6μg/kg组(D3组)。观察并记录给药前(T1)、给药后5 min(T2)、30 min(T3)、拔管前(T4)、拔管后(T5)、出室时(T6)各组患者血流动力学指标的变化以及躁动评分(RS评分)、Ram-say镇静评分(RSS评分)、意识状态评分(OAAS评分)、脑电双频谱指数(BIS)和全麻身体舒适度评分(BCS评分)情况的变化,同时观察各组心血管不良事件的发生情况。结果:给药后3组心率、血压较给药前有所下降(P<0.05),在T2、T4、T5、T6时点,D2、D3组血压、心率低于其余两组(P<0.05);NS、D1组RS高于D2组、D3组(P<0.05);D3组OAAS和BIS低于其他各组(P<0.05);D3组发生再入睡和心动过缓的比率较高(P<0.05)。结论:右美托咪啶0.4μg/kg用于全麻术后苏醒期患者镇静是安全的,可明显提高麻醉苏醒质量。

Study of sedation effect with dexmedetomidine on patients after general anaesthesia

AIM: To observe the safety and the appropriate amount of sedation of dexmedetomidine on the recovery period after general anesthesia.METHODS: Sixty patients undergoing abdominal gynecological surgery after general anesthesia,aged 40-55 yrs,weight 50-75 kg,the operation time between 1-2.5 h.Patients were induced and maintained according to the same kilogram of body weight,then sent into the recovery room after surgery.They were randomly divided into four groups: Saline control group,D1 group: dexmedetomidine...