两种麻醉方式对持续输注顺式阿曲库铵肌松效应的影响

目的比较七氟烷吸入麻醉与丙泊酚-瑞芬太尼全凭静脉麻醉对持续输注顺式阿曲库铵肌松效应的影响。方法选择全麻下手术病人40例,随机分为七氟烷吸入麻醉组(Ⅰ组)和丙泊酚-瑞芬太尼组(Ⅱ组),各20例。静脉注射顺式阿曲库铵0.15mg/kg后气管插管,术中持续输注顺式阿曲库铵,调节输注速率维持T1≤5%。记录顺式阿曲库铵输注速率、3h时用药量,恢复指数、停药至TOF比值为0.9的时间。结果与初始输注速率比较,两组持续给药30～180min期间顺式阿曲库铵输注速率下降(P<0.05),且Ⅰ组输注速率显著低于Ⅱ组,总体平均输注速率较Ⅱ组减少28%。但120min后两组输注速率无明显变化。两组恢复指数、停药到TOF比值为0.9的时间差异均无统计学意义(P>0.05)。结论持续输注顺式阿曲库铵维持恒定肌松水平,七氟烷麻醉与丙泊酚-瑞芬太尼全凭静脉麻醉均能呈时间依赖性增强其肌松作用,输注120min时达最大程度,且前者的增强效应大于后者,但对肌松恢复的影响无明显差别。

Effect of sevoflurane versus propofol-remifentanil anesthesia on neuromuscular blockade by continuous cisatracurium infusion

Objective To compare the effects of sevoflurane and propofol-remifentanil anesthesia on neuromuscular blockade produced by continuous cisatracurium infusion. Methods Forty ASA I or II patients undergoing selective surgery were randomly divided into sevoflurane and propofol-remifentanil anesthesia groups (n=20). Neuromuscular blockade was monitored using train-of-four (TOF) stimulation by recording the contraction force of the adductor pollicis muscle with a muscle relaxation monitor. A bolus dose of cisatra...