主动脉瓣返流对顺式阿曲库铵临床药效学的影响

【目的】 对比研究顺式阿曲库铵在主动脉瓣关闭不全(AI)中重度主动脉瓣返流患者诱导阶段药效学的改变&#65377;【方法】 30例患者纳入此项研究中:实验组选择主动脉瓣关闭不全,中重度返流择期行主动脉瓣瓣膜替换术患者15例(AI组)&#65377;另选择15例行普通外科手术的非心脏病患者作为对照组(C组)&#65377;两组患者均给予芬太尼5 μg/kg + 异丙酚0.5 ~ 2 mg/kg + 顺式阿曲库铵0.1 mg/kg(2倍ED95)麻醉诱导,麻醉维持采用异丙酚 + 瑞芬太尼的全凭静脉麻醉方式&#65377;应用TOF-WATCH SX加速度仪记录顺式阿曲库铵的起效时间&#65380;无反应时间&#65380;临床作用时间及恢复指数&#65377;【结果】 AI组的起效时间(min)较C组明显延长 (5.6 ± 0.8 vs 3.4 ± 0.4,P < 0.001)&#65377;两组患者的恢复时间和恢复指数差异没有显著性&#65377; 【结论】 顺式阿曲库铵用于中重度主动脉关闭不全患者的麻醉诱导,和对照组比较药物起效时间明显延长,但持续时间恢复指数并没有区别&#65377;

Effect of Aortic Valve Regurgitation on Pharmacodynamics of Cisatracurium

Objective]The purpose of this study was to investigate the effect of severe aortic valve incompetence on the pharmacodynamics of cisatracurium.Methods]Thirty patients were enrolled in this study:15 patients with severe aortic valve incompetence scheduled for aortic valve replacement were included in the study group(AI-group)and 15 patients without heart disease undergoing general surgical operations were allocated into the control group(C-group).Anesthesia was induced with fentanyl 5 μg/kg.propofol 1.5～2 mg/kg and cisatracurium 0.1 mg/kg and maintained by total intravenous anesthesia with propofol-remifentanil infusion.Degree of neuromuscular block was measured by train-of-four ratio using TOF-WATCH acceleragraph monitor.Onset time(from administration of cisatracurium to T1=0),total twitch suppression time,the time for spontaneous recovery of T1 to 25%and 75%.and the recovery index were recorded respectively.Results]The onset time of cisatracurium was significantly longer in the AI group compared to the control group(5.6±0.8 min vs 3.4 ±0.4 min.P＜0.001.However.there was no difference in the recovery time between the two groups.Conclusion]We demonstrated that the onset of cisatracurium was delayed in the patients with severe aortic regurgitation in comparison to those without heart disease.