七氟烷不同麻醉深度对冠心病非心脏手术患者围手术期心肌保护效应的比较

摘要

Objective To study the protective effects of sevoflurane at different anesthesia depths on periperative myocardial ischemia in coronary heart disease patients undergoing noncardiac surgery.Methods 96 patients with coronary undergoing noncardiac surgery were randomly divided into three groups:control group (Group C),high-concentration sevoflurane group (Group S 1) and low-concentration sevoflurane group (Group S2).Etomidate,Propofol,Cisatracurium Besilate and Fentanyl were used for intravenous anesthetic induction and maintenance of anesthesia.In addition,B ispectralindex (BIS) remained between 35 ～ 45 and 45 ～ 55 in groups S1 and S2,re spectively.BIS remained between 40 ～ 50 in group C.Perioperative hemodynamic changes,ECG ST-segment before induction of anesthesia,endotracheal immediate intubation and extubation were recorded.Plasma concentrations of cTnT,high sensitive cardiac troponin (hs-cTnT) and high sensitive ereaetive protein (hs-CRP) were detected with central venous blood before anesthesia induction and immediate extubation.Results Compared with group C,the incidences of hypertension,tachycardia,myocardial ischemia,proiosystole and atrial fibrillation were significantly reduced in groups S1 and S2 (P ＜ 0.05);The incidences of bradycardia and hypotension groups were significantly higher in group S1 (P ＜ 0.05).Compared with group S1,the incidences of hypotension,bradycardia,myocardial ischemia were significantly reduced in group S2 (P ＜ 0.05).Compared with group C,plasma concentrations of cTnT,hs-cTnT and hs-CRP were significantly reduced after endotracheal extubation in group S1 and S2 (P ＜ 0.05).Conclusion Myocardial protective effect is better and less risky for patients with coronary artery disease undergoing noncardiac surgery by inhalation of 1.0％ to 2.5％ sevoflurane to maintain BIS between 45 to 55.%目的 比较吸入不同浓度的七氟烷麻醉对冠心病非心脏手术患者围手术期心肌保护效应.方法 合并冠心病患者96例平均随机分为对照组(C组),高浓度七氟烷组(S1组)和低浓度七氟烷组(S2组).采用依托咪酯、丙泊酚、顺苯磺酸阿曲库铵和芬太尼麻醉诱导和维持.分别维持S1组和S2组BIS在35 ～ 45和45～55.C组BIS在40 ～ 50.麻醉诱导前、气管插管即刻和拔除气管导管即刻记录心电图ST段和在麻醉诱导前和拔管毕抽取静脉血栓测血清cTnT、超敏心肌肌钙蛋白T(hs-cTnT)和超敏C反应蛋白(hs-CRP)浓度.结果 与C组比较,S1组和S2组高血压、心动过速、心肌缺血、期前收缩和房颤的发生率显著降低(P＜0.05),S1组心动过缓和低血压发生率显著升高(P＜0.05);与S1组比较,S2组低血压、心动过缓和心肌缺血发生率显著降低(P＜0.05).与C组比较,S1组和S2组拔管毕时血清hs-cTnT、cTnT和hs-CRP浓度均降低(P＜0.05).结论 吸入1.0％～2.5％七氟烷保持BIS为45 ～ 55对冠心病非心脏手术患者围手术期心肌保护效应更佳,风险更小.