罗库溴铵对维族患者全麻诱导时熵指数的影响

目的 探讨罗库溴铵对维族患者全麻诱导时熵指数的影响.方法 择期行全麻手术的维族患者40例,性别不限,年龄20～50岁,体重45～70kg,ASA分级Ⅰ或Ⅱ级,采用随机数字表法,将患者随机分为2组(n=20):生理盐水对照组(NS组)和罗库溴铵组(R组).靶控输注异丙酚,初始血浆靶浓度为2μg/ml,每隔4 min递增0.5μg/ml,直至反应熵(RE)降至45并维持4 min,血浆浓度和效应室浓度平衡时,R组静脉注射罗库溴铵0.6 mg/kg,NS组给予等容量生理盐水,3 min后静脉注射芬太尼3μg/kg诱导气管插管后行机械通气.于麻醉诱导前即刻(T0)、注射罗库溴铵前(T1)、注射后2 min(T2)、气管插管后即刻、1、2和3 min时(T3-6)记录状态熵(SE)和RE,并计算RE-SE差值.结果 与NS组相比,R组T3,4时RE值降低,T2-5时RE-SE差值降低(P＜0.05).结论 罗库溴铵可降低维族患者全麻诱导时RE值和RE-SE差值的增高幅度,可能影响熵指数监测麻醉深度的准确性.

Abstract：

Objective To investigate the effect of rocuronium on spectral entropy during induction of general anesthesia in patients of Uygur nstionality. Methods Forty ASA Ⅰ or Ⅱ patients (Uygur nationality) of both sexes, aged 20-50 yr, weighing 45-70 kg, undergoing elective surgery under general anesthesia, were divided into 2 groups ( n = 20 each): normal saline (NS) group and rocuronium group (group R). Anesthesia was induced with target-controlled infusion of propofol. The initial target plasma concentration wan net at 2 μg/ml. The concentration wan then increased by 0.5 μg/ml every 4 min until response entropy (RE) was decreased to 45 and maintained for 4 min. When the plasma concentration was equal to the effect-site concentration, iv rocuronium 0.6 mg/kg was injected in group R, while group NS received the equal volume of NS instead. Fentanyl 3 μg/kg was injected intravenously at 3 min after recuronium administration. The patients were tracheal intubated and mechanically ventilated. State entropy (SE) and RE were recorded immediately before induction (baseline, To), before rocuronium administration (T1), 2 main after rocuronium administration (T2) and at 0, 1, 2 and 3 min after intubation (T3-6). The difference between RE and SE wan calculated. Results The RE value at T3 and T4 and the difference between RE and SE at T2.5 were significantly lower in group R than in group NS ( P ＜ 0.05). Conclusion Rocuronium can decrease the RE value and degree of increase in the difference between RE and SE during induction of general anesthesia in patients of Uygur nationality, which may affect the accuracy of spectral entropy in monitoring the depth of anesthesia.

Effect of rocuronium on spectral entropy during induction of general anesthesia in patients of Uygur nationality

Objective To investigate the effect of rocuronium on spectral entropy during induction of general anesthesia in patients of Uygur nstionality. Methods Forty ASA Ⅰ or Ⅱ patients (Uygur nationality) of both sexes, aged 20-50 yr, weighing 45-70 kg, undergoing elective surgery under general anesthesia, were divided into 2 groups ( n = 20 each): normal saline (NS) group and rocuronium group (group R). Anesthesia was induced with target-controlled infusion of propofol. The initial target plasma concentration wan net at 2 μg/ml. The concentration wan then increased by 0.5 μg/ml every 4 min until response entropy (RE) was decreased to 45 and maintained for 4 min. When the plasma concentration was equal to the effect-site concentration, iv rocuronium 0.6 mg/kg was injected in group R, while group NS received the equal volume of NS instead. Fentanyl 3 μg/kg was injected intravenously at 3 min after recuronium administration. The patients were tracheal intubated and mechanically ventilated. State entropy (SE) and RE were recorded immediately before induction (baseline, To), before rocuronium administration (T1), 2 main after rocuronium administration (T2) and at 0, 1, 2 and 3 min after intubation (T3-6). The difference between RE and SE wan calculated. Results The RE value at T3 and T4 and the difference between RE and SE at T2.5 were significantly lower in group R than in group NS ( P ＜ 0.05). Conclusion Rocuronium can decrease the RE value and degree of increase in the difference between RE and SE during induction of general anesthesia in patients of Uygur nationality, which may affect the accuracy of spectral entropy in monitoring the depth of anesthesia.