摘要
目的 观察罗库溴铵在肝功能不全门脉高压病人中的肌松效应。方法 70例ASA I-Ⅱ级择期行上腹部手术的病人分为两组:门脉高压组(M组,n=36),对照组(C组,n=34),其中门脉高压组肝功能均属Child-Turcottee分级法Ⅱ级,对照组肝功能正常。两组病人麻醉诱导均为静脉注射咪唑安定0.02 mg·kg-1、异丙酚1.0 mg·kg-1、芬太尼5μg·kg-1和罗库溴铵0.6 mg·kg-1,同时进行肌松监测。麻醉维持采用吸入异氟烷及间断静脉注射芬太尼,罗库溴铵微量泵持续静注维持肌松,维持T1在10％-20％直至手术结束。记录罗库溴铵起效时间,TOF无反应时间,首次给药后,T110％恢复时间,停药后T125％恢复时间,恢复指数以及每30 min罗库溴铵维持用量。结果 M组病人肌松药起效时间、TOF完全阻断时间、首次给药后,T110％恢复时间、停药后T125％恢复时间及恢复指数比C组病人延长(P<0.01)。M组病人持续输注罗库溴铵用量明显小于C组病人(P<0.01)。结论 肝功能不全的门脉高压病人罗库溴铵起效、维持时间和肌松恢复时间明显延长,维持用量明显减少。
Objective Since rocuronium (R) is excreted unchanged in the urine and bile, thus the duration of action may be increased in patients with liver dysfunction. The purpose of this study was to evaluate the neuromuscular blocking effect of R in patients with portal hypertension. Methods Seventy ASAⅠ-Ⅱ patients (36 males, 34 females) aged 30-60 yrs were divided into 2 groups : portal hypertension group (n=36) (PH) and control group (C) (n = 34). The liver function of the patients in PH group was classified as Child-Turcottee grade Ⅱ while those in C group had no liver dysfunction. The patients were premedicated with intramuscular phenobarbital 0.1 g and atropine 0.5 mg. Anesthesia was induced with midazolam 0.02 mg·kg-1 , propofol 1.0 mg·kg-1 , fentanyl 5 μg·kg-1 and R 0.6 mg·kg-1 and maintained with isoflurane and intermittent i.v. boluses of fentanyl. R was continuously infused. The patients were mechanically ventilated after tracheal intubation. PETCO2 was maintained at 35-45 mm Hg . The N-M function was monitored by accelerography using TOF stimulation. (1) The onset time (from the end of R injection to maximal paralysis (T1=0). (2) Maximum depression time (the duration of completely no response to TOF stimulation. (3) Maintenance time (T1 returned to 10% ) . (4) recovery time (T1 returned to 25% after R infusion was stopped) and (5) recovery index (T1 returned from 25%-75%) were recorded. The amount of R infused every 30 min was also recorded. Results The two groups were comparable with respect to sex and age. The onset time and maximum depression time were significantly longer in PH group than in group C ( P <0.01) . The maintenance time , recovery time and recovery index were significantly shorter in group C than in group PH (P<0.01). The amount of R used was larger in group C than in group PH (P< 0.01) .Conclusion The onset of N-M blocking effect is slower, duration of action longer and less amount of R is needed to maintain muscle relaxation in patients with portal hypertension.
出处
《中华麻醉学杂志》
CAS
CSCD
北大核心
2004年第8期585-587,共3页
Chinese Journal of Anesthesiology
