|
七氟醚 异氟醚对维库溴铵增效作用的时间依赖性 |
|
丁学琴 王俊科 盛卓人
摘要 目的:观察1MAC七氟醚或异氟醚对维库溴铵增效作用的时间依赖性。方法:40例择期手术病人在异丙酚-芬太尼-N2O麻醉期间持续输注维库溴铵,维持90%的肌松,达到稳态后,病人随机吸入1MAC呼气末浓度的七氟醚或异氟醚,调整维库溴铵的注入速率,维持90%的肌松,观察吸入七氟醚或异氟醚后维库溴铵的注入速率随时间变化的趋势。结果:七氟醚、异氟醚都显著降低了维库溴铵的注入速率。此效应随吸入七氟醚或异氟醚时间的延长逐渐增加,吸入七氟醚或异氟醚90分钟后达到最大效应即维库溴铵的注入速率下降到最大值。最大下降率:七氟醚组为67.87%,异氟醚组为68.79%。结论:七氟醚、异氟醚都明显增强维库溴铵的肌松作用,其程度相近,且这种增效作用有显著的时间依赖性。 关键词 维库溴铵 七氟醚 异氟醚 神经肌肉接头
Time course of potentiation of vecuronium by sevoflurane and isoflurane Ding Xueqin,Wang Junke,Sheng Zhuoren.Department of Anesthesiology,First Affiliated Hospital,China Medical University,Shenyang 110001 Abstract Objective:To observe the time-dependent course of potentiation of vecuronium produced by 1MAC of end-tidal sevoflurane and isoflurane.Method:At the beginning ,a steady infusion rate of vecuronium to maintain 90% of neuromuscular block was established in 40 patient undergoing neurosurgical procedures under propofol-fentanyl-nitrous oxide-oxygen anesthesia.The patients were randomly assigned to receiving 1MAC end-tidal concentration of either sevoflurane (Group Sev) or isoflurane( Group Iso).Vecuronium infusion rate was adjusted to maintain 90% neuromuscular block.The change of infusion rate of vecuronium with time was observed after inhalation of Sev or Iso.Result:Sev and Iso decreased the infusion dosage of vecuronium in an exponential manner,maximal potentiation occurred 90 min after inhalation.Maximal reduction in infusion rate was 67.87% in group Sev and 69.87% in group Iso without the significant difference between them.Conclusion:Sev and Iso can potentate the muscular relaxation of vecuronium at similar degree in strong time-dependent way. Key words Vecuronium Sevoflurane Isoflurane Neuromuscular junction
研究表明七氟醚或异氟醚均可增强维库溴铵的肌松作用〔1~4〕,但对于七氟醚或异氟醚对维库溴铵的增效作用的时间依赖性的研究尚未见报道。本研究旨在观察1MAC七氟醚或异氟醚对维库溴铵增效作用的时间依赖性,供临床应用时参考。
资料与方法
40例ASAⅠ~Ⅱ级,年龄18~50岁拟在全麻下行择期手术的病人。病人无心血管系统、神经肌肉系统及肝肾疾病病史,术前未用影响神经肌肉功能的抗生素及其[1] [2] 下一页 上一个医学论文: 乙状结肠直肠膀胱术 下一个医学论文: 急性等容血液稀释对心脏手术病人血液动力学 氧供 氧耗和脑氧合的影响
|
|
|
|
|
|
|