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双频指数调控老年人硬膜外不同浓度罗哌卡因复合全麻的研究 被引量:2

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摘要 目的:探讨在脑电双频指数(bispectral index,BIS)反馈调控下,老年人硬膜外三种浓度的罗哌卡因复合异氟醚麻醉时对血流动力学、异氟醚用量以及术中应激的影响。方法:择期行上腹部胃肠手术的老年患者60例,根据硬膜外罗哌卡因用药浓度的不同随机分成四组。A组为对照组,硬膜外腔推注生理盐水+单纯异氟醚(ISO)吸入麻醉;B组为硬膜外腔推注0.2%罗哌卡因(R)+ISO;C组为硬膜外腔推注0.375%R+ISO;D组为硬膜外腔推注0.5%R+ISO。术中通过调节异氟醚吸入浓度维持BIS值在50~60之间。术中监测并每隔5min记录吸入异氟醚浓度(FIiso)、呼末异氟醚浓度(FE'iso)、SBP、DBP和HR;分别于手术开始前(T1)、手术开始1h(T2)及2h(T3)抽血测皮质醇及白介素6(IL-6)。结果:①C、D两组术中平均MAP较低,每5分钟的变化值较小,与A组比较,有显著性差异(P<0.05),B组与A组比较,无显著性差异(P>0.05)。②C组和D组的术中平均吸入异氟醚浓度(FIiso)及其每5分钟变化值明显低于A组(P<0.05);C、D两组分别减少术中异氟醚用量约21%和23%,与A组比较,有显著性差异(P<0.05),B组与A组比较,无显著性差异(P>0.05)。③A组和B组血浆皮质醇及IL-6浓度在T2和T3均明显高于T1(P<0.05),C、D两组血浆皮质醇升高不明显,IL-6在T3时升高,其中D组升高幅度较小,与A组比较,有显著性差异(P<0.05)。结论:在BIS反馈调控下,0.375%、0.5%罗哌卡因硬膜外复合全麻时术中MAP适度降低,波动较小,且异氟醚用量分别减少约21%和23%,并有效降低围术期血浆皮质醇及IL-6的浓度。
出处 《中国医药导报》 CAS 2009年第33期64-65,共2页 China Medical Herald
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共引文献151

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