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小剂量右美托咪啶对脑功能区手术术中唤醒NI和血流动力学的影响 被引量:12

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摘要 目的观察小剂量右美托咪啶(Dex)对脑功能区手术术中唤醒NI(Narcotrend index)及血流动力学的影响。方法 50例无术中唤醒麻醉禁忌证择期行脑功能区手术患者,年龄20~40岁,美国麻醉医师协会(ASA)Ⅰ~Ⅱ级,随机分为2组,所有患者采用全凭静脉麻醉,唤醒前停用全身麻醉药。其中Dex观察组(n=25),负荷量右美托咪啶0.25μg/kg稀释至30mL静脉泵注,继以0.2μg.kg-1.h-1维持输注;对照组(n=25),以生理盐水30mL静脉泵注。监测并记录给药前(T0)、给药后(T1)、唤醒初期(T2)、配合指令期(T3)、唤醒期结束(T4)、唤醒期结束5min(T5)的各期的NI值、平均动脉压(MAP)、心率(HR)。结果给药前T0两组HR、MAP比较差异无统计学意义(P>0.05)。两组间HR在T2、T3、T4时比较差异有统计学意义(P<0.05),对照组明显高于Dex组,在T5时比较差异无统计学意义(P>0.05)。两组MAP在T1、T2、T3、T4时比较差异有统计学意义(P<0.05),对照组均显著高于Dex组,在T5时比较差异无统计学意义(P>0.05)。结论右美托咪啶以负荷剂量0.25μg/kg,继以0.2μg.kg-1.h-1维持输注脑功能区,手术术中唤醒产生明显镇静效应,能减轻应激反应,不会降低NI值而影响唤醒效果,同时降低平均动脉压,能维持麻醉期间的血流动力学更加稳定。
作者 郭瑞 何婉雯
出处 《重庆医学》 CAS CSCD 北大核心 2012年第31期3314-3316,共3页 Chongqing medicine
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同被引文献97

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