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右美托咪定复合七氟烷全麻对老年患者术后早期认知功能的影响 被引量:35

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摘要 目的研究分析右美托咪定(Dex)复合七氟烷全麻对老年患者术后早期认知功能的影响。方法全麻下行开腹手术老年患者60例(ASAⅠ~Ⅱ),随机分为观察组和对照组,观察组(D组):七氟烷全麻加用Dex,在气管插管后采用注射泵以0.5μg/(kg.h)速率持续静脉输注Dex,手术结束前30 min停止输注;对照组(C组)以相同方法静脉注射0.9%氯化钠液。分别在术前(T0)、术后5 min(T1)、拔管前15 min(T2)、拔管后30 min(T3)记录平均动脉压(MAP)、心率(HR)和脉搏血氧饱和度(SpO2)值。记录患者从停止吸入药到自主呼吸的恢复时间、呼之睁眼时间、拔管时间和定向力恢复时间。并在手术前1 d(术前)和手术后1 d(术后)对两组患者进行简易智力状态检查法(MMSE)的测试,计算出患者术后认知功能障碍(POCD)的发生率。结果 D组术后MAP、HR、SpO2与术前比较,差异无统计学意义(P>0.05)。D组苏醒时间为(11.7±3.0)min,C组为(11.1±2.7)min,两组差异无统计学意义(P>0.05)。D组术后MMSE评分为26.35±4.69,C组为22.81±5.62,两组比较差异有统计学意义(P<0.05),D组患者的手术后POCD发生率为20.0%,比C组低(23.3%),差异有统计学意义(P<0.05)。结论在七氟烷用药基础上加用Dex,能使七氟烷全麻患者在恢复过程中血流动力学更平稳,不延长拔管和苏醒时间,能使老年患者术后早期认知功能障碍的发生率降低。
出处 《广东医学》 CAS CSCD 北大核心 2012年第14期2172-2174,共3页 Guangdong Medical Journal
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