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不同麻醉方式下长时间靶控输注阿曲库铵效应室浓度的变化

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摘要 目的观察七氟醚吸入麻醉或异丙酚-瑞芬太尼全凭静脉麻醉下长时间靶控输注阿曲库铵效应室浓度的改变及其肌松效应。方法40例择期手术患者(预计手术时间超过4h)随机分为两组:七氟醚吸入麻醉组(Ⅰ组)和异丙酚-瑞芬太尼组(Ⅱ组)。以TOF刺激方式,监测拇内收肌的颤搐反应作为肌松效果的判定指标。以诱导靶浓度2μg/ml开始效应室靶控输注阿曲库铵,当T1降至0%时,气管插管。术中调节效应室靶浓度以维持T1≤5%。记录两组阿曲库铵效应室浓度变化、4h时用药量、麻醉时间、恢复指数、停药至TOFR为0·7及0·9的时间。结果两组持续给药20min^4h期间阿曲库铵效应室浓度显著下降(P<0·05);Ⅰ组持续给药40min^4h期间效应室浓度显著低于Ⅱ组(P<0·05),且恢复指数、停药至TOFR为0·7、0·9的时间短于Ⅱ组(P<0·05)。结论七氟醚吸入麻醉和异丙酚-瑞芬太尼静脉麻醉下,维持相同的目标肌松,阿曲库铵效应室浓度均呈时间依赖性下降,且前者下降幅度明显大于后者,停药后肌松恢复更为迅速。
出处 《广东医学》 CAS CSCD 北大核心 2008年第6期992-994,共3页 Guangdong Medical Journal
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