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中/长链脂肪乳对老年大鼠罗哌卡因心血管毒性阈值的影响及复苏效果 被引量:1

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摘要 目的观测中/长链脂肪乳(MLE)预治疗对老年大鼠罗哌卡因心血管毒性阈值的影响及复苏效果。方法健康雄性SD老年大鼠24只,随机分为两组:C组(C1组、C2组)、M组(M1组、M2组)。大鼠腹腔内注射氯胺酮100mg/kg,动、静脉及气管插管;监测心电图、有创血压。C组、M组分别泵注0.9%氯化钠注射液、200g/LMLE,速度为3mL/(kg.min)。5min后两组泵注0.75%盐酸罗哌卡因注射液10mg/(kg.min)直至心跳停止。记录出现心律失常、血压较基础值下降20%、心跳停止时的罗哌卡因总量。心跳停止30s后胸外按压,同时C1组与M1组、C2组与M2组分别静脉注射0.9%氯化钠注射液、200g/LMLE5mL/kg后0.5mL/(kg.min)持续输注,记录5min和10min的复苏成功率。结果 M组出现心律失常、血压下降20%、心跳停止时的罗哌卡因剂量明显高于C组(P<0.05)。C1组、C2组在复苏10min后成功率为50%,高于M1组与M2组,但组间差异无统计学意义(P>0.05)。结论老年大鼠预先输注MLE后罗哌卡因心血管毒性阈值升高,而MLE的复苏效果与生理盐水相比无差异。
出处 《广东医学》 CAS CSCD 北大核心 2010年第10期1265-1267,共3页 Guangdong Medical Journal
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