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1、可乐定对左旋布比卡因硬膜外镇痛最低有效浓度的影响陈华军,杨海扣,拾翠翠淮安市妇幼保健院麻醉科江苏·淮安223002【摘要】目的探讨可乐定对左旋布比卡因硬膜外镇痛最低有效浓度的影响。方法选择拟在腰-硬联合麻醉下实施子宫切除患者120例,随机分成Ⅰ、Ⅱ、Ⅲ、Ⅳ组,每组30例,术毕行硬膜外自控镇痛(PCEA)。镇痛药物为左旋布比卡因,浓度分别为0.15%、0.125%、0.1%和0.075%,每组药物中含可乐定2μg/ml。观察记录术后24h内疼痛视觉模拟评分(VAS),镇痛泵有效按压次数及药物总用量。记录下肢运动神经阻滞情况以及不良
2、反应如恶心呕吐、心动过缓、低血压等。结果Ⅳ组术后4、8、16、24hVAS评分及24h内镇痛泵按压次数,药物总用量与其它3个组比较差异有统计学意义(P<0.01),Ⅰ、Ⅱ、Ⅲ组组间比较差异无统计学意义(P>0.05)。4个组患者不良反应组间比较差异无统计学意义。结论可乐定复合左旋布比卡因硬膜外镇痛,能增强左旋布比卡因镇痛效果,降低其最低有效浓度。关键词:可乐定;左旋布比卡因;硬膜外镇痛;有效浓度Theeffectofclonidineontheminimaleffectiveconcentrationoflevobupivaca
3、ineepiduralanalgesiaCHENHua-jun,YANGHai-kou,SHICui-cui.DepartmentofAnesthesiologyHealthCenterforWomenandChildren,HuaianJiangsu223002,China[Abstract]ObjectiveToobservetheeffectofclonidinehydrochlorideontheminimaleffectiveconcentrationoflevobupivacaineepiduralanalgesia
4、.Methods120casesexposedtocombinedspinal-epiduralanesthesia(CSEA)onHysterectomywererandomlydividedinto4groups(n=30):groupⅠ,groupⅡ,groupⅢandgroupⅣ.Allcaseswereappliedtopumpcontrolepiduralantalgic(PCEA)afterHysterectomywithlevobupivacaine.groupⅠreceivinglevobupivacaine0
5、.15%,groupⅡreceiving0.125%,groupⅢreceiving0.1%,andgroupⅣreceiving0.075%,allsolutioncontainsclonidinehydrochloride2μg/ml.theantalgiceffectofthesegroupswererecordedwithvisualanaloguescale(VAS),thepressingfrequencyandthedoseages,andobservethestatusofmotornerveblockandsi
6、deeffect.ResultsComparedwithgroupⅠ,groupⅡandgroupⅢ,groupⅣshowedsignificantlydifferenceinVASof4,8,16,24hourpostopertively,thepressingfrequencyandthedoseages(P<0.01).Nodifferenceinsideeffectwasobservedamongtheexperimentalgroups(P>0.05).ConclusionApplyingclonidinecombin
7、atinglevobupivacaineinepiduralanalgesiahasagoodantalgiceffect,andcandecreasetheminimaleffectiveconcentrationoflevobupivacaine.[Keywords]clonidine;levobupivacaine;epiduralanalgesia;effectiveconcentration左旋布比卡因(levobupivacaine)是长效酰胺类局麻药布比卡因的左旋体。而布比卡因是左旋体(levoclination)
8、和右旋体(dextroclination)等量混合的消旋体型(racemicmodification4),其中枢神经系统和心脏毒性主要来源于右旋体。左旋布比卡因去掉了右旋体,所以神经和心脏毒性明显降低,使用更安全。临床常用于椎管内麻醉和硬膜外术后镇痛。相比于布比