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静脉输注左旋布比卡因与利多卡因混合液对大鼠心脏毒性的实验研究

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摘要 目的探讨左旋布比卡因与利多卡因混合应用对心脏毒性反应的影响。方法Wistar大鼠48只,随机分为4组,每组12只。分别静脉注射不同混合液:A组0.5%左旋布比卡因+等量的2%利多卡因,B组0.5%布比卡因+等量的2%利多卡因,C组0.5%左旋布比卡因+等量的生理盐水,D组2%利多卡因+等量的生理盐水,速度均为0.4 mL/(kg.min)。输注相应的局麻药后,记录出现心律失常(DYS)、心脏停搏(ASYS)2个中毒点的时间、计算输入局麻药累积剂量。在各点采动脉血,用高效液相色谱仪测血浆中局麻药浓度。结果C、D 2组发生DYS、ASYS时局麻药的累积剂量、血药浓度大于A组(P<0.05),A组发生DYS、ASYS时局麻药的累积剂量、血药浓度大于B组(P<0.05)。结论0.5%左旋布比卡因与2%利多卡因混合液的应用增加了心脏毒性,相同浓度的布比卡因与利多卡因混合液心脏毒性更是甚于前者。
出处 《江西医学院学报》 CAS 2008年第4期54-55,61,共3页 Acta Academiae Medicinae Jiangxi
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