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垂体中叶素对脓毒症大鼠心脏功能的影响

, PP. 634-637

Keywords: 垂体中叶素,脓毒症,大鼠,心脏功能

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Abstract:

目的探讨垂体中叶素(intermedin,IMD)对脓毒症大鼠心脏功能的影响。方法采用盲肠结扎穿孔术(cecalligationandpuncture,CLP)复制大鼠脓毒症模型,分为5组,分别为假手术组、CLP组、CLP+常规治疗组(CLP+CT)、CLP+CT+E-IMD早期治疗组、CLP+CT+L-IMD晚期治疗组,观察早期(CLP结束时)或晚期(CLP12h)给予IMD后大鼠心脏功能、心输出量、心脏指数、每搏指数、氧供、氧耗、血气及动物存活时间、存活率的变化。结果与假手术组比较,脓毒症后大鼠的心脏功能明显降低;采用常规治疗(包括输液、抗感染以及使用血管活性药物),尽管可以提高动脉血压和中心静脉压,但大鼠的心脏功能无明显改善;早期和晚期给予IMD可明显改善心脏功能;氧供和氧耗明显升高,其中早期给予IMD效果更好,与脓毒症大鼠相比,早期给予IMD后,氧供和氧耗分别升高了148.9%和172.2%;72h内死亡大鼠的平均存活时间达到23.15h,72h存活率为31.2%(5/16)。结论IMD对脓毒症大鼠的心脏功能有较好的治疗作用。

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