艾司洛尔对心肺复苏大鼠心肌线粒体ATP酶活性的影响

目的 探讨艾司洛尔对心肺复苏后大鼠心肌线粒体ATP酶活性的影响.方法 66只雄性Wistar大鼠随机分为假手术(Sham)组、肾上腺素(AD)组、肾上腺素 艾司洛尔(AD Es)组,每组22只,制备窒息致大鼠心跳骤停模型,窒息10min后行心肺复苏,测定复苏后30、120、180min心肌线粒体ATP酶活性.复苏期间监测心电图、心率、体温、平均动脉压.结果 与Sham组相比,AD组复苏后心率加快(P＜0.01),AD、AD Es组复苏后心肌线粒体ATP酶活性降低(P＜0.01);与AD组相比,AD Es组ATP酶活性升高(P＜0.05或0.01).结论 艾司洛尔有保护复苏后大鼠心肌线粒体ATP酶活性的作用.

Effects of esmolol on ATPase activity in myocardial mitochondria during cardiopulmonary resuscitation in rats

Objective To investigate the effects of esmolol on ATPase activity in myocardial mitochondria after resuscitation in rats.Methods Sixty-six male Wistar rats were randomly allocated to three groups:sham group,AD group,AD+Es group.A cardiac arrest model was reproduced by asphyxiation in rats,and then CPR was performed in these animals after 10min asphyxia.The ATPase activity of myocardial mitochondria was determined at 30th,120th and 180th minute after resuscitation.ECG,MAP,HR and temperature were measured continuously.Results Heart rates were significantly higher after adrenaline when compared with sham group.Myocardial mitochondria ATPase activity was decreased significantly in both AD and AD+Es group compared with that of sham group(P<0.01),but ATPase activity was higher in AD+Es group than that in AD group(P<0.05 or 0.01).Conclusion Esmolol may protect ATPase activity in myocardial mitochondria after resuscitation in rats.