美托洛尔(Metoprolol,即甲氧乙心安)是一种不具内源性拟交感性的心脏选择性β1受体阻滞剂,其β2受体阻滞较弱。我们用其治疗术中心动过速(100次/min)、降低心肌做功与耗氧取得了较好效果,报告如下。各种手术病人56例,男32例、女24例。平均年龄49.1±15.7岁,平均体重59.80±9.1 Metoprolol (Metoprolol) is a cardioselective β1 blocker with no endogenous sympathomimetics, with a weak block of β2 receptors. We use its treatment of intraoperative tachycardia (100 times / min), reduce myocardial work and oxygen consumption achieved good results, the report is as follows. 56 cases of various surgical patients, 32 males and 24 females. The average age was 49.1 ± 15.7 years and the average body weight was 59.80 ± 9.1