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对40例心律失常患者静脉注射美多心安(0.1mg/kg),结果表明:①阵发性室上速终止者为20例中7例(35%),注药后5.3min恢复窦律;阵发性房颤或房扑中4例(30%)心室率减慢≥30%;频发室性早搏减少≥85%者2例(20%);②6例房室折返性心动过速终止部位在房室结前传,1例房室结折返性心动过速在慢径路前传;③窦功能正常人窦房结功能抑制轻;④血压轻度降低。
40 cases of arrhythmia patients intravenous metoprolol (0.1mg / kg), the results showed that: ① paroxysmal supraventricular tachycardia terminator was 20 cases in 7 cases (35%), sinus rhythm was restored 5.3min after injection; Paroxysmal atrial fibrillation or atrial flutter in 4 cases (30%) decreased ventricular rate ≥ 30%; frequent premature ventricular premature beats ≥ 85% in 2 cases (20%); ② 6 cases of atrioventricular reentrant tachycardia termination Atrioventricular node previa, 1 case of atrioventricular nodal reentrant tachycardia in slow pathway prenatal; sinus function normal sinus node function inhibition; ④ mild decrease in blood pressure.