室上性(SV)心律失常很常见,抗心律失常药物的目的是控制心室率和转复窦性心律。但许多药物有不足之处,如洋地黄转复窦律的疗效低,异搏定有房室阻滞、心肌收缩力减弱和低血压副作用,索他洛尔和氟卡胺有致心律失常作用。许多研究表明镁可用于治疗各种心律失常,但缺乏前瞻性、随机、 Supraventricular (SV) arrhythmias are common, and antiarrhythmic drugs are designed to control ventricular rate and to reverse sinus rhythm. However, many drugs have shortcomings, such as digitalis to reverse the low efficacy of sinus rhythm, verapamil has atrioventricular block, myocardial contractility and hypotension side effects, sotalol and flecainide have arrhythmia. Many studies show that magnesium can be used to treat a variety of arrhythmias, but the lack of prospective, randomized,