Objective To evaluate the efficacy and safety of intravenous diltiazem and cediland (lanatoside C) for treatment of rapid ventricular rate in atrial fibrillation and flutter.

目的比较静脉注射地尔硫、毛花甙C控制快速房颤动（房颤）房扑动（房扑）室率的即时疗效及安全性。

Objective To evaluate the efficacy and safety of intravenous fenopraine and lanatoside C for the treatment of rapid ventricular rate in patients with atrial fibrillation and congestive heart failure.

目的比较静脉罗帕酮与毛花苷丙治疗快速房颤动(简称房颤)并发充血性力衰竭(衰)患者室率的即时效及安全性。