Digitslis had been the drug of first choice for ventricular rate control in patients with AF,but when sympathetic tone is increased or in acute settings,it is often unsuccessful.

• 洋地黄类药物曾是控制快速房颤心室率的首选药物,但患者交感神经活动增加或处于应激状态时,其效果较差,然而,由于正性肌力作用,洋地黄仍应用于心衰合并快速房颤的患者。