抗心律失常药物的促心律失常作用(proarrhythmia),是指在给予抗心律失常药物后出现新的或更严重的心律紊乱。不同药物产生的促心律失常作用,在形式上、发生率、临床意义等方面可以有很大的差异。虽然在八十年代初期,临床及电生理实验已证实抗 The proarrhythmia of anti-arrhythmic drugs refers to the emergence of new or more serious heart rhythm disorders after administration of anti-arrhythmic drugs. Different drugs produce pro-arrhythmic effects, in terms of form, incidence, clinical significance and so can be very different. Although in the early eighties, clinical and electrophysiological experiments have proven resistant