Table VI.

Effects of Diltiazem and Verapamil in the Treatment of Common Arrhythmias

Effective

Sinus tachycardia

Supraventricular tachycardia

AV nodal reentrant PSVT

Accessory pathway reentrant PSVT

SA nodal reentrant PSVT

Atrial reentrant PSVT

Atrial flutter (ventricular rate decreases but the arrhythmia only occasionally converts)

Atrial fibrillation (ventricular rate decreases but the arrhythmia only occasionally converts)

Ineffective

Nonparoxysmal automatic atrial tachycardia

Atrial fibrillation and flutter in WPW syndrome (ventricular rate may not decrease)

Ventricular tachyarrhythmias*

AV indicates atrioventricular; PSVT, paroxysmal supra‐ventricular tachycardia; SA, sinoatrial; and WPW, Wolff‐Parkinson‐White syndrome. *There is limited experience in this area. Adapted from Frishman and Sica. 85