Carvedilol versus metoprolol, but which metoprolol?: Effect on inappropriate cardioverter-defibrillator therapy

摘要

Ruwald et al. (1) studied the benefit of carvedilol versus meto-prolol for inappropriate antitachycardia pacing (ATP), using data from the MADIT-CRT (Multicenter Automatic Defi-brillator Implantation with Cardiac Resynchronization Therapy) trial. In a following editorial comment, Raitt (2) discusses further the issue of inappropriate ATP. What is most surprising is that neither Ruwald et al. (1) nor Raitt (2) specify metoprolol as the tartrate or the succinate form.