Unfortunately, none of these trials were designed to compare CRT pacemaker (CRT-P) with CRT defibrillator (CRT-D). In the COMPANION trial, which had 3 study arms, no head-to-head comparison between ...

Optimal medical therapy alone Optimal medical therapy and biventricular pacemaker (CRT-P) Optimal medical therapy and biventricular defibrillator (CRT-D) The combined primary end point of ...