What is CRT-D?
CRT-D is a type of biventricular pacing (helps both ventricles contract at the same time). Its indications differentiate CRT-D from other forms of pacing. In practical terms, patients with bradyarrhythmia receive a conventional pacemaker, patients with heart failure alone receive CRT-P (pacing alone) and patients with tachyarrhythmia alone receive a conventional implantable cardioverter defibrillator (ICD). To receive CRT-D, however, patients would have two indicated diagnoses: heart failure and ventricular tachyarrhythmia (VT).
