Cardiac Resynchronization Therapy Reduces Left Atrial Volume and the Risk of Atrial Tachyarrhythmias in MADIT-CRT (Multicenter Automatic Defibrillator Implantation Trial with Cardiac Resynchronization Therapy)

Study Questions:

Does cardiac resynchronization therapy (CRT) result in reductions in left atrial volume (LAV) and in turn translate into a subsequent reduction in the risk of atrial tachyarrhythmias (ATs)?