The Influence of Left Ventricular Ejection Fraction on the Effectiveness of Cardiac Resynchronization Therapy: MADIT-CRT (Multicenter Automatic Defibrillator Implantation Trial With Cardiac Resynchronization Therapy)

Study Questions:

What is the relationship between left ventricular ejection fraction (LVEF) and clinical outcomes of patients with mild heart failure (HF) enrolled in the MADIT-CRT study, with a specific focus on the subset of patients with more preserved LVEF enrolled in the trial?