Association of implantable defibrillator therapy risk with body mass index in systolic heart failure.

Objectives: To determine whether risk for implantable cardioverter-defibrillator (ICD) therapy varies by body mass index (BMI) in systolic heart failure (HF).

Background: It is unknown whether obesity increases sudden death risk in patients with systolic HF.

Methods: Secondary analysis of patients with HF, left ventricular ejection fraction ≤0.