This issue of Cardiology Clinics, guest edited by Drs. Benjamin A. Steinberg and Jonathan P. Piccini, will focus on Atrial Fibrillation in Heart Failure. Topics include, but are not limited to Epidemiology of Atrial Fibrillation and Heart Failure, Pathophysiology, Unmet clinical needs and future trials, Randomized clinical trials of catheter ablation for the treatment of Atrial Fibrillation/Heart Failure, AF ablation, role for digitalis, His-bundle...