Subjects of the book are Heart Failure and Atrial Fibrillation, two emerging pathologies in the field of cardiology, to which many investigators are now addressing their research. Their diffusion in the sick population represents a major public health problem at the beginning of the third millennium. The volume aims to present the latest approaches to the management of heart failure and atrial fibrillation, emphasising in particular the intrinsic relation existing between them, the results after 10 years of biventricular pacing, the innovative pacing techniques now available, and the use of new drugs, devices or ablation procedures for the prevention and treatment of atrial fibrillation recurrences.