This book provides an extensive overview of various challenges posed by atrial fibrillation and treatment methodologies against them. Atrial fibrillation is a fast advancing epidemic linked with increased cardiovascular morbidity and mortality, and its prevalence has grown over the past few decades. In the last few years, the current understanding of varied mechanisms of this arrhythmia has lead to the betterment of our therapeutic strategies. Yet several clinicians still face challenges in management of this frequently encountered arrhythmia. This book discusses various topics associated with atrial fibrillation. It is our strong belief that this book will prove to be an informative and beneficial source of reference for scientists, cardiologists and electrophysiologists and it will act as a valuable source of information for readers.