The second edition of this book provides an overview of electrocardiography from a pathophysiological basis. Refreshed with color illustrations, it incorporates new anatomic and electrophysiologic information as well as updated material on clinical applications of the electrocardiogram (ECG). Intended as a reference for students with a basic understanding of the ECG, the book focus is to provide the fundamental anatomic and electrophysiologic processes that lead to ECG changes rather than simple pattern recognition. Each chapter has key points and questions with comprehensive explanations so that the reader can assess their understanding of the contents. It can be utilized as a guide – chapter by chapter – or read cover to cover for a complete overview. Case studies are included at the end of the book that integrate the multiple principles of electrocardiography. The Second Edition of ECG Interpretation: From Pathophysiology to Clinical Application is anessential text for medical students, residents, fellows, physicians, and nurses in cardiology and clinical cardiac electrophysiology.