Electrocardiography (ECG or EKG) is the process of recording the electrical activity of the heart over a period of time usingelectrodes placed over the skin. It is a simple, useful and practical diagnostic test for cardiac diseases. It helps physicians tomake the correct diagnosis, evaluate myocardial function and monitor the efficacy of treatment. Now-a-days, a properclinical diagnosis is impossible without it. So, this is a widespread application not only in cardiology but also in otherbranches of medical sciences. This book, in short, describes most of the available changes in ECG pattern in different heartailments along with possible interpretations which are helpful for medical students and practicing physicians. This book ishighly informative and student-oriented book and provides expanded information on interpretation of ECG. It involvestables and schematic diagrams to facilitate the learning process. This book explains diagnostic criteria for common ECGdiagnosis. The chapters have been written by the renowned and internationally established experts. This book grasps andkeeps vital information, succinct text, and dynamic illustrations that facilitate learning in a highly visual approach.