Every year thousands of people including doctors, medical students, paramedics, nurses, nursing students, and others involved in the care and treatment of cardiac patients, get introduced to the world of reading electrocardiograms (ECGs or EKGs). This skill is fundamental to understanding if a patient is having a problem with the rhythm of their heart, has an electrolyte problem, is receiving too much of a given medication, experiencing an infection or inflammation of the heart, has too much fluid around the heart, or are experiencing a myocardial infarction.While reading an electrocardiogram may seem daunting at first, this book was designed from my lectures used to train students, interns, residents and fellows, on how to read an electrocardiogram. Rather than memorizing facts, this book will walk you through the steps of how to read electrocardiograms from beginning to end using the same approach used by Cardiologists like myself.