Cardiology refers to the branch of medicine that focuses on the diagnosis and treatment of conditions that affect blood vessels and the heart. It encompasses the study of a wide range of cardiovascular system disorders. Some of the major cardiovascular system disorders include acute coronary syndrome, myocardial infarction, atherosclerosis, restenosis, angina pectoris, coronary heart disease, cardiac arrest, disorders of the pericardium, disorders of the heart valves, congenital heart defects, and diseases of the blood vessels. Cardiology has several subspecialties including echocardiography, nuclear cardiology, cardiac electrophysiology, and interventional cardiology. Treatment of cardiovascular diseases makes use of a number of devices and instruments such as defibrillators and balloons, stethoscopes, pacemakers, and artificial hearts. This book provides comprehensive case studies related to various areas of cardiology including studies on valvular heart disease, congenital heart disease, hypertension, cardiomyopathy, arrhythmia, vascular disease, cardiac sarcoidosis, cardio-obstetrics, cardio-oncology, and congestive heart failure. The extensive content of this book provides the readers with a thorough understanding of the subject.