The term cardiology is derived from the Greek words ‘cardia’ which refers to the heart and ‘logy’ meaning the study of. Cardiology is the study and treatment of disorders of the heart and the blood vessels. The field includes medical diagnosis and treatment of congenital heart defects, coronary artery disease, heart failure, valvular heart disease and electrophysiology. A person with heart disease or cardiovascular disease is usually referred to a cardiologist. The cardiology team is highly experienced in diagnosing and treating diseases of the cardiovascular system. The cardiologist advises some tests, and may perform some procedures, such as heart catheterizations, angioplasty, or inserting a pacemaker in order to achieve accurate diagnosis of the problem. There are three main types of cardiology procedures: Invasive, Non-invasive, and Interventional.