Cardiology is a medical specialty that deals with diagnosis and treatment of heart disorders for human and animals. Adult and pediatric cardiologists cater to congenital heart diseases, cardiac arrest, coronary artery diseases, and valvular heart diseases. Owing to the steep increase in the number of patients suffering with cardiac strokes, which are often fatal in nature; acute coronary syndrome (ACS), Angina pectoris, Atherosclerosis, Coronary heart disease, Myocardial infarction (heart attack) the clinical importance of cardiology is extremely high.Cardiology is the branch of medicine that deals with diseases and abnormalities of the heart. Coronary heart disease (CHD) is epidemic in India and one of the major causes of disease-burden and deaths. The precise causes of death in urban Chennai and rural areas of Andhra Pradesh have revealed that cardiovascular diseases cause about 40% of the deaths in urban areas and 30% in rural areas. The adult prevalence has increased in urban areas from about 2% in 1960 to 6.5% in 1970, 7.0% in 1980, 9.7% in 1990 and 10.5% in 2000; while in rural areas, it increased from 2% in 1970, to 2.5% in 1980, 4% in 1990, and 4.5% in 2000.