Cardiology is a branch of medical science that describes the study of the human heart.It consists of the diagnosis, treatment and the rehabilitative aspect of any alterations in the function of the heart. The field includes medical diagnosis and treatment of congenital heart defects, coronary artery disease, heart failure, valvular heart disease and electrophysiology. Cardiology is one of the most lucrative areas of medicine nowadays, considering the current rise in the incidence of heart-related diseases.