Ischemic Heart Disease (IHD) is an abnormal condition of the heart that often occurs during excitement and exertion when the heart needs more blood supply. The condition occurs due to a blockage of the arteries that supply blood to the heart, which is the consequence of a buildup of plaque in the arteries. As a result of lack of sufficient blood supply, the patient may suffer from recurrent chest pain and discomfort leading to a condition called angina pectoris.