Coronary Artery Disease
When one or more of these arteries get blocked the blood supply is reduced to the area of the heart muscle resulting in lack of nutrients and oxygen supply especially during exercise or exertion. This is often called "Coronary artery disease" (CAD) or "Atherosclerotic Heart disease".
Most people start experiencing chest pains or other symptoms like fatigue or shortness of breath when the block is over 50%. As the block gets narrower, symptoms increase either in intensity or frequency or both.
Heart attack or Myocardial Infarction occurs when the artery is completely occluded and the muscles die.
ECG, Treadmill, Echocardiogram will be done to diagnose CAD. Angiogram is done to show the accurate percentage of blocks in each artery.