Myocardial ischemia. When the heart muscle can't get enough blood flow to supply its needs we call that ischemia. Narrowed arteries, anemia, overgrown muscle and other things can cause it. Chest pain, weakened heart muscle, rhythm problems and other abnormalities may result. It is treated by a combination of therapies.
See below. Myocardial ischemia refers to decreased blood supply and oxygen to the heart muscle. This usually is the result of partial blockage of blood flow due to plaque build up or increased demand for flow such as exercise. It can also be due to spasm of the artery often due to cigarette smoking which results in decreased blood flow. Ischemia often presents as chest discomfort but it can be asymptomatic.