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Ischemic heart disease is a condition of recurring chest pain or discomfort that occurs when a part of the heart does not receive enough blood.his condition occurs most often during exertion or excitement, when the heart requires greater blood flow. Ischemic heart disease, also called coronary heart disease, is common in the United States and is a leading cause of death worldwide.
Myocardial ischemia occurs when the blood flow through one or more of your coronary arteries is decreased. The low blood flow decreases the amount of oxygen your heart muscle receives.Myocardial ischemia can develop slowly as arteries become blocked over time.Or it can occur quickly when an artery becomes blocked suddenly. Conditions that can cause myocardial ischemia include: 1  Coronary artery disease (atherosclerosis).he low blood flow decreases the amount of oxygen your heart muscle receives. Myocardial ischemia can develop slowly as arteries become blocked over time. Or it can occur quickly when an artery becomes blocked suddenly. Conditions that can cause myocardial ischemia include: 1  Coronary artery disease (atherosclerosis).