An imbalance between myocardial functional requirements and the capacity of the CORONARY VESSELS to supply sufficient blood flow. It is a form of MYOCARDIAL ISCHEMIA (insufficient blood supply to the heart muscle) caused by a decreased capacity of the coronary vessels.

Synonyms: Disease, Coronary Heart, Coronary Diseases, Coronary Disease, Coronary Heart Disease, Coronary Heart Diseases, Heart Diseases, Coronary, Diseases, Coronary Heart, Disease, Coronary, Diseases, Coronary, Heart Disease, Coronary