1.A condition marked by severe pain in the chest, often also spreading to the shoulders, arms, and neck, owing to an inadequate blood supply to the heart.

2.Imbalance between O2 demand and O2 supply.

DEMAND DEPENDS ONSUPPLY DEPENDS
1.Hr
2.Contractility
3.Wall tension		1.Regional Myocardial blood flow
2.Coronary Blood Flow
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