Antianginal drugs

Angina or, more formally, angina pectoris, is caused by an imbalance between myocardial oxygen supply and myocardial oxygen demand; more specifically, angina results when myocardial oxygen supply is LESS THAN myocardial oxygen demand; Obviously, this imbalance can arise in DIFFERENT ways; each of following can lead to “O2 supply < O2 demand”: ................
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