A 53-year-old male presents with recurrent chest pain on exertion. He is diagnosed with angina pectoris. The pain he experiences occurs when:

A 53-year-old male presents with recurrent chest pain on exertion. He is diagnosed with angina pectoris. The pain he experiences occurs when:





A. cardiac output has fallen below normal levels.
B. the myocardial oxygen supply has fallen below demand.
C. myocardial stretch has exceeded the upper limits.
D. the vagus nerve is stimulated.



Answer: B


PATHOPHYSIOLOGY

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