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.

Question

Quizplus · Accepted Answer

Angina pectoris is typically caused by a reduced myocardial oxygen supply in relation to demand. This often occurs during exertion or stress, when oxygen demands increase and the coronary arteries are unable to provide adequate blood flow to the heart muscle.

A 53-Year-Old Male Presents with Recurrent Chest Pain on Exertion