A patient with atherosclerotic heart disease experiences chest pain during exertion because: Select one: A. the coronary arteries suddenly spasm and cause a marked reduction in myocardial blood flow. B. tissues of the myocardium undergo necrosis secondary to a prolonged absence of oxygen. C. the ragged edge of a tear in the coronary artery lumen causes local blood clotting and arterial narrowing. D. the lumen of the coronary artery is narrowed and cannot accommodate increased blood flow.
A patient with atherosclerotic heart disease experiences chest pain during exertion because:
Select one:
A. the coronary arteries suddenly spasm and cause a marked reduction in myocardial blood flow.
B. tissues of the myocardium undergo necrosis secondary to a prolonged absence of oxygen.
C. the ragged edge of a tear in the coronary artery lumen causes local blood clotting and arterial narrowing.
D. the lumen of the coronary artery is narrowed and cannot accommodate increased blood flow.
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