A nurse is reviewing coronary collateral circulation and perfusion pressures. Which of the following statements is true regarding myocardial perfusion?

Question

Nursing · Cardiovascular Nursing

Verified Solution4 OptionsUpdated: October 2026👁️1 View

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Correct answer

Myocardial perfusion is greatest during diastole, and if compromised, the heart rate increases to compensate, shortening diastole time.

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Answer 1

Myocardial perfusion is greatest during diastole, and if compromised, the heart rate increases to compensate, shortening diastole time.

Answer 2

Perfusion pressures are unaffected by aortic diastolic pressure (ADP).

Answer 3

If coronary arterial compression or occlusion occurs, the heart rate decreases to compensate for decreased perfusion.

Answer 4

The greatest flow of blood into the myocardium occurs during systole.

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