2313

Coronary artery blood flow occurs predominantly during:
A. atrial systole
B. ventricular systole
C. ventricular diastole
D. isovolumic contraction

Significant coronary artery disease is present when the
percent decrease in coronary artery- diameter is at least:
A. 90%
B. 50%
C. 70%
D. 30%

Which of the following pathologies would most likely affect
coronary artery circulation?
A. tricuspid stenosis
B. tricuspid regurgitation
C. aortic regurgitation
D. mitral stenosis

An increase in left ventricular diastolic pressure may have
which effect on coronary circulation?
A. increase
B. decrease
C. cannot be predicted
D. no change

An increase in heart rate will have which effect on coronary
circulation?
A. no change
B. decrease
C. increase
D. cannot be predicted

The establishment of collateral circulation will have which
effect on coronary circulation?
A. increase
B. decrease
C. cannot be predicted
D. no change