AIIMS May 2011 – MCQ 137

True regarding myocardial O2 demand?
A. Inversely related to heart rate
B. Has constant relation to external cardiac work
C. Correlates with duration of systole
D. Is negligible at rest

Please contribute to the discussion by posting the answer with references and pointing out any errors in the question!

2 Comments

venkatesh May 13, 2011

has constant relation to external cardiac work [it is ventricular work needed to pump the blood into aorta]
deepa May 14, 2011

option A

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