True about cardiac O2 demand is-
Ans. (a) Directly proportional to mean arterial pressureRef: Ganong, 25th ed/p.612Myocardial oxygen consumption is directly proportional to mean arterial pressure
Heart, Circulation, and Blood
Directly proportional to mean arterial pressure
Inversely proportional to heart rate
Inversely proportional to cardiac work
Has a constant relation to the external work done by the heart
Directly proportional to mean arterial pressure