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
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
Heart, Circulation, and Blood