Myocardial oxygen consumption (MVO2) is defined by the equation: MVO2 = coronary blood flow x arteriovenous difference in O2 content. The average value for a heart of 300 g is 30 to 35 ml/min.

Why do I need a cardiopulmonary test?

The Cardiopulmonary Stress Test allows your doctor to measure how well your heart and lungs are working during exercise. Measurements are made of the amount of oxygen your body is using. Measurements are made while you ride a bike or walk on a treadmill.

How can I reduce myocardial oxygen demand?

Myocardial oxygen demand can be decreased by decreasing 1) heart rate, 2) contractility (inotropy), 3) ventricular afterload, and 4) ventricular preload.