What would be the heart rate of a person if the cardiac output is 5 L, blood volume in the ventricles at the e

Question

What would be the heart rate of a person if the cardiac output is 5 L, blood volume in the ventricles at the end of diastole is 100 mL and at the end of ventricular systole is 50 mL?

Accepted Answer

Cardiac output = stroke volume × Heart rate. Cardiac output = 5L or 5000 ml. Blood volume in ventricles at the end of diastole = 100 ml. Blood volume in ventricles at the end of systole = 50 ml. Stroke volume = 100 - 50 = 50 ml. So, 5000 ml = 50 ml × Heart rate. So, Heart rate = 100 beats per minute.

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