Question

In a cardiac cycle, if the stroke volume is 70 ml and heart rate is 72 beats/min, the cardiac output is

• A. 142 ml/min
• B. 72 ml/min
• C. 1070 ml/min
• D. 70 ml/min
• E. 5040 ml/min

Answer 1

The correct option is E 5040 ml/min

Cardiac output is defined as the blood pumped by left ventricle into aorta or from right ventricle into pulmonary artery per minute.

Cardiac output is calculated as: Stroke volume x heart rate

In the question, stroke volume is given 70 ml and heart rate is given 72 beats/min

Therefore, cardiac output = 70 x 72 = 5040 ml/min

So, the correct answer is '5040 ml/min'.