What would be the cardiac output of a person having 72 heart beats per minute and a stroke volume of 50 mL ?

Options

A. 360 mL
B. 3600 mL
C. 7200 mL
D. 5000 mL

Answer

D

Explanation

Cardiac Output
(i) The volume of blood pumped by each ventricle per minute is celled the cardiac output.It is 500mL of 5 liters in a healthy individual.
(ii) It is determined by multiplying the heart rate with the volume of blood ejected by each ventricle during each beat,which is called as stroke volume.
Cardiac output = Heart rate `xx` Stroke volume
`72 beats // min xx 0.8 liter// beat=5.5 liter//min` ltbgt (iii) Cardiac index is the minute volume per sq.m. of body surface area. Its normal value 3.3 lit/min/sq.m.