Question

What would be the stroke volume if heart beats for 75 times per minute and cardiac output is 6 litres?

Answer 1

Cardiac output is the product of heart rate (HR) and stroke volume (SV) and is measured in liters per minute. HR is most commonly defined as the number of times the heart beats in one minute. SV is the volume of blood ejected during ventricular contraction or for each stroke of the heart.

Cardiac output = Heart rate $\times$ Stroke volume
$6000mL=75\times S.V.$
$S.V.=\frac{6000}{75}=80mL$