Cardiac output refers to the amount of blood ejected per minute in a typical adult human.It is calculated as follows:
Cardiac output = Heart rate × Stroke volume
Given : Cardiac output = 5500 cm³
Pulse rate = Heart rate = 68
By using these values stroke volume of is calculated as follows:
∴ Cardiac output = Heart rate × Stroke volume
∴ Stroke volume = Cardiac output/Heart rate = 5500/68 = Approx. 80.
∴ Stroke volume is 80 ml.