Calculate Cardiac Output: A Simple Guide Using EDV, ESV, and Heart Rate

Calculating Stroke Volume:

Stroke volume (SV) is the volume of blood ejected from the ventricles with each heartbeat. It can be calculated as the difference between the end-diastolic volume (EDV) and the end-systolic volume (ESV).

SV = EDV - ESV

SV = 80 ml - 10 ml

SV = 70 ml

Calculating Cardiac Output:

Cardiac output (CO) is the amount of blood pumped by the heart per minute. It is determined by multiplying the stroke volume by the heart rate (HR).

CO = SV × HR

At a heart rate of 68 bpm:

CO = 70 ml × 68 bpm

CO = 4,760 ml/min

At a heart rate of 125 bpm:

CO = 70 ml × 125 bpm

CO = 8,750 ml/min

Therefore, the cardiac output for this person ranges from 4,760 ml/min to 8,750 ml/min, depending on the heart rate.