This is the measurement of how much energy is converted to  work by the heart.

• SW = Stroke Work
• SV = Stroke Volume
• `P_afterload` = Afterload Pressure
• `"mv"^2`/2 = Kinetic Energy
    

Notes

The stoke work is the product of the mean aortic pressure (the average blood pressure throughout the cardiac cycle (average ( 100 mmHg) ) and the stroke volume (the amount of blood pushed into the aorta with each beat of the heart (end-diastolic - end-systolic)). Together, the systolic pressure, stroke volume, cardiac output, stroke work, and cardiac work represents the ability of the ventricle to function as a pump (known as the Frank-Starling relation).  The stroke  work  is the left ventricular work/beat.  The right ventricle is only one-seventh of the left ventricle because of pulmonary vascular resistance is less than the systematic vascular resistance.  The stroke work can also be found through mechanical efficiency and arterial inefficiency.