Stroke work and stroke work index are measures of cardiac pumping.
Parameters:
(1) mean arterial pressure in mm Hg
(2) pulmonary capillary wedge pressure (PCWP) in mm Hg
(3) stroke volume in mL
(4) body surface area in square meters
stroke work in gram•meter =
= ((mean arterial blood pressure) - (PCWP)) * (stroke volume) * 0.0136
stroke work index in gram•meter/(square meter) =
= (stroke work) / (body surface area in square meters)
