Cardiac power output
Cardiac power output (CPO) = (Mean arterial pressure x Cardiac output)/451
Mean arterial pressure = [(Systolic blood pressure − Diastolic blood pressure)/3] + Diastolic blood pressure
Cardiac power output is measured in Watts and CPO less than 0.6 W is a poor prognostic indicator. It has been shown to be the strongest hemodynamic correlate of mortality in cardiogenic shock from SHOCK Trial registry .
- Fincke R, Hochman JS, Lowe AM, Menon V, Slater JN, Webb JG, LeJemtel TH, Cotter G; SHOCK Investigators. Cardiac power is the strongest hemodynamic correlate of mortality in cardiogenic shock: a report from the SHOCK trial registry. J Am Coll Cardiol. 2004 Jul 21;44(2):340-8.