Cardiology

Cardiac Power Output (CPO)

Measures cardiac mechanical power — strongest haemodynamic predictor of mortality in cardiogenic shock. CPO = (MAP × CO) / 451.

Score interpretation

Adequate Cardiac Power (≥ 0.6 W) 0.6–10

At or above the 0.6 W target used in cardiogenic shock protocols; normal resting CPO is about 1 W.

→ Continue current haemodynamic management; reassess with any clinical change.

Reduced Cardiac Power (0.54–0.59 W) 0.531–0.599

Below the 0.6 W target used in cardiogenic shock protocols.

→ Close haemodynamic monitoring. Optimise volume status, afterload and contractility; senior / cardiology review.

Critically Low Cardiac Power (≤ 0.53 W) 0–0.53

CPO ≤ 0.53 W was the strongest haemodynamic correlate of in-hospital death in cardiogenic shock (SHOCK registry, Fincke 2004).

→ Initiate cardiogenic shock protocol. Consider MCS (IABP/Impella/ECMO). Urgent cardiology/CCU review.

Interpretation bands for the CPO. Apply clinical judgement and local guidance.

Fincke R et al. Cardiac power is the strongest hemodynamic correlate of mortality in cardiogenic shock. J Am Coll Cardiol. 2004;44(2):340-348.

Curated clinical cross-links plus same-class fallbacks.

Calculators

Drugs

Pathways

Decision support only — verify against a current formulary, NICE, or your local guideline before clinical use.