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Cardiac power index (CPI)

CPI represents the power of left ventricular cardiac output in watts. It is the product of pressure (MAP) and flow (CO). In clinical studies it has been found to be the strongest independent predictor of hospital mortality in cardiogenic shock patients.[1],[2]

CPI formula
  1. 1. Mendoza DD, Cooper HA and Panza JA, Cardiac power output predicts mortality across a broad spectrum of patients with acut cardiac disease. Am Heart J 2007; 153(3): 366-70.

  2. 2. Fincke R et al., Cardiac power is the strongest haemodynamic correlate of mortality in cardiogenic shock: a report from the SHOCK trial registry. J Am Coll Cardiol 2004; 44(2): 340-8.