Enter the cardiac index (L/min/m^2) and the mean arterial pressure (mmHg) into the Calculator. The calculator will evaluate the Cardiac Power Index. 

Cardiac Power Index Formula

CPI = CI * MAP / 451


  • CPI is the Cardiac Power Index (W/m^2)
  • CI is the cardiac index (L/min/m^2)
  • MAP is the mean arterial pressure (mmHg)

To calculate Cardiac Power Index, multiply the cardiac index by the mean arterial pressure, then divide by 451.

How to Calculate Cardiac Power Index?

The following steps outline how to calculate the Cardiac Power Index.

  1. First, determine the cardiac index (L/min/m^2). 
  2. Next, determine the mean arterial pressure (mmHg). 
  3. Next, gather the formula from above = CPI = CI * MAP / 451.
  4. Finally, calculate the Cardiac Power Index.
  5. After inserting the variables and calculating the result, check your answer with the calculator above.

Example Problem : 

Use the following variables as an example problem to test your knowledge.

cardiac index (L/min/m^2) = 14

mean arterial pressure (mmHg) = 12