Enter the cardiac output (L/min) and the body surface area (m^2) into the Calculator. The calculator will evaluate the Cardiac Index.

## Cardiac Index Formula

CI = CO / BSA

Variables:

• CI is the Cardiac Index (L/min/m^2)
• CO is the cardiac output (L/min)
• BSA is the body surface area (m^2)

To calculate Cardiac Index, divide the cardiac output by the body surface area.

## How to Calculate Cardiac Index?

The following steps outline how to calculate the Cardiac Index.

1. First, determine the cardiac output (L/min).
2. Next, determine the body surface area (m^2).
3. Next, gather the formula from above = CI = CO / BSA.
4. Finally, calculate the Cardiac 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 output (L/min) = 5

body surface area (m^2) = 2.5