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Clinical & CardioGenerated accuracy model review: 2026-05-06
Cardiac Index (CI) accuracy and testing
This page documents how Calwarden builds trust for this calculator: source notes, regression-style default tests, limitations, assumptions, unit handling, rounding, and visible change history.
Formula source
- CI = CO / BSA. (BSA calculated via DuBois method)
Test cases
Default input regression check
Generated from the checked-in default inputs and calculate function.
Inputs
- Cardiac Output: 5 L/min
- Height: 175 cm
- Weight: 75 kg
Expected outputs
- Cardiac Index: 2.63 L/min/m²
- Calculated BSA: 1.9 m²
Known limitations
- For educational use only. Uses DuBois formula for BSA estimation.
Assumptions
- This tool assumes the cardiac output value you enter was measured correctly before indexing.
- BSA is estimated with the Du Bois formula rather than measured directly.
- Cardiac index supports hemodynamic assessment, but it should be interpreted alongside the full clinical picture.
Unit handling
- Cardiac Output accepts values in L/min.
- Height accepts values in cm.
- Weight accepts values in kg.
- Cardiac Index is displayed in L/min/m².
- Calculated BSA is displayed in m².
Rounding rules
- Number displays use up to 2 decimal places in the calculator UI.
Version history
1.0.0 - 2026-05-06
Generated accuracy and testing page from the current cardiac-index-calculator calculator definition.
Change log
2026-05-06
Published default regression test documentation and metadata fallbacks for Cardiac Index (CI).
Calculator transparency
Accuracy pages are generated from checked-in calculator definitions and can be upgraded with curated review metadata over time.