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Clinical & CardioGenerated accuracy model review: 2026-05-06
Mean Arterial Pressure 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
- MAP = DP + 1/3(SP - DP)
Test cases
Default input regression check
Generated from the checked-in default inputs and calculate function.
Inputs
- Systolic BP: 120 mmHg
- Diastolic BP: 80 mmHg
Expected outputs
- MAP: 93 mmHg
- Perfusion Status: Normal
Known limitations
- MAP is an estimate. Direct invasive measurement (arterial line) is the gold standard. Formulas may vary slightly between institutions.
Assumptions
- This is the standard cuff-based estimate, not a direct arterial-line mean.
- The formula assumes a typical cardiac cycle where diastole lasts longer than systole.
- MAP is helpful for context, but pressure alone does not fully define tissue perfusion.
Unit handling
- Systolic BP accepts values in mmHg.
- Diastolic BP accepts values in mmHg.
- MAP is displayed in mmHg.
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 mean-arterial-pressure-calculator calculator definition.
Change log
2026-05-06
Published default regression test documentation and metadata fallbacks for Mean Arterial Pressure.
Calculator transparency
Accuracy pages are generated from checked-in calculator definitions and can be upgraded with curated review metadata over time.