SAPS II Score Calculator

SAPS II Score Calculator for Critical Care. Higher totals indicate greater illness severity in the historical model. The displayed lower/moderate/high bands are site labels, not verified clinical action thresholds. Modern mortality prediction needs appropriate calibration; do not choose a treatment limit, triage destination or withdrawal decision from this number.

For shared guidance on choosing a tool and documenting results, read the clinical calculator workflow.

How this calculator works

SAPS II is a historical adult ICU severity model using first-day physiology, age, admission type and underlying disease. This page is a finalized-score interpreter: its widget accepts an externally calculated total, not the physiologic inputs described elsewhere on the page. It does not calculate a mortality probability. Obtain the total from an authorized scoring workflow and preserve its collection window and missing-data rules.

When to use this calculator

Use the explanation to understand cohort risk adjustment, research reporting and case-mix comparisons. The original 1993 cohort excluded children, burns, coronary care and cardiac surgery. A score from a different population or time window is not automatically comparable.

Inputs used

  • Age
  • Admission type
  • Vital signs
  • Urine output
  • Laboratory values
  • Glasgow Coma Scale
  • Chronic disease variables

Clinical interpretation

Higher totals indicate greater illness severity in the historical model. The displayed lower/moderate/high bands are site labels, not verified clinical action thresholds. Modern mortality prediction needs appropriate calibration; do not choose a treatment limit, triage destination or withdrawal decision from this number.

Worked example

If an authorized assessment produces SAPS II 52, enter 52 points. The widget reports its locally defined moderate-severity band; it does not derive that total or show a 51% mortality estimate. This example checks score entry only, not the clinical scoring table.

Limitations and safety notes

The site cannot verify the original observations, eligibility, integer scoring or local calibration. A step of 1 in an input is not an integer validation rule. The published model's discrimination does not establish current calibration, and a source identity check is not medical validation of this widget.

Frequently asked questions

Does this page calculate SAPS II from laboratory results?

No. The registered component only interprets a total obtained elsewhere.

Why is no mortality percentage supplied here?

The widget does not implement that regression, and an uncalibrated historical probability should not be presented as an individual prognosis.

Can I reconstruct the score from this explanation?

No. Use the authorized scoring materials; this page intentionally does not reproduce the full table.

References

  • Le Gall et al. JAMA 1993; original cohort, exclusions and intended hospital-outcome model. PMID 8254858. https://pubmed.ncbi.nlm.nih.gov/8254858/

Editorial review and citation methodology

Maintained by the Quick Medical Calculator Editorial Team. Content record date: September 7, 2026. A content date is not evidence of independent clinical review. Individual clinical sign-off is not recorded on this page.

  • Prefer original validation studies for scoring systems and prediction tools.
  • Use current specialty society guidance, transplant allocation policy, public health guidance, or regulator resources when they govern clinical use.
  • Include limitations and safety notes when a calculator is population-specific, context-dependent, or unsuitable as a standalone decision tool.

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