🏥 SAPS II (Simplified Acute Physiology Score II)
UseWhen to use: first 24 h ICU risk adjustment / benchmarking with available worst values.
StrataHigher SAPS II → higher estimated hospital mortality; calibration may drift by era/site.
LimitsWhen not to use: as the only factor for individual futility decisions. · Pitfall: mixing best/worst values or incomplete chronic-disease codin… · APACHE/SOFA may be preferred locally for some use-cases.
SourceLe Gall JR, et al. JAMA 1993 (SAPS II)
This-shift next steps
After scoring: open the scene pack, peer scores, and the matching pathway. Local reference — no HIS write.
Paste the link in Slack, Teams, X, or LinkedIn — the preview image comes from this page’s Open Graph card.
Methodology · worked example, guidelines & full notes
Published Le Gall points + logistic.
When to use
When to use: first 24 h ICU risk adjustment / benchmarking with available worst values.
How it works
Sum published points (age, HR, SBP, temp, PaO₂/FiO₂ if ventilated, UOP, BUN, WBC, K, Na, HCO₃, bilirubin, GCS, chronic disease, admission type). Mortality from logit=−7.7631+0.0737×SAPS+0.9971×ln(SAPS+1).
Key points
- Published Le Gall points + logistic.
- Not a EuroSCORE-style black box here.
- Next: SOFA / APACHE II as available.
References
Worked calculation
The values below come from this tool's own example placeholders and are computed server-side with the formula shown on this page, so the arithmetic can be checked quickly. It demonstrates how to substitute values only — it is not clinical advice and not a real case.
| Age | 60–69 (12) |
|---|---|
| Heart rate (worst) | 70–119 (0) |
| SBP (worst) | 70–99 (5) |
| Temperature | < 39 °C (0) |
| If ventilated/CPAP: PaO₂/FiO₂ | < 100 (11) |
| Urine output / 24 h | 0.5–0.999 L (4) |
| BUN (or urea) | BUN 28–83 / urea 10–29.9 (6) |
| WBC ×10⁹/L | 1.0–19.9 (0) |
| Potassium | 3.0–4.9 (0) |
| Sodium | 125–144 (0) |
| HCO₃⁻ | 15–19 (3) |
| Bilirubin | 4.0–5.9 / 68.4–102.5 (4) |
| Glasgow Coma Scale | 9–10 (7) |
| Chronic disease | Metastatic cancer (9) |
| Type of admission | Medical (6) |
→SAPS II67pts
- Est. hospital mortality：79.9%
- Equation：logit=−7.7631+0.0737×SAPS+0.9971×ln(SAPS+1) (Le Gall 1993)
- Band：Higher
| Age | < 40 (0) |
|---|---|
| Heart rate (worst) | < 40 (11) |
| SBP (worst) | < 70 (13) |
| Temperature | < 39 °C (0) |
| If ventilated/CPAP: PaO₂/FiO₂ | Not ventilated (0) |
| Urine output / 24 h | < 0.5 L (11) |
| BUN (or urea) | BUN <28 mg/dL / urea <10 mmol/L (0) |
| WBC ×10⁹/L | < 1.0 (12) |
| Potassium | < 3.0 (3) |
| Sodium | < 125 (5) |
| HCO₃⁻ | < 15 (6) |
| Bilirubin | < 4.0 mg/dL / <68.4 µmol/L (0) |
| Glasgow Coma Scale | < 6 (26) |
| Chronic disease | None (0) |
| Type of admission | Scheduled surgical (0) |
→SAPS II87pts
- Est. hospital mortality：95.7%
- Equation：logit=−7.7631+0.0737×SAPS+0.9971×ln(SAPS+1) (Le Gall 1993)
- Band：Higher
Verification & sources · governance
FAQ
Frequently asked questions
- Does SAPS II (Simplified Acute Physiology Score II) upload patient data? Where is it calculated?
- Calculation runs locally in the browser; inputs and results are not uploaded. For licensed clinicians only; interpret with history, investigations and local protocols — not a diagnosis or prescription.
- How is SAPS II (Simplified Acute Physiology Score II) calculated in practice? Can you show a worked example?
- Inputs: Age 60–69 (12), Heart rate (worst) 70–119 (0), SBP (worst) 70–99 (5), Temperature < 39 °C (0), If ventilated/CPAP: PaO₂/FiO₂ < 100 (11), Urine output / 24 h 0.5–0.999 L (4), BUN (or urea) BUN 28–83 / urea 10–29.9 (6), WBC ×10⁹/L 1.0–19.9 (0)… → Result: SAPS II 67 pts（Est. hospital mortality: 79.9%, Equation: logit=−7.7631+0.0737×SAPS+0.9971×ln(SAPS+1) (Le Gall 1993), Band: Higher） Inputs: Age < 40 (0), Heart rate (worst) < 40 (11), SBP (worst) < 70 (13), Temperature < 39 °C (0), If ventilated/CPAP: PaO₂/FiO₂ Not ventilated (0), Urine output / 24 h < 0.5 L (11), BUN (or urea) BUN <28 mg/dL / urea <10 mmol/L (0), WBC ×10⁹/L < 1.0 (12)… → Result: SAPS II 87 pts（Est. hospital mortality: 95.7%, Equation: logit=−7.7631+0.0737×SAPS+0.9971×ln(SAPS+1) (Le Gall 1993), Band: Higher）