ToolsCalculators
Simplified Acute Physiology Score (SAPS) 3
Predicts hospital mortality at ICU admission.
Simplified Acute Physiology Score (SAPS) 3
Age
Days in hospital before ICU admission
Intra-hospital location before ICU
Vasoactive drugs before ICU admission
ICU admission
Surgical status at admission
Nosocomial infection at admission
Respiratory infection at admission
Comorbidity: cancer on therapy
Comorbidity: chronic heart failure NYHA IV
Comorbidity: haematological cancer
Comorbidity: cirrhosis
Comorbidity: AIDS
Comorbidity: metastatic cancer
Main reason for ICU admission
Lowest Glasgow Coma Scale
Highest total bilirubin (mg/dL)
Body temperature
Highest creatinine (mg/dL)
Highest heart rate
Highest leukocytes (G/L)
Lowest pH
Lowest platelets (G/L)
Lowest systolic BP (mmHg)
Oxygenation
Result0 points
Estimated hospital mortality about 0.0% (global SAPS 3 equation).
- SAPS 3 score
- 0 points
- Predicted hospital mortality
- 0.0 %
When to use
- Estimating hospital mortality risk within the first hour of ICU admission.
- Benchmarking ICU performance via standardised mortality ratios.
Formula
Sum of 20 weighted variables spanning patient characteristics, admission circumstances, and acute physiology. Hospital mortality = exp(logit) / (1 + exp(logit)), where logit = -32.6659 + ln(SAPS 3 + 20.5958) x 7.3068.
Pearls and pitfalls
- Uses worst values from the hour around admission, unlike APACHE/SAPS II which use the first 24 hours.
- Regionally customised equations exist; this tool applies the global reference equation.
- The reason-for-admission item is simplified to a single worst category here.