SAPS II (Simplified Acute Physiology Score)
ICU severity score with a predicted hospital mortality, from the worst values in the first 24 hours.
Inputs
1 of 14years
bpm
mmHg
°C
Leave blank if not ventilated.
mmHg
L/day
× 10³/µL
mEq/L
mEq/L
mEq/L
points
Chronic disease
Admission type
Patient values are shared with every calculator.
When to use
- ICU admission severity, research, and benchmarking.
Pearls and pitfalls
- Use the worst values from the first 24 hours.
- PaO₂/FiO₂ counts only if ventilated or on CPAP.
Why use
Gives a calibrated mortality estimate without a diagnosis category.
Points for 17 variables; logit = −7.7631 + 0.0737 × SAPS + 0.9971 × ln(SAPS + 1)