MDCalc

Simplified Acute Physiology Score (SAPS) II

Estimates mortality in ICU patients, comparable to APACHE II.

Use the worst values in the past 24 hours.

Age, years
Heart rate
If patient had both cardiac arrest (11 points) and extreme tachycardia (7 points), assign 11 points
Systolic BP, mmHg
Worst value in 24 hours
Temperature ≥39ºC (102.2ºF)
Highest temperature in 24 hours
GCS
Lowest value in 24 hours; if patient is sedated, record estimated GCS before sedation
PaO₂/FiO₂, if on mechanical ventilation or CPAP
Use lowest value in 24 hours; if patient was extubated <24 hours ago, use lowest value while on mechanical ventilation
BUN, mg/dL or serum urea, mmol/L
Urine output, mL/day
If in ICU <24 hours, calculate for 24 hours (e.g. if 1 L in 8 hours, then mark 3 L in 24 hours)
Sodium, mEq/L or mmol/L
Worst value in 24 hours
Potassium, mEq/L
Worst value in 24 hours
Bicarbonate, mEq/L
Lowest value in 24 hours
Bilirubin
Highest value in 24 hours
WBC, x 10³/mm³
Worst value in 24 hours
Chronic disease
Type of admission
Scheduled surgical = surgery scheduled ≥24 hours prior; medical = no surgery within 1 week of admission; unscheduled surgical = surgery scheduled ≤24 hours prior

Result:

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Advice

Scores can be studied within a single ICU setting for quality improvement and other initiatives.

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