Simplified Acute Physiology Score (SAPS II)
Calculator
When to use
Age, years
< 40
40-59
60-69
70-74
75-79
≥ 80
Heart rate
< 40
40-69
70-119
120-159
≥ 160
Varies from cardiac arrest to extreme tachycardia
Systolic blood pressure, mmHg
< 70
70-99
100-199
≥ 200
Temperature
< 39ºC [102.2ºF]
≥ 39ºC [102.2ºF]
Glasgow Coma Scale score
14-15
11-13
9-10
6-8
< 6
arterial partial pressure of oxygen/fraction of inspired oxygen, if on mechanical ventilation or CPAP
< 100
100-199
≥ 200
Not on mechanical ventilation or CPAP within the last 24 hours
BUN, mg/dL [serum urea, mmol/L]
< 28 [< 10]
28-83 [10-29.9]
≥ 84 [≥ 30]
Urine output, mL/day
< 500
500-999
≥ 1000
Sodium, mmol/L
< 125
125-144
≥ 145
Potassium, mEq/L (worst value in 24 hours)
< 3.0
3.0-4.9
≥ 5.0
Bicarbonate, mEq/L
< 15
15-19
≥ 20
Bilirubin
< 4.0 mg/dL [< 68.4 mcmol/L]
4.0-5.9 mg/dL [68.4-102.5 mcmol/L]
≥ 6.0 mg/dL [≥ 102.6 mcmol/L]
White blood cell, ×10**3/mm**3
< 1.0
1.0-19.9
≥ 20.0
Chronic disease
None
Metastatic cancer
Hematologic malignancy
AIDS
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)
Scheduled surgical
Medical
Unscheduled surgical
Calculation
Please enter all the required inputs.