saps_ii_score: Simplified Acute Physiology Score II (SAPS II)

In cliot: Clinical Indices and Outcomes Tools

Simplified Acute Physiology Score II (SAPS II)

Description

Calculates the SAPS II score and predicted hospital mortality for patients admitted to the ICU. The score uses 17 variables: 12 physiological variables, age, type of admission, and three underlying disease variables.

Usage

saps_ii_score(age, heart_rate, systolic_bp, temperature_c,
              mechanical_ventilation_cpap, pao2, fio2, urine_output_24h_l,
              bun, wbc_count, potassium, sodium, bicarbonate, bilirubin,
              gcs, admission_type, chronic_diseases = NULL,
              bun_units = "mg/dL", bilirubin_units = "mg/dL")

Arguments

age	Numeric. Patient age in years.
heart_rate	Numeric. Worst heart rate in the first 24 hours (bpm).
systolic_bp	Numeric. Worst systolic blood pressure in the first 24 hours (mmHg).
temperature_c	Numeric. Worst body temperature in the first 24 hours (Celsius).
mechanical_ventilation_cpap	Numeric (0 or 1). Is the patient on mechanical ventilation or CPAP? (1 = Yes).
pao2	Numeric. PaO2 in mmHg (only used if ventilated).
fio2	Numeric. FiO2 percentage or fraction (e.g., 50 or 0.5) (only used if ventilated).
urine_output_24h_l	Numeric. Urine output in Liters per 24 hours.
bun	Numeric. Blood Urea Nitrogen level.
wbc_count	Numeric. White Blood Cell count (x10^3/mm^3).
potassium	Numeric. Serum Potassium level (mmol/L).
sodium	Numeric. Serum Sodium level (mmol/L).
bicarbonate	Numeric. Serum Bicarbonate level (mEq/L).
bilirubin	Numeric. Total Bilirubin level.
gcs	Numeric. Glasgow Coma Scale score (3-15).
admission_type	String. "scheduled_surgical", "medical", or "unscheduled_surgical".
chronic_diseases	Vector of strings. List of comorbidities: "aids", "hematologic_malignancy", "metastatic_cancer".
bun_units	String. "mg/dL" (default) or "mmol/L".
bilirubin_units	String. "mg/dL" (default) or "umol/L".

Value

A list containing:

SAPS_II_Score	The calculated SAPS II score.
Predicted_Hospital_Mortality	The estimated probability of hospital mortality percentage.

References

Le Gall JR, Lemeshow S, Saulnier F. A new Simplified Acute Physiology Score (SAPS II) based on a European/North American multicenter study. JAMA. 1993;270(24):2957-2963. doi:10.1001/jama.1993.03510240069035

Examples

saps_ii_score(
  age = 65, heart_rate = 130, systolic_bp = 90, temperature_c = 39.0,
  mechanical_ventilation_cpap = 1, pao2 = 70, fio2 = 50, urine_output_24h_l = 0.8,
  bun = 35, wbc_count = 18, potassium = 4.0, sodium = 135, bicarbonate = 18,
  bilirubin = 1.0, gcs = 10, admission_type = "medical",
  chronic_diseases = c("metastatic_cancer")
)

cliot documentation built on Dec. 1, 2025, 1:06 a.m.