cliot (version 1.0.0)

preset_ecmo_score: PRESET Score for Survival on ECMO

Description

Calculates the PREdiction of Survival on ECMO Therapy (PRESET) Score. This tool predicts in-hospital survival for adult patients placed on venovenous extracorporeal membrane oxygenation (VV-ECMO) for severe acute respiratory failure. It stratifies patients into three risk classes based on admission physiology and pre-ECMO hospital duration.

Usage

preset_ecmo_score(mean_arterial_pressure, lactate, arterial_ph,
                  platelet_count, hospital_days_pre_ecmo)

Value

A list containing:

PRESET_Score

The calculated score (Range 0-15).

Risk_Class

Risk classification (Class I: 0-3, Class II: 4-5, Class III: >=6).

Est_Hospital_Survival

Estimated probability of survival to hospital discharge.

Arguments

mean_arterial_pressure

Numeric. Mean Arterial Pressure (MAP) in mmHg. >100: 0 pts 91-100: 1 pt 81-90: 2 pts 71-80: 3 pts <=70: 4 pts

lactate

Numeric. Serum lactate concentration in mmol/L. <=1.5: 0 pts 1.51-3.0: 1 pt 3.01-6.0: 2 pts 6.01-10.0: 3 pts >10.0: 4 pts

arterial_ph

Numeric. Arterial pH (pHa). >7.30: 0 pts 7.201-7.30: 1 pt 7.101-7.20: 2 pts <=7.10: 3 pts

platelet_count

Numeric. Platelet count in x10^3/uL (or x10^9/L). >200: 0 pts 101-200: 1 pt <=100: 2 pts

hospital_days_pre_ecmo

Numeric. Number of days in the hospital before ECMO initiation. <=2: 0 pts 3-7: 1 pt >7: 2 pts

References

Hilder M, Herbstreit F, Adamzik M, et al. Comparison of mortality prediction models in acute respiratory distress syndrome undergoing extracorporeal membrane oxygenation and development of a novel prediction score: the PREdiction of Survival on ECMO Therapy-Score (PRESET-Score). Crit Care. 2017;21(1):301. doi:10.1186/s13054-017-1888-6

Examples

# Example 1: Good Prognosis (Class I)
# MAP 95, Lactate 1.2, pH 7.35, Plt 250, Day 1
# Score = 1 + 0 + 0 + 0 + 0 = 1
preset_ecmo_score(95, 1.2, 7.35, 250, 1)

# Example 2: Poor Prognosis (Class III)
# MAP 65, Lactate 8.0, pH 7.15, Plt 80, Day 8
# Score = 4 + 3 + 2 + 2 + 2 = 13
preset_ecmo_score(65, 8.0, 7.15, 80, 8)