From: External validation of scores proposed for estimation of survival probability of patients with severe adult respiratory distress syndrome undergoing extracorporeal membrane oxygenation therapy: a retrospective study
Parameter
Points
Age (years)
<45
0
45-55
2
>55
3
Body mass index
>30 kg/m2
−2
Immunocompromiseda
Mechanical ventilation
>6 days
1
SOFA
>12
No prone positioning before ECMO
PEEP
<10 cmH2O
Peak inspiratory pressureb
>35 cmH2O