Table 2.

SAVE score variables

Variables	Input
Diagnosis
– Myocarditis	Yes/no
– Refractory VT/VF	Yes/no
– Post heart/lung transplantation	Yes/no
– Congenital heart disease	Yes/no
– Other	Yes/no
General
– Age	Categories; 18–38, 39–51, 53–62 years
– Weight	Categories: <65, 65–89, ≥90 kg
Cardiac
– Pulse pressure ≤20 mm Hga	Yes/no
– Diastolic blood pressure ≥40 mm Hga	Yes/no
– Cardiac arrest	Yes/no
Respiratory
– Peak inspiratory pressure 20 cmH2O
– Intubation duration	Categories: ≤10, 11–29, ≥30 hours
Renal
– Acute renal failureb	Yes/no
– Chronic renal failurec	Yes/no
– HCO3 pre-ECLS <15 mmol/ld	Yes/no
Other organ failures
– Central nervous system dysfunctione	Yes/no
– Liver failuref	Yes/no

ECLS extracorporeal life support, eGFR estimated glomerular filtration rate, VT ventricular tachycardia, VF ventricular fibrillation

^aWorst value within 6 h prior to cannulation

^bCreatinine levels >133 µmol/l (5 mg/dl)

^cKidney damage or eGFR <60 ml/min/1.73 m² for ≥3 months

^dWorst value before cannulation

^eNeurotrauma, stroke, encephalopathy, cerebral embolism, seizure and epileptic syndromes

^fBilirubin ≥33 mcmol/l or elevation of serum aminotransferases (ALT or AST) >70 UI/l at ECLS cannulation

All values prior to cannulation