Table1 Potential ECPR inclusion criteria, as suggested by ELSO [11]

✓ Age < 70 years

✓ Witnessed cardiac arrest

✓ Time from arrest to CCPR ("no-flow interval") < 5 min (i.e., bystander CPR)

✓ Initial cardiac rhythm of ventricular fibrillation/pulseless ventricular tachycardia/pulseless electrical activity

✓ Time from arrest to initiation of ECMO flow ("low-flow interval") < 60 min

✓ End-tidal carbon dioxide (ETCO₂) > 10 mmHg (1.3 kPa) during CCPR prior to ECMO

✓ Intermittent ROSC or recurrent ventricular fibrillation

✓ Presence of "signs of life" during CCPR may predict survival

✓ Absence of previously known life-limiting comorbidities (e.g., end-stage heart failure, chronic obstructive pulmonary disease, end-stage renal failure, liver failure, terminal illness) and alignment with the patient's care goals

✓ No known significant aortic valve incompetence (> mild aortic valve incompetence should be ruled out)