| Higher mortality |
Lower mortality |
| Younger age |
| Low bodyweight (<3 kg) |
Bodyweight >3.3 kg |
| Chromosomal abnormalities |
No chromosomal abnormalities |
| Congenital heart disease |
Myocarditis/cardiomyopathy |
| Single-ventricle physiology |
Two-ventricles |
| High inotrope score |
Low inotrope score |
| Duration of ventilation pre-ECMO >14 days |
Duration of ventilation pre-ECMO <14 days |
| CPR pre-ECMO |
No CPR pre-ECMO |
| Acidosis pre-ECMO (pH <7.26) |
No acidosis (pH > 7.28) |
| High Lactate pre-ECMO |
Low lactate pre-ECMO |
| Failure to clear lactate <24 h |
Able to clear lactate <24 h |
| Renal failure |
No renal failure |
| Fluid overload on ECMO initiation |
No fluid overload |
| Organ system complications |
No organ system complications |
| Bleeding during ECMO |
No bleeding |
| Cardiac catheterization on ECMO <48 h |
Late or no cardiac catheterization |
| Duration of ECMO support >7 days |
Duration of ECMO support <5 days |
