2.4 causes of death
The mortality rate was 47.83% (11/23), six neonates were weaned successfully but died finally. Among the six patients, 5 had residual anatomical problems, even the heart function recovered during ECMO, but follow-up wasn’t sustainable. Three cases involved GI bleeding with unstable circulatory function. Two cases failed to undergo further correction for renal failure, medical cost and heart failure reasons, no further interventions were provided and eventually both of them failed to wean.