Morbidity for survivors of extracorporeal membrane oxygenation: neurodevelopmental outcome at 1 year of age.

Extracorporeal membrane oxygenation is an important technology in the treatment of high-risk infants whose long-term outcome is being followed prospectively at our institution. The extracorporeal membrane oxygenation procedure allows temporary cardiopulmonary support for critically ill full-term neonates who are refractory to maximum ventilatory and medical management as a consequence of severe persistent pulmonary hypertension. The technique necessitates both the permanent ligation of the right common carotid artery and jugular vein and systemic heparinization. The survivors constitute a unique group of high-risk infants, from the standpoint of the hypoxic-ischemic insults preceding extracorporeal membrane oxygenation and the risks associated with the procedure. Our results indicate that most of our survivors are developing normally at 1 year. Major morbidity, in terms of either significant developmental delay (Bayley mental and motor indices less than 70) or significant neuromotor abnormality, occurred in only 10% of these infants. Poor outcome was associated with major intracranial hemorrhage and chronic lung disease. Ligation of the right carotid artery and jugular vein was not associated with a consistent lateralizing lesion. Long-term follow-up through school age is essential.