Chest radiographic findings in neonates on extracorporeal membrane oxygenation.

Eight full-term neonates with pulmonary failure were managed with extracorporeal membrane oxygenation (ECMO). Chest radiographs obtained before and during ECMO support were reviewed. During periods of increased flow requirements, the chest radiographs were difficult to evaluate because of increasing pulmonary opacity. During periods of the infants' clinical improvement, their chest radiographs tended to improve as well. A direct cause-and-effect relationship between the pulmonary density and the ECMO flow requirements has not yet been established. The chest radiographs were reliable in confirming correct catheter positions. Routine daily examinations did not demonstrate unsuspected abnormality. Chest radiography during periods of clinical instability, however, added confirmatory evidence to some clinical diagnoses and assisted us in making the diagnosis of an unexpected pneumothorax.