For infants born full term, the prognosis is good: most who have a PDA diagnosed and repaired early will have healthy, normal lives, with normal appetites, activity levels and growth. For premature babes, the prognosis depends on how premature the baby was, as well as other illnesses the baby may have.
For children whose PDA was diagnosed late and/or never repaired, the prognosis is less certain. These children are at risk for pulmonary hypertension and should receive follow-up care at a center specializing in congenital heart disease. A small PDA that is never closed may eventually lead to heart symptoms, and a larger PDA that remains open may lead to heart failure, hypertension or an infection of the inner lining of the heart.