Can you tell me the long-term effects of a repaired pda (patent ductus arteriosus) for humans?

Cure: If the PDA was an isolated defect. Closing it cures the problem.

Usually none: In the majority of patients, a successfully repaired (ligated) PDA carries no long term adverse consequences. If there are complications from the procedure (injury of the recurrent laryngeal nerve or phrenic nerve, pulmonary artery, or aorta) then there could be long term consequences (vocal cord paralysis, paralysis of the diaphragm, hoarseness, obstruction of the pulmonary artery or aorta).