Can a baby with a vsd develop chronic lung disease from it?

Generally NO: Unless the vsd is huge, there is very little likelihood of congestive heart failure. A pediatric cardiologist can make a very accurate assassment of the risk.

No: The term, chronic lung disease, is synonymous with bronchopulmonary dysplasia typically developing in premature infants who required prolonged respirator care. Untreated large vsd can induce congestive heart failure but not chronic lung condition.

No if repaired: A large vsd that is not closed surgically by 12-24 months (younger in downs syndrome) may result in pulmonary hypertension.

Yes: If the vsd is big you can develop pulmonary hypertension. This might lead to irreversible damage of the lungs.