Babies with heart disease may get tired easily while they're feeding. If feeding makes your baby tired, try giving smaller amounts of milk or formula at one time. It may help to feed the baby more often. Your baby may also need more food because a heart defect makes the heart work a lot harder. For this reason, your baby may need more food to grow.
Breast feeding a baby with a heart disease can be harder because the baby gets tired so quickly.
But breast milk is the best food for your baby. It helps protect your baby from infections. An infection could make your baby's heart problem worse. You may need to give your baby formula too, so he or she can get enough calories. If you're having trouble breast feeding, talk with your doctor.