A baby born at 28 weeks or after only 7 months pregnancy can weigh as little as 1 kilogram. The smaller the baby or the earlier the birth the more likely for there to be problems. This means that the baby's lung is immature and baby cannot survive unless oxygen therapy is given. This means that a communication or tube between the right side of the heart and the left has remained open. This will weaken the baby's heart.
Treatment is required.
This is especially true with babies weighing less than 1 kg. Your doctor may need to place baby under phototherapy to help reduce the level of jaundice. That is why most very srnall babies wil be placed on antibiotics. Breast milk can be fed through the tube.