They must first and foremost protect the patient. Their primary responsibility is to the interest of the parents and the baby. The doctor does this by not telling the parents about the pain the baby will be in during treatment. The parents do not want to hear about the negative aspects of the treatments so the doctor's focus on the improvement the treatment may allow. Doctors have an agenda, to save the baby and then provide information to the parents that will allow this goal to be achieved despite the discomfort and pain the baby may feel temporarily.
Doctors also have a financial responsibility to the hospital.
They are obligated to bring in new and different cases to the hospital so that the hospital can receive research grants, develop new machines and run tests on the patients. The more difficult the case, the more prestige and honor the hospital receives. Sick babies are probably the easiest and most lucrative patients that a hospital can admit. This money pays for care and also brings in grants that can improve the image of the hospital and the doctor. The methods of saving a baby has major consequences for the patient, the baby.