 One way to determine if a baby does in fact have a Bochdalek hernia, would be to have a pediatrician perform a physical on the infant.A chest x-ray can also be done to examine the abnormalities of not only the lungs but also the diaphragm and the intestine.In addition to these, a doctor can also take a blood test, drawing arterial blood to check and determine how well the baby is breathing and his or her ability to breathe.