The following information may help to address your question:
The most serious complication after surgical repair of CDH is persistent pulmonary hypertension of the newborn (PPHN). Other complications that may occur soon after surgery include hemorrhage, chylothorax, and patch infection.
The postnatal survival rate at tertiary centers (providing specialized care) has improved, with reported rates of 70 to 92 percent. However, these data represent the survival rate of cases that were full-term infants born or transferred to tertiary care centers with available skilled personnel and access to advanced technology.
While reports of normal or near-normal long-term outcomes are increasing, many survivors have long-term complications. These may include chronic respiratory disease, recurrent hernia (abnormal opening) or patch problems, spine or chest wall abnormalities, gastrointestinal difficulties, and neurological impairment.