Fetoscopic Endoluminal Tracheal Occlusion in Severe Left Congenital Diaphragmatic Hernia

Study Summary All patients will complete a standard prenatal evaluation at the Center for Fetal Diagnosis and Treatment (CFDT) to find out if they are candidates. The standard clinical assessments include: Medical history and Physical exam, Level II ultrasound, Fetal echocardiogram, Fetal magnetic resonance imaging (MRI), and a Psychosocial assessment. If determined eligible, patients will be extensively counseled by the CFDT Team and those who choose to participate will provide written, informed consent for study enrollment. Up to 25 women will be enrolled in the FETO study. The mother and her unborn baby will undergo two procedures. A balloon will be placed in the unborn baby's airway between 27+0/7 - 29+6/7 gestational age. The balloon blocks the airway and remains in place until balloon removal. The timing for balloon removal will be determined by the CFDT Management Team and can occur between 34 +0/7 - 34+6/7 gestational age. Mothers enrolled in this study must remain near the fetal center, under close supervision, from the time of balloon placement through delivery in the Garbose Family Special Delivery Unit. Weekly prenatal monitoring will occur after the first procedure at the CFDT and planned delivery will occur in the Garbose Family Special Delivery Unit at term. Postnatal stabilization and subsequent surgery to repair the diaphragm will take place at CHOP. Infants will be followed at CHOP at 6 months, 12 months, and 2 years of age and then long-term in the Pulmonary Hypoplasia Program at The Children's Hospital of Philadelphia.