Safety and Efficacy of FETO in CDH Phase III

This Phase III study is testing a fetal procedure called FETO (Fetal Endoscopic Tracheal Occlusion) — where a tiny balloon is placed in a baby's windpipe before birth — to improve survival in babies with severe congenital diaphragmatic hernia (CDH), a condition where the diaphragm doesn't fully close and organs push into the chest, preventing the lungs from developing normally. **You may be eligible if...** - You are a pregnant woman aged 18 or older with a singleton pregnancy - Your baby has been diagnosed with severe left or right-sided CDH with liver in the chest - The baby's lung-to-head ratio is below the required threshold for this procedure - The baby has normal chromosomes and no other structural abnormalities - Your cervix is long enough and you can reside within 30 minutes of the treating hospital **You may NOT be eligible if...** - You are carrying twins or more - You have latex allergy, preterm labor, or short cervix - Your baby has bilateral CDH or other significant abnormalities - You cannot have a support person stay with you for the duration of the pregnancy at the hospital Talk to your doctor to see if this trial is right for you.