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While the child is under general anesthesia, a cut is made in the upper abdomen, under the ribs. The abdominal organs are gently pulled down through the opening in the diaphragm and positioned into the abdominal cavity.
The hole in the diaphragm is repaired and the cut is stitched closed. If a large defect is present, a plastic patch is used to cover the defect in the diaphragm. A tube is placed in the chest to allow air, blood, and fluid to drain so the affected lung can re-expand. This tube remains in place after surgery for a few days.
When the abdominal organs pass into the chest cavity, the lung tissue on the affected side is compressed, fails to grow normally, and is unable to expand after birth. As the child begins to breathe, cry, and swallow, air enters the intestines that are protruding into the chest. The increasing size of the intestines puts pressure on the other side of the chest, the other lung, and the heart and can quickly cause a life-threatening situation.
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