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Congenital diaphragmatic hernia repair

Diaphragmatic hernia - surgery

Congenital diaphragmatic hernia (CDH) repair is surgery to correct an opening or space in a baby's diaphragm. This opening is called a hernia. It is a rare type of birth defect. Congenital means the problem is present at birth.

Description

Before the surgery is done, nearly all infants need a breathing device to improve their oxygen levels.

The surgery is done while your child is under general anesthesia (asleep and not able to feel pain). The surgeon usually makes a cut (incision) in the belly under the upper ribs. This allows the organs in the area to be reached. The surgeon gently pulls these organs down into place through the opening in the diaphragm and into the abdominal cavity.

In less severe cases, the surgery can be done using smaller incisions in the chest. A small video camera called a thoracoscope is placed through one of the incisions. This allows the surgeon to view inside the chest. Instruments to repair the hole in the diaphragm are placed through the other incisions.

In either type of operation, the surgeon repairs the hole in the diaphragm. If the hole is small, it may be repaired with stitches. Or, a piece of plastic patch is used to cover the hole.

Why the Procedure Is Performed

The diaphragm is a muscle. It is important for breathing. It separates the chest cavity (where the heart and lungs are) from the belly area.

In a child with CDH, the diaphragm muscle is not completely formed. The CDH opening allows organs from the belly (stomach, spleen, liver, and intestines) to go up into the chest cavity where the lungs are. The lungs do not grow normally and stay too small for babies to breathe on their own when they are born. The blood vessels in the lungs also develop abnormally. This results in not enough oxygen getting into the baby's body.

A diaphragmatic hernia can be life threatening and most babies with CDH are very ill. Surgery to repair CDH must be done as early as possible after the baby is born.

Risks

Risks for this surgery include:

Before the Procedure

Babies born with CDH are admitted to a neonatal intensive care unit (NICU). It may be days or weeks before the baby is stable enough for surgery. Because the condition is life threatening and transporting a very ill newborn is risky, babies who are known to have CDH should be delivered in a center with pediatric surgeons and neonatologists.

  • In the NICU, your baby will probably need a breathing machine (mechanical ventilator) before the surgery. This helps the baby breathe.
  • If your child is very sick, a heart-lung bypass machine (extracorporeal membrane oxygenator, or ECMO) may be needed to do the work of the heart and lungs.
  • Before surgery, your baby will have x-rays and regular blood tests to see how well the lungs are working. A light sensor (called a pulse oximeter) is taped to baby's skin to monitor the oxygen level in the blood.
  • Your baby may be given medicines to control blood pressure and stay comfortable.

Your baby will have tubes placed:

  • From the mouth or nose to the stomach to keep air out of the stomach
  • In an artery to monitor blood pressure
  • In a vein to deliver nutrients and medicines

After the Procedure

Your baby will be on a breathing machine after the surgery and will stay in the hospital for several weeks. Once taken off the breathing machine, your baby may still need oxygen and medicines for a while.

Feedings will start after your baby's bowels start working. Feedings are usually given through a small, soft feeding tube from the mouth or nose into the stomach or small intestine until your baby can take milk by mouth.

Nearly all infants with CDH have reflux when they eat. This means the food or acid in their stomach moves up into their esophagus, the tube that leads from the throat to the stomach. This can be uncomfortable. It also leads to frequent spitting up and vomiting, which makes feedings more difficult once your baby is taking food by mouth. Reflux increases the risk for pneumonia if babies inhale milk into their lungs. It can also make it challenging for babies to take in enough calories to grow.

The nurses and feeding specialists will teach you ways to hold and feed your baby to prevent reflux. Some babies need to be on a feeding tube for a long time to help them get enough calories to grow.

Outlook (Prognosis)

The outcome of this surgery depends on how well your baby's lungs have developed. Some babies have other medical problems, especially with the heart, brain, muscles, and joints, which often affect how well the baby does.

Usually the outlook is good for infants who have well-developed lung tissue and no other problems. Even so, most babies who are born with a diaphragmatic hernia are very ill and will stay in the hospital for a long time. With advances in medicine, the outlook for these infants is improving.

All babies who have had CDH repairs will need to be watched closely to make sure the hole in their diaphragm does not open up again as they grow.

Babies who had a large opening or defect in the diaphragm, or who had more problems with their lungs after birth, may have lung disease after they leave the hospital. They may need oxygen, medicines, and a feeding tube for months or years.

Some babies will have problems crawling, walking, talking, and eating. They will need to see physical or occupational therapists to help them develop muscles and strength.

References

Carlo WA, Ambalavanan N. Respiratory tract disorders. In: Kliegman RM, Stanton BF, St. Geme JW, Schor NF, eds. Nelson Textbook of Pediatrics. 20th ed. Philadelphia, PA: Elsevier; 2016:chap 101.

Hollinger LE, Harting MT, Lally KP. Long-term follow-up of congenital diaphragmatic hernia. Semin Pediatr Surg. 2017;26(3):178-184. PMID: 28641757 www.ncbi.nlm.nih.gov/pubmed/28641757.

Keller BA, Hirose S, Farmer DL. Surgical disorders of the chest and airways. In: Gleason CA, Juul SE, eds. Avery's Diseases of the Newborn. 10th ed. Philadelphia, PA: Elsevier; 2018:chap 49.

Tsao KJ, Lally KP. Congenital diaphragmatic hernia and eventration. In: Holcomb GW, Murphy JP, Ostlie DJ, eds. Ashcraft's Pediatric Surgery. 6th ed. Philadelphia, PA: Elsevier Saunders; 2014:chap 24.

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Review Date: 11/11/2018

Reviewed By: Kimberly G. Lee, MD, MSc, IBCLC, Clinical Professor of Pediatrics, Division of Neonatology, Medical University of South Carolina, Charleston, SC. Review provided by VeriMed Healthcare Network. Also reviewed by David Zieve, MD, MHA, Medical Director, Brenda Conaway, Editorial Director, and the A.D.A.M. Editorial team.

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