LUNG RUPTURE (Pneumothorax or Pneumomediastinum)

Definition: Free air in the chest cavity.

1. What has caused this condition?

There was a tear or rupture in the air sacs (alveoli) in the lungs. This tear allowed air to escape out of the lung and into either the space between the lung and the chest wall (pneumothorax) or into the tissues along the blood vessels (pneumomediastinum). Pneumothorax is relatively common in newborn babies, occurring in approximately 1 percent of all newborns. Many babies have no symptoms. Others have symptoms related to the compression of the lung(s) by the leaked air and need treatment and/or supplemental oxygen. Babies that have other breathing prob- lems and require breath assistance from a breathing machine are at potentially higher risks to develop air leaks in their lungs.

2. How is it treated?

In a lot of cases when the baby is otherwise healthy and without symp- toms, observation is all that is needed and the tear will heal itself and the air be reabsorbed. In cases where the air leak is larger and the baby is having symptoms, the air may need to be pulled out (aspirated) by putting a needle in the baby’s chest wall. After the air in the chest cavity is pulled out, the needle is removed, and the baby is monitored for recurrence. If the leak continues or if the baby is on a breathing machine for support, a drainage tube (chest tube) is placed in the chest wall to continuously drain the air until the leak heals. Many babies that have symptoms due to the free air will also require extra oxygen to keep their oxygen levels in an acceptable range. During this time, your baby may be breathing faster than normal or harder than normal and not be able to feed by mouth. This may require feedings via a tube, or the feedings withheld and IV fluids started. 

3. How long will it take to correct itself?

This depends on the size of the leak. Many babies with small leaks that seal over rapidly are better in twelve to twenty-four hours, sometimes without symptoms. Babies that require needle aspiration or drainage tube placement may require two to three days or more to close the tear and allow the lungs to heal.

4. Do we need to consult with a neonatologist (newborn specialist) or a pediatric surgeon?

If the baby has symptoms or requires aspiration, drainage tube place- ment, or extra oxygen, a neonatologist is often involved in the care. Babies that are just breathing a bit fast or have no symptoms are often watched in newborn nursery by the pediatrician. It is rare that a surgeon or surgery is needed.

5. What tests need to be done to further define the condition?

An X ray of the chest is the test that absolutely confirms that a pneumothorax or pneumomediastinum is present. It can also provide some information as to how much air and compression on the lungs has occurred. Prior to the chest X ray, you may be able to suspect an air leak by listening to the chest and hearing decreased breath sounds on the side with the leak. You can also place a light on the front of the chest (transillumination), which may indicate air has leaked out of the lung and accumulated in the chest.

6. What kind of future complications can we anticipate as a result of this illness?

The majority of babies will have no long-term effects from the air leak itself. The rupture or hole will heal by itself. Any future complications are most likely to occur if the baby is premature or there was another lung problem that required treatment.

7. Are the lungs left weakened from this condition and, if so, in what way?

No, the lungs will heal the tear and recover in almost all cases. If there were other lung problems that were also present, some breathing abnormalities could persist until the lungs are healed from those conditions.

8. After discharge from the hospital, what kind of follow-up will be needed?

As the rupture or tear in the lung is healed at the time of discharge, just routine follow-up with the pediatrician is necessary.