Meconium is the first stool of an infant. Sometimes this stool is passed into the amniotic fluid that surrounds the baby in pregnancy.
Meconium aspiration is when the meconium is inhaled into the baby’s lungs. Meconium aspiration syndrome (MAS) is a set of symptoms that may result from meconium inhalation.
Factors that may increase your baby’s risk of meconium aspiration include:
- Post-term delivery—delivery after 42 weeks of pregnancy
- Cesarean delivery
- Abnormal heart rate during labor
- Reduced amniotic fluid
- Low or high birth weight
- Meconium below the baby’s vocal cords
- Low APGAR score after birth—assessment score of baby after birth
Factors in the mother that may increase the chance of meconium aspiration in the child include:
- High blood pressure
- Respiratory disease
- Heart disease
- Heavily meconium stained amniotic fluid
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Meconium aspiration may not cause serious problems. Your doctor will monitor your baby. Other treatment may not be needed.
If your child is not vigorous in the delivery room the doctor may need to intubate your child to remove meconium from the trachea (breathing tube).
Supportive care may be needed if the aspiration is causing breathing difficulty. Your baby may need to be monitored in a neonatal intensive care unit (NICU).
Talk with your doctor about the best treatment plan. Options include:
MAS can lower the amount of oxygen to your baby’s body. Your baby may be given oxygen in the delivery room. The oxygen will be given through a mask or a hood that fits over the baby’s head. This will improve the amount of oxygen in the body by making more available in the lungs.
The therapy may be continued if your baby continues to have problems breathing.
Your baby may be given IV fluids to control blood pressure and glucose levels.
Your baby may be given medication. The medication will coat the lungs and help clear the airways. This will also help your baby’s lungs mature.
Other medication may include antibiotics or heart medication. A special gas called nitric oxide may also be added. This gas can help open the blood vessels in the lungs. This will let more oxygen enter the body.
In some cases, your baby may not be able to breathe properly on their own. Mechanical ventilation may be used to help your baby breathe.