Meconium aspiration syndrome
Meconium aspiration syndrome (MAS) is a respiratory problem of newborns. The passage of meconium prior to delivery is a sign of fetal distress, as it is usually aspirated prior to birth. At delivery, the obstetrician should suction the newborn's upper airway after delivery of the head. After delivery of the rest of the baby, the upper airway and stomach should be suctioned, and respiratory support, oxygen and antibiotics administered as necessary.