NCIt synonyms : Neonatal Aspiration of Meconium; MAS;
NCIt definition : A serious condition in which a newborn breathes a mixture of meconium (the first intestinal
discharge) and amniotic fluid into the lungs around the time of delivery. Meconium
aspiration syndrome occurs in 5-10 percent of births and typically occurs when the
infant is stressed, as when the infant is past its due date.;
Alternative definition : NICHD: Aspiration of meconium around the time of delivery resulting in severe respiratory
distress.;