Meconium is a completely normal part of your baby’s first days. It is their very first stool, which is usually passed after birth. But, in some cases, babies release meconium while still in the womb.

“Meconium” is the medical term for the substance (stool) that is passed during a baby’s first bowel movement. You’ll typically see it within the first 2 days after birth, but it may happen sooner or ...

Meconium aspiration syndrome (MAS) remains a serious neonatal respiratory disorder that occurs when newborns inhale meconium‐stained amniotic fluid during delivery. This condition, often associated ...