Meconium is a thick and sticky greenish black substance that forms in
the intestines of a
fetus. It is produced as the fetus swallows and
digests the amniotic fluid inside the womb. When the baby is born, meconium is
the first stool the baby passes.
Most normal newborns pass the meconium within 48 hours after birth.
Some babies cannot pass the meconium because of a blockage in the intestines,
known as a meconium plug. In babies born with
cystic fibrosis, the intestines may become blocked
from excessive mucus production. Stuck meconium must be flushed out by an
enema. Sometimes the blockage is so severe that
surgery is needed.
How this information was developed to help you make better health decisions.