Meconium staining

Meconium is the greenish-black sticky material passed from the baby’s bowels after birth. In some instances, the fetus will pass meconium into the amniotic fluid while still in the womb, indicated by the presence of meconium staining of the liquor after the membranes have ruptured. Meconium staining is more common approaching and after term. It may indicate the presence of fetal distress in labour, but not universally so. During fetal distress, fetal acidosis may stimulate the fetus to gasp and inhale meconium into the airways and lungs, a condition known as neonatal meconium aspiration syndrome.