Meconium is the earliest stool of a mammalian infant resulting from defecation. Unlike later feces, meconium is composed of materials ingested during the time the infant spends in the uterus: …

Sep 7, 2022 · Meconium is your baby's first poop. It's darker and thicker than typical poop and extremely sticky. Meconium builds up inside your baby's intestines from swallowing amniotic …

Nov 17, 2023 · “Meconium” is the medical term for the substance (stool) that is passed during a baby’s first bowel movement.

Meconium aspiration happens when a baby is stressed and gasps while still in the womb, or soon after delivery when taking those first breaths of air. When gasping, a baby may inhale amniotic …

Nov 14, 2025 · Learn why some babies poop in the womb and how it can affect labor. Discover how to manage meconium and ensure your baby's safety.

Meconium is the first feces, or stool, of the newborn. Meconium aspiration syndrome occurs when a newborn breathes a mixture of meconium and amniotic fluid into the lungs around the time of …

Apr 2, 2025 · Meconium is the build-up of waste products in the intestines of the fetus. It is often described as black and tarry. It starts to accumulate in the intestines at around 34 weeks' …

Jul 19, 2025 · Meconium is a newborn’s first stool, a substance that forms in the fetal intestines during pregnancy from ingested materials like amniotic fluid, mucus, bile, and water. The …

2 days ago · This video covers: What is MSL (Meconium-Stained Liquor)? Why newborns pass meconium before birth What is Meconium Aspiration Syndrome (MAS)? Step-by-step …

Meconium is the first stool a newborn passes, and is very viscous, or thick. It forms while the fetus develops in utero and consists of intestinal epithelial cells, bile, succus entericus, mucus, …