What is the expected time frame for the first meconium stool in full-term newborns?

What is the expected time frame for the first meconium stool in full-term newborns?

• A. The first meconium stool should occur within 24 to 48 hours of birth.
• B. The first meconium stool should occur immediately after birth.
• C. The first meconium stool should occur after 1 week.
• D. The first meconium stool is not expected in term newborns.

Answer: (A)

Meconium passage timing reflects how the newborn’s digestive system is starting to function. In a full-term infant, the first meconium is normally passed within the first 24 to 48 hours after birth. Meconium is the dark, tar-like stool formed from swallowed amniotic fluid, mucosal cells, and bile, and its passage shows that gut motility has begun after birth. Passing it immediately at birth isn’t typical because the newborn needs a short period for peristalsis to start. If meconium hasn’t appeared by about 48 hours, this warrants evaluation for potential issues such as bowel obstruction or delayed motility. Waiting until a week is far outside the expected window for a term newborn.

Meconium passage timing reflects how the newborn’s digestive system is starting to function. In a full-term infant, the first meconium is normally passed within the first 24 to 48 hours after birth. Meconium is the dark, tar-like stool formed from swallowed amniotic fluid, mucosal cells, and bile, and its passage shows that gut motility has begun after birth. Passing it immediately at birth isn’t typical because the newborn needs a short period for peristalsis to start. If meconium hasn’t appeared by about 48 hours, this warrants evaluation for potential issues such as bowel obstruction or delayed motility. Waiting until a week is far outside the expected window for a term newborn.