When the newborn infant is fed,the most likely cause of regurgitation is
A) Placing the infant in a prone position after a feeding
B) The gastrocolic reflex
C) An underdeveloped pyloric sphincter
D) A relaxed cardiac sphincter

Question

Quizplus · Accepted Answer

The relaxed cardiac sphincter is the most likely cause of regurgitation in a newborn infant after feeding. The cardiac sphincter is responsible for preventing stomach contents from flowing back into the esophagus. In newborns, this sphincter is not fully developed and can therefore allow for regurgitation of milk or formula after feeding.

When the Newborn Infant Is Fed,the Most Likely Cause of Regurgitation