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
D
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A The infant should be placed in a supine position.
B The gastrocolic reflex increases intestinal peristalsis after the stomach fills.
C The pyloric sphincter goes from the stomach to the intestines.
D The underlying cause of newborn regurgitation is a relaxed cardiac sphincter.
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