A 2-week-old infant vomits forcefully immediately after feeding for no apparent reason and is frequently constipated. These signs support which diagnosis?
a. Pyloric stenosis
b. Meconium ileus
c. Esophageal atresia
d. Galactosemia
ANS: A
Between 2 and 8 weeks after birth, an infant who has fed well and gained weight begins force-ful, nonbilious vomiting immediately after feeding. Constipation occurs because little food reaches the intestine. The signs do not support a diagnosis of meconium ileus, esophageal atresia, or galactosemia.
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