What are the signs and symptoms of pediatric pyloric stenosis?

Updated: Nov 13, 2018
  • Author: Sathyaseelan Subramaniam, MD, FAAP; Chief Editor: Kirsten A Bechtel, MD  more...
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  • Classically, the infant with pyloric stenosis has nonbilious vomiting or regurgitation, which may become projectile (in as many as 70% of cases), after which the infant is still hungry. [12]
  • Emesis may be intermittent initially, or occur after each feeding.
  • Emesis should not be bilious as the obstruction is proximal to the common bile duct. The emesis may become brown or coffee color due to blood secondary to gastritis or a Mallory-Weiss tear at the gastroesophageal junction.
  • As the obstruction becomes more severe, the infant begins to show signs of dehydration and malnutrition, such as poor weight gain, weight loss, marasmus, decreased urinary output, lethargy, and shock.
  • The infant may develop jaundice, which is corrected upon correction of the disease.

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