10 Days Of Progressively in Pediatrics — Case | Pediatric Gastroenterology | SMLE Q#12072
SMLE Question #12072
Pediatrics
Pediatric Gastroenterology
Objective: OBJ-289
Last updated: February 2026
A 6-week-old male infant is brought to the emergency department with 10 days of progressively worsening, non-bilious projectile vomiting after most feeds. His parents report poor weight gain, fewer wet diapers, and increasing lethargy. He appears dehydrated with sunken eyes and dry mucous membranes. A small, firm, mobile mass is palpated in the right upper abdomen, and abdominal ultrasound shows pyloric muscle thickening and elongation. What is the most appropriate initial management step?
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