ABS General Surgery

Practice session

A 6-week-old firstborn male presents with 1 week of projectile, nonbilious emesis after feeding. He is dehydrated. Labs show hypochloremic, hypokalemic metabolic alkalosis (Cl 88, K 2.9, HCO3 34). An 'olive' is palpable in the epigastrium. What is the diagnosis and the initial management?

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