Hypertrophic pyloric stenosis is a congenital hypertrophy of circular smooth muscle of pylorus; Etiologies are male child (especially 1t born male child), macrolide exposure.
Presents with projectile nonbilious vomiting, olive shaped mass in epigastrium and electrolyte abnormalities (i.e. hypokalemia, hypochloremia, metabolic alkalosis).
Diagnosis:-
1. Serum electrolytes.
2. USG.
3. Barium meal shows string sign.
Management:-
1. Supportive measures like intravenous fluids and correction of electrolyte abnormalities.
2. Surgical management (i.e. Ramstedt-Fredet pyloromyotomy).
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