What is the classic history for this patient?
First born male with billious vomitting
After discovering the diagnosis, what is the best next step in clinical care?
Always remember, while surgical intervention is the definitive treatment, it is rarely indicated in an emergent setting. The first order of business is admission to inpatient floor and correction of electrolyte and acid base abnormalities (typically, hypochloremic, hypokalemic metabolic alkalosis).
Ultrasound demonstrates an elongated pylorus (2.3cm) with a thickened muscular wall (0.5cm).