Pyloric Stenosis

  • Dan W. Parrish
  • Jonathan H. DeAntonio
  • David A. LanningEmail author


Pyloric stenosis occurs between 2 and 8 weeks of age (male/female of 4:1). Initially, the child will feed well with gradual increasing nonbilious, projectile emesis. The enlarged pylorus can feel like an olive in the upper abdomen. Typically, the child presents with dehydration and a hypokalemic, hypochloremic metabolic alkalosis. Ultrasound or upper gastrointestinal series may be performed to aid with diagnosis. The primary emphasis should be resuscitation and correcting electrolyte abnormalities. Upon normalization of lab values, the child can be taken to the operating room for an open or laparoscopic pyloromyotomy.


Pyloric stenosis Nonbilious emesis Projectile vomiting Olive Hypokalemic hypochloremic metabolic alkalosis Pyloromyotomy 


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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Dan W. Parrish
    • 1
  • Jonathan H. DeAntonio
    • 2
    • 3
  • David A. Lanning
    • 2
    • 4
    • 5
    Email author
  1. 1.Department of Pediatric Surgery, Batson Children’s HospitalUniversity of Mississippi Medical CenterJacksonUSA
  2. 2.Division of Pediatric Surgery, Department of General SurgeryVirginia Commonwealth University HealthRichmondUSA
  3. 3.Department of SurgeryVirginia Commonwealth University School of MedicineRichmondUSA
  4. 4.Department of Surgery and PediatricsChildren’s Hospital of RichmondRichmondUSA
  5. 5.Department of SurgeryVirginia Commonwealth University School of MedicineRichmondUSA

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