title: Pyloric stenosis: the Christchurch experience.
abstract: OBJECTIVE
  Evaluation of the performance of a general paediatric unit in diagnosis and treatment of infantile hypertrophic pyloric stenosis, including morbidity and measurable outcomes in relationship to changing management.
  
  
  METHODS
  Retrospective case note audit.
  
  
  RESULTS
  In the 11 year period 1980-91, 103 infants underwent surgical correction of pyloric stenosis, after correction of metabolic disturbance. There was a predominance of males (82.5%), but the incidence of first born infants affected was no greater than the population birth order. While the clinical diagnosis was firm in the majority of infants, over 75% had at least one radiologic imaging procedure. On objective criteria, 80% of patients were less than 5% dehydrated, despite having electrolyte and acid-base derangement. The relatively high incidence of mucosal perforation (31.1%) did not lead to further morbidity. The incidence of postoperative vomiting (19.4%) was significantly less than in previously reported series. There were no deaths, one patient suffered longterm neurologic deficit following profound hypoglycaemia. A change in preoperative management to aggressive rehydration did not reduce morbidity, and was associated with an increased median postoperative stay.
  
  
  CONCLUSIONS
  Pyloric stenosis remains a relatively common surgical problem of infancy. The cornerstone of diagnosis remains a clinical one; however there is a place for radiology. Operative repair is elective, following correction of metabolic derangement. In a general paediatric unit, long term sequelae of initial morbidity are rare.
authors.affiliation: Christchurch Hospital.
authors.forename: D A
authors.initials: DA
authors.lastname: Graham
authors.forename: N
authors.initials: N
authors.lastname: Mogridge
authors.forename: G D
authors.initials: GD
authors.lastname: Abbott
authors.forename: J C
authors.initials: JC
authors.lastname: Kennedy
authors.forename: P M
authors.initials: PM
authors.lastname: Kempthore
authors.forename: J R
authors.initials: JR
authors.lastname: Davidson
mesh_terms: D001835:Body Weight; D003681:Dehydration / Q000175:diagnosis / Q000209:etiology / Q000628:therapy; D004573:Electrolytes / Q000032:analysis; D005260:Female; D006801:Humans; D015994:Incidence; D007223:Infant; D007231:Infant, Newborn; D007902:Length of Stay / Q000706:statistics & numerical data; D008297:Male; D008485:Medical Audit; D009520:New Zealand / Q000453:epidemiology; D017063:Outcome Assessment, Health Care; D011183:Postoperative Complications / Q000453:epidemiology / Q000209:etiology; D011707:Pyloric Stenosis / Q000150:complications / Q000453:epidemiology / Q000601:surgery; D012189:Retrospective Studies; D012737:Sex Factors; D013997:Time Factors; D016896:Treatment Outcome; D014839:Vomiting / Q000453:epidemiology / Q000209:etiology
chemical_list: D004573:Electrolytes