title: Postoperative pyloric stenosis in the newborn: a forgotten problem.
abstract: OBJECTIVE
  Postoperative vomiting in newborns is a common finding usually attributed to the original surgery. We report 10 newborns whose postoperative course was complicated by pyloric stenosis.
  
  
  METHODS
  We reviewed the charts of all newborns who had pyloric stenosis diagnosed after a major abdominothoracic operation over the past 30 years (1973-2003) at a single children's hospital.
  
  
  RESULTS
  Ten cases of pyloric stenosis were diagnosed in postoperative newborns (esophageal atresia [3], small bowel atresia [2], diaphragmatic hernia, fetus-in-fetu, imperforate anus, lung biopsy, malrotation [1]). Their mean gestational age was 36 weeks, birth weight was 3.2 kg, and age at newborn operation was 2 days. Their postoperative feeds started on the sixth day (mean), and the pyloric stenosis vomiting started on the 14th day. It took a mean of 12 days to make the diagnosis of pyloric stenosis, and this was done entirely by diagnostic imaging. Mean age at pyloromyotomy was 3 1/2 weeks. A new incision was used in 7 patients. Postoperative feedings started on the first day; all did well. There were 3 complications (bowel obstruction), all requiring operation.
  
  
  CONCLUSIONS
  Unfortunately, this review offers no specific insight or novel advice to help the readership think about the diagnosis in such a postoperative setting.
authors: The Division of General Surgery, The Hospital for Sick Children, Toronto, Ontario, Canada M5G 1X8.
authors: Ahmed
authors: A
authors: Nasr
authors: Sigmund H
authors: SH
authors: Ein
mesh_terms: D013505:Digestive System Surgical Procedures / Q000009:adverse effects*; D005260:Female; D006801:Humans; D007223:Infant; D007231:Infant, Newborn; D008297:Male; D020250:Postoperative Nausea and Vomiting / Q000209:etiology*; D011707:Pyloric Stenosis / Q000209:etiology*; D019616:Thoracic Surgical Procedures / Q000009:adverse effects*