Advances in pediatric surgery

Korean Association of Pediatric Surgeons (대한소아외과학회)
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Infantile Hypertrophic Pyloric Stenosis (IHPS) -Early postoperative changes of pylorus after pyloromyotomy using ultrasonogram in patients with IHPS-

영아 비후성 유문부 협착증에서 초음파 검사를 이용한 수술 후 유문부의 조기 변화

  • Baik, Hong-Kyu (Department of General Surgery, Division of Pediatric Surgery, College of Medicine, Hanyang University) ;
  • Jung, Poong-Man (Department of General Surgery, Division of Pediatric Surgery, College of Medicine, Hanyang University) ;
  • Kim, Yong-Soo (Division of Radiology, College of Medicine, Hanyang University)
  • 백홍규 (한양대학교 의과대학 외과학교실 소아외과) ;
  • 정풍만 (한양대학교 의과대학 외과학교실 소아외과) ;
  • 김용수 (한양대학교 의과대학 진단방사선과학교실)
  • Published : 1999.06.30
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Abstract

The length, diameter and muscle thickness of the pylorus were measured by ultrasonograms in 15 infants with infantile hypertrophic pyloric stenosis(IHPS). These measurements were compared to assemble measurements of infants who came in for the routine vaccination and underwent ultrasonogram. This study also studied by ultrasound the changes in the pylorus of patients who underwent pyloromyotomy 4 weeks and 8 weeks postoperatively. According to $Carver^5$, the pyloric muscle volume(PMV) and pyloric muscle index(PMI) were calculated in each case. The pyloric muscle volume, PMI and the thickness of pyloric muscle proved to be a more reliable guide to diagnose IHPS than length and diameter of pylorus. The pyloric muscle length, diameter, thickness and pyloric muscle volume were not normalized at 4 and 8 weeks after pyloromyotomy. However, pyloric muscle index was normalized at 4 weeks postoperatively perhaps as the result of rapid weight gain after pyloromyotomy.

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