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Investigation and diagnosis of hypertrophic pyloric stenosis

S P Huddy1

  • 1Department of Surgery, Frimley Park Hospital, UK.

Journal of the Royal College of Surgeons of Edinburgh
|April 1, 1991
PubMed

Insights

Diagnosing hypertrophic pyloric stenosis (HPS) in infants can be challenging. Test feeding is effective, but ultrasound can screen positive HPS cases when test feeding is negative.

Area of Science:

  • Pediatric Surgery
  • Neonatal Medicine
  • Diagnostic Imaging

Background:

  • Hypertrophic pyloric stenosis (HPS) is a common cause of non-bilious vomiting in infants.
  • Accurate and timely diagnosis of HPS is crucial for appropriate management and preventing complications.
  • Current diagnostic methods have limitations, necessitating evaluation of alternative or complementary approaches.

Purpose of the Study:

  • To review the diagnostic accuracy of test feeding and ultrasound in infants investigated for hypertrophic pyloric stenosis (HPS).
  • To evaluate the utility of these methods in identifying infants requiring surgical intervention for HPS.

Main Methods:

  • Retrospective review of 49 infants investigated or operated on for HPS over 30 months.
  • Analysis of diagnostic performance, including false positive and false negative rates, for test feeding and ultrasound examinations.

Main Results:

  • Significant weight loss was observed in 18 infants, with 16 confirmed HPS cases.
  • Test feeding demonstrated 1 false positive and 6 false negatives (27/29 true negatives).
  • Ultrasound showed 4 false positives and 1 false negative (11/12 true negatives).

Conclusions:

  • Positive test feeding results in infants suspected of HPS warrant surgical intervention.
  • Ultrasound can serve as a screening tool when test feeding is negative, but positive ultrasound findings require further confirmation before surgery.

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