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Related Experiment Videos

[SeHCAT scanning in bile acid malabsorption]

L H Thomsen1, A K Arveschough, P Gustenhoff

  • 1Aalborg Sygehus, medicinsk gastroenterologisk afdeling.

Ugeskrift for Laeger
|September 28, 1998
PubMed
Summary
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The SeHCAT test effectively identifies bile acid malabsorption (BAM) across various types, including idiopathic BAM, which may be more common than previously thought. This diagnostic tool aids in classifying BAM and guiding treatment for chronic diarrhea.

Area of Science:

  • Gastroenterology
  • Diagnostic Imaging

Context:

  • Chronic diarrhea is a common symptom with multiple causes.
  • Bile acid malabsorption (BAM) is a significant contributor to chronic diarrhea, classified into three types.
  • The SeHCAT test is a radiopharmaceutical used to assess bile acid absorption.

Purpose:

  • To evaluate the SeHCAT test's utility in diagnosing different types of bile acid malabsorption (BAM).
  • To assess the prevalence of idiopathic BAM (Type 2) and BAM associated with predisposing conditions (Type 3).

Summary:

  • The SeHCAT test demonstrated high sensitivity in detecting BAM in patients with ileal resection (Type 1).
  • BAM was identified in 28 of 42 patients with non-resected Crohn's disease or radiation injury (Type 1).
  • Idiopathic BAM (Type 2) was diagnosed in 33 of 150 patients with unexplained chronic diarrhea, suggesting it is underdiagnosed. SeHCAT values were lower in Type 3 BAM compared to Type 2.

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Impact:

  • The SeHCAT test is a valuable tool for routine investigation of suspected BAM.
  • Findings suggest idiopathic BAM is more prevalent than recognized.
  • Identifying predisposing conditions may strengthen the indication for SeHCAT testing in clinical practice.