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Is urinary 5-hydroxyindoleacetic acid helpful for early diagnosis of acute appendicitis?
MedLine Citation:
PMID:  21450436     Owner:  NLM     Status:  Publisher    
OBJECTIVE: Acute appendicitis is the most common abdominal emergency in children and young adults. There are a lot of serotonin-containing cells in the appendix, which release serotonin into the bloodstream in response to inflammation. Consequently, serotonin is converted to 5-hydroxyindoleacetic acid (5-HIAA) and secreted into the urine. On this basis, urinary 5-HIAA could be a marker for acute appendicitis. In this study, we investigated the value of 5-HIAA levels in spot urine in the diagnosis of acute appendicitis. METHODS: The urinary 5-HIAA was measured by an enzyme-linked immunosorbent assay in the spot urine of 70 patients who presented to the emergency department with a clinical picture of acute appendicitis. Urine concentration results were correlated to final histopathologic reports, and the diagnostic value of this factor was measured. RESULTS: Diagnosis of appendicitis was confirmed by histopathologic reports in 59 of 70 patients with presumptive diagnosis of appendicitis. Considering 5.25 mg/L as the cutoff point for urinary 5-HIAA, 28 patients had high urinary 5-HIAA levels, whereas 42 patients had values within reference range. The sensitivity and specificity of this test was 44% and 81%, respectively. CONCLUSIONS: The measurement of urinary 5-HIAA levels is not an ideal diagnostic tool for ruling out or determination of acute appendicitis.
Ali Jangjoo; Abdol-Reza Varasteh; Mostafa Mehrabi Bahar; Naser Tayyebi Meibodi; Habibollah Esmaili; Narges Nazeri; Mohsen Aliakbarian; Shahriar H Azizi
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Publication Detail:
Type:  JOURNAL ARTICLE     Date:  2011-3-28
Journal Detail:
Title:  The American journal of emergency medicine     Volume:  -     ISSN:  1532-8171     ISO Abbreviation:  -     Publication Date:  2011 Mar 
Date Detail:
Created Date:  2011-3-31     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  8309942     Medline TA:  Am J Emerg Med     Country:  -    
Other Details:
Languages:  ENG     Pagination:  -     Citation Subset:  -    
Copyright Information:
Copyright © 2011. Published by Elsevier Inc.
Surgical Oncology Research Center, Imam Reza Hospital, Faculty of Medicine, Mashhad University of Medical Sciences, Mashhad, Iran.
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