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The prevalence of small intestinal bacterial vergrowth in irritable bowel syndrome.
Hepatogastroenterology. 2009 May-Jun; 56(91-92):718-21.H

Abstract

BACKGROUND/AIMS

This study was performed to evaluate the prevalence of small intestinal bacterial overgrowth in patients with irritable bowel syndrome by doing a lactulose breath hydrogen test.

METHODOLOGY

Two hundred and fifty-eight patients with irritable bowel syndrome were referred to us for the performance of lactulose breath hydrogen test. After an overnight fast, fasting breath hydrogen in parts per million was recorded using a portable analyzer which has a sealed electrochemical sensor for hydrogen. After an oral dose of 10 g lactulose, breath hydrogen concentration was recorded every 10 minutes for 70 minutes. An increase of 5 parts per million in hydrogen over the baseline that occurred 60 minutes or sooner after lactulose was considered positive for small intestinal bacterial overgrowth.

RESULTS

There were 75 (29.0%) men and 183 women (70.9%). The mean age was 49.0 (range 16-87) years. Small intestinal bacterial overgrowth was found in 89 (34.5%) of patients. The prevalence of small intestinal bacterial overgrowth in men (30.6%) was similar to that in women (36.0%). Small intestinal bacterial overgrowth was more common in diarrhea dominant irritable bowel patients (58.4%) compared to constipation dominant irritable bowel patient (41.5%). The frequency of small intestinal bacterial overgrowth was higher in women compared to that in men.

CONCLUSIONS

Small intestinal bacterial overgrowth was found in 34.5% of patients with irritable bowel syndrome. Small intestinal bacterial overgrowth was more likely to be present in diarrhea dominant irritable bowel patients compared to those with constipation dominant irritable bowel patients. Although the prevalence of small intestinal overgrowth was similar in men and women the frequency of small bowel overgrowth in women was higher compared to that in men.

Authors+Show Affiliations

Division of Gastroenterology, University of California, Davis, School of Medicine, Sacramento, California, USA. nirmal.mann@ucdmc.ucdavis.eduNo affiliation info available

Pub Type(s)

Journal Article

Language

eng

PubMed ID

19621689

Citation

Mann, Nirmal S., and Michele Limoges-Gonzales. "The Prevalence of Small Intestinal Bacterial Vergrowth in Irritable Bowel Syndrome." Hepato-gastroenterology, vol. 56, no. 91-92, 2009, pp. 718-21.
Mann NS, Limoges-Gonzales M. The prevalence of small intestinal bacterial vergrowth in irritable bowel syndrome. Hepatogastroenterology. 2009;56(91-92):718-21.
Mann, N. S., & Limoges-Gonzales, M. (2009). The prevalence of small intestinal bacterial vergrowth in irritable bowel syndrome. Hepato-gastroenterology, 56(91-92), 718-21.
Mann NS, Limoges-Gonzales M. The Prevalence of Small Intestinal Bacterial Vergrowth in Irritable Bowel Syndrome. Hepatogastroenterology. 2009 May-Jun;56(91-92):718-21. PubMed PMID: 19621689.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - The prevalence of small intestinal bacterial vergrowth in irritable bowel syndrome. AU - Mann,Nirmal S, AU - Limoges-Gonzales,Michele, PY - 2009/7/23/entrez PY - 2009/7/23/pubmed PY - 2009/9/18/medline SP - 718 EP - 21 JF - Hepato-gastroenterology JO - Hepatogastroenterology VL - 56 IS - 91-92 N2 - BACKGROUND/AIMS: This study was performed to evaluate the prevalence of small intestinal bacterial overgrowth in patients with irritable bowel syndrome by doing a lactulose breath hydrogen test. METHODOLOGY: Two hundred and fifty-eight patients with irritable bowel syndrome were referred to us for the performance of lactulose breath hydrogen test. After an overnight fast, fasting breath hydrogen in parts per million was recorded using a portable analyzer which has a sealed electrochemical sensor for hydrogen. After an oral dose of 10 g lactulose, breath hydrogen concentration was recorded every 10 minutes for 70 minutes. An increase of 5 parts per million in hydrogen over the baseline that occurred 60 minutes or sooner after lactulose was considered positive for small intestinal bacterial overgrowth. RESULTS: There were 75 (29.0%) men and 183 women (70.9%). The mean age was 49.0 (range 16-87) years. Small intestinal bacterial overgrowth was found in 89 (34.5%) of patients. The prevalence of small intestinal bacterial overgrowth in men (30.6%) was similar to that in women (36.0%). Small intestinal bacterial overgrowth was more common in diarrhea dominant irritable bowel patients (58.4%) compared to constipation dominant irritable bowel patient (41.5%). The frequency of small intestinal bacterial overgrowth was higher in women compared to that in men. CONCLUSIONS: Small intestinal bacterial overgrowth was found in 34.5% of patients with irritable bowel syndrome. Small intestinal bacterial overgrowth was more likely to be present in diarrhea dominant irritable bowel patients compared to those with constipation dominant irritable bowel patients. Although the prevalence of small intestinal overgrowth was similar in men and women the frequency of small bowel overgrowth in women was higher compared to that in men. SN - 0172-6390 UR - https://www.unboundmedicine.com/medline/citation/19621689/The_prevalence_of_small_intestinal_bacterial_vergrowth_in_irritable_bowel_syndrome_ DB - PRIME DP - Unbound Medicine ER -