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Small intestinal bacterial overgrowth syndrome
Jan Bures1, Jiri Cyrany, Darina Kohoutova
12nd Department of Medicine, Charles University in Praha, Faculty of Medicine at Hradec Kralove, University Teaching Hospital, Sokolska 581, 500 05 Hradec Kralove, Czech Republic. bures@lfhk.cuni.cz
World Journal of Gastroenterology
|June 24, 2010
Summary
Small intestinal bacterial overgrowth (SIBO) is a serious condition caused by bacterial imbalance in the upper gut. Diagnosis and treatment require a comprehensive approach addressing underlying causes and symptoms.
Area of Science:
- Gastroenterology
- Microbiology
- Internal Medicine
Background:
- The human gut hosts a complex microbial ecosystem crucial for health.
- Imbalances in this intestinal microbiome can lead to conditions like small intestinal bacterial overgrowth syndrome (SIBO).
- SIBO involves an increased number or altered type of bacteria in the upper gastrointestinal tract.
Purpose of the Study:
- To define small intestinal bacterial overgrowth (SIBO) and its associated factors.
- To outline the diagnostic methods and therapeutic strategies for SIBO.
- To discuss the prognosis of SIBO.
Main Methods:
- Review of endogenous defense mechanisms against bacterial overgrowth.
- Analysis of etiological factors contributing to SIBO, including motility disorders and anatomical abnormalities.
- Description of diagnostic tools: jejunal aspirates and non-invasive breath tests (hydrogen/methane).
Main Results:
- SIBO results from a failure of protective mechanisms or anatomical/motility issues.
- Common symptoms include bloating, diarrhea, malabsorption, weight loss, and malnutrition.
- Breath tests are widely used for SIBO diagnosis, though jejunal aspirates remain the gold standard.
Conclusions:
- SIBO management necessitates a multifaceted, individualized approach.
- Treatment involves addressing underlying diseases, nutritional support, and selective antibiotics.
- Prognosis is often linked to the severity of the primary condition causing SIBO.
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