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Prevalence, risk factors, and treatment of small intestinal bacterial overgrowth in children
Yu Kyung Cho1, Jin Lee2, Chang Nyol Paik1
1Department of Internal Medicine, College of Medicine, The Catholic University of Korea, Seoul, Korea.
Insights
Pediatric small intestinal bacterial overgrowth (SIBO) presents with diverse symptoms. This review covers SIBO
Area of Science:
- Pediatric Gastroenterology
- Microbiology
- Internal Medicine
Background:
- Small intestinal bacterial overgrowth (SIBO) involves excessive bacteria in the small bowel.
- Pediatric SIBO is a complex condition with varied symptoms, from mild GI issues to severe malabsorption.
- Predisposing factors include motility disorders, systemic diseases, and anatomical changes.
Purpose of the Study:
- To review the prevalence, diagnostic methods, and treatment outcomes of SIBO in pediatric populations.
- To highlight the challenges in diagnosing pediatric SIBO due to a lack of standardized testing.
- To discuss the association between SIBO and functional gastrointestinal disorders in children.
Main Methods:
- Literature review of studies on pediatric SIBO.
- Analysis of diagnostic approaches, including the carbohydrate breath test.
- Examination of treatment strategies and their efficacy.
Main Results:
- The carbohydrate breath test is a common, noninvasive diagnostic tool but lacks standardization.
- SIBO shares symptoms with functional gastrointestinal disorders like irritable bowel syndrome in children.
- Antibiotic treatment, particularly with Rifaximin, is a primary therapeutic approach, though pediatric data is limited and results are mixed.
Conclusions:
- Standardized diagnostic methods for pediatric SIBO are needed.
- Further research on antibiotic efficacy in pediatric SIBO and related conditions is warranted.
- Comprehensive management involves addressing predisposing factors, nutritional support, symptom control, and targeted antibacterial therapy.
Abstract:
Small intestinal bacterial overgrowth (SIBO) is defined as the presence of an excessive number of bacteria within the small bowel. Pediatric SIBO is a heterogeneous disorder that manifests as various symptoms ranging from mild gastrointestinal symptoms to malabsorption or malnutrition. The carbohydrate breath test is a commonly used, safe, and noninvasive diagnostic test; however, a standardized methodology is lacking. Multiple factors, such as neuromuscular disorders, systemic diseases, chronic drug use, or altered intestinal anatomy that disturb intestinal motility or induce an abnormality in the body's defense systems against intestinal bacteria, predispose children to SIBO. The high prevalence and similar symptoms of SIBO in functional gastrointestinal disorders, including irritable bowel syndrome, suggest an association between them. The principles of treatment include managing predisposing conditions, nutritional support, symptom control, and antibacterial treatment. Rifaximin is the most commonly used drug. To date, studies of antibiotic treatment in pediatric populations with irritable bowel syndrome or SIBO are lacking and have shown mixed results. Here we review the prevalence, diagnostic tests, and treatment results in pediatric populations.
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