Cure8 research brief
If you have Crohn’s disease, especially with small‑bowel strictures or after stricture treatments, breath tests for SIBO may change and negative tests before an intervention might later become positive. That could affect symptom evaluation and decisions about testing after procedures.
Patients with Crohn’s disease (particularly those with small‑bowel strictures or who are undergoing endoscopic dilation or ileal surgery), gastroenterologists, and researchers studying the gut microbiome or SIBO in IBD.
This prospective cohort study tested for small-intestinal bacterial overgrowth (SIBO) using glucose hydrogen–methane breath testing in Japanese patients with Crohn’s disease (CD), comparing those with and without small‑bowel strictures and healthy controls.
The main finding reported is that hydrogen-type SIBO (H‑SIBO) was uncommon overall and appeared lower than in prior reports.
The authors found that some patients with negative pre‑intervention breath tests later tested positive after stricture-directed interventions (endoscopic balloon dilation or ileal surgery), suggesting that severe strictures can cause false‑negative breath tests and that SIBO status may change after interventions.
How the study was done: Patients were classified by imaging/enteroscopy into stricture vs non‑stricture groups; all underwent glucose hydrogen–methane breath testing using North American Consensus criteria. Primary analyses used pre‑intervention tests and secondary analyses included post‑intervention results after EBD or surgery.
Limitations and tone: The authors caution that the sample size was small and there were methodological constraints; the paper presents prospective data but is not definitive.
this is a single prospective cohort with a relatively small sample size and methodological limitations noted by the authors; findings suggestive but not definitive. The reported lower prevalence compared with prior studies may reflect population, testing, or study‑design differences.
The article is an abstract/full‑text record from a peer‑reviewed journal but should be interpreted in the context of the study’s size and methods.
Review the original publication for the complete reporting, methods, and context.
This Cure8 brief is based on source text from the linked article. Cure8 is informational only and is not a substitute for professional medical advice, diagnosis, or treatment.
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