{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,9,4]],"date-time":"2026-09-04T00:11:57Z","timestamp":1788480717016,"version":"build-2803163510"},"reference-count":36,"publisher":"Wiley","issue":"6","license":[{"start":{"date-parts":[[2024,4,12]],"date-time":"2024-04-12T00:00:00Z","timestamp":1712880000000},"content-version":"vor","delay-in-days":0,"URL":"http:\/\/creativecommons.org\/licenses\/by-nc-nd\/4.0\/"}],"content-domain":{"domain":["onlinelibrary.wiley.com"],"crossmark-restriction":true},"short-container-title":["Neurogastroenterology Motil"],"published-print":{"date-parts":[[2024,6]]},"abstract":"<jats:title>Abstract<\/jats:title><jats:sec><jats:title>Background<\/jats:title><jats:p>Glucose breath test (GBT) is used for the diagnosis of small intestine bacterial overgrowth. A restrictive diet without fibers and\/or fermentable food is recommended on the day before the test. The aim of our retrospective study was to evaluate the impact of two different restrictive diets on the results of GBT.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>A change of the pretest restrictive diet was applied in our lab on September 1, 2020. The recommended diet was a fiber\u2010free diet before this date, and a fiber\u2010free diet plus restriction of all fermentable food afterward. We thus compared the results of GBT performed before (group A) and after (group B) this pretest diet modification. Demographics, reasons to perform GBT, digestive symptoms, and hydrogen and methane baseline values and variations after glucose ingestion were compared between the two groups.<\/jats:p><\/jats:sec><jats:sec><jats:title>Key Results<\/jats:title><jats:p>269 patients underwent GBT in group A, and 316 patients in group B. The two groups were comparable in terms of demographics. Methane and hydrogen baseline values were significantly higher in group A (respectively 14 [18] vs. 8 [14] ppm, <jats:italic>p<\/jats:italic>\u2009&lt;\u20090.01 and 11 [14] vs. 6 [8] ppm, <jats:italic>p<\/jats:italic>\u2009&lt;\u20090.01). The percentage of positive tests was higher in group A for methane (43% vs. 28%, <jats:italic>p<\/jats:italic>\u2009&lt;\u20090.05), and for hydrogen (18% vs. 12%, <jats:italic>p<\/jats:italic>\u2009=\u20090.03).<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusion &amp; Inferences<\/jats:title><jats:p>This retrospective study suggests the importance of the restrictive diet prior to GBT. A strict limitation of fibers and fermentable food decreased hydrogen and methane baseline values, and the prevalence of positive GBT. Thus a strict restrictive diet should be recommended on the day before the test, in order to limit the impact of food on hydrogen and methane breath levels, and possibly improve the diagnosis quality of GBT.<\/jats:p><\/jats:sec>","DOI":"10.1111\/nmo.14801","type":"journal-article","created":{"date-parts":[[2024,4,12]],"date-time":"2024-04-12T10:28:45Z","timestamp":1712917725000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":5,"title":["Glucose breath test for the detection of small intestine bacterial overgrowth: Impact of diet prior to the test"],"prefix":"10.1111","volume":"36","author":[{"given":"Nastasia","family":"Mattio","sequence":"first","affiliation":[{"name":"Hospices Civils de Lyon Digestive Functional Explorations  Lyon France"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Pierre","family":"Pradat","sequence":"additional","affiliation":[{"name":"Hospices Civils de Lyon Centre de recherche 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