• Y A Kucheryavyy, D N Andreev, and I V Maev.
• Yevdokimov Moscow State University of Medicine and Dentistry.
• Terapevt Arkh. 2020 Dec 15; 92 (12): 535853-58.

AimSystematization of data on the frequency of detection of the syndrome of bacterial overgrowth in the small intestine (SIBO) in patients with functional dyspepsia (FD).Materials And MethodsMEDLINE/PubMed, EMBASE, Cochrane, Google Scholar, the Russian Science Citation Index (RSCI) through July 2020 were searched to identify studies evaluating the prevalence of SIBO in FD. In addition, a search for relevant abstracts was carried out in the electronic databases of the United European Gastroenterology Week (UEG), American College of Gastroenterology (ACG), International Conference on Nutrition and Food (ICNF). For the final analysis, publications were selected that used validated tests for the assessment of SIBO (hydrogen breath test using glucose or lactulose) with detailed descriptive statistics, allowing the resulting data to be included in the meta-analysis.ResultsThe final analysis included 7 studies with 1248 patients with FD. Overall pooled prevalence of SIBO in patients with FD was 34.73% (95% CI 24.80745.383). There was significant heterogeneity between the results (p0.0001; I2=89.91%). When excluded from the meta-analysis of a study in which the incidence of SIBO was studied in patients with refractory FD, the pooled prevalence was 38.98% (95% CI 28.96449.490).ConclusionThis meta-analysis has demonstrated that SIBO is often associated with FD and is observed in about every third patient with this functional gastrointestinal tract disease.

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