Prevalência e fatores associados ao supercrescimento bacteriano do intestino delgado em pacientes com doença de Crohn: estudo retrospectivo em um centro de referência

Abstract

Small intestinal bacterial overgrowth (SIBO) appears to be common in patients with Crohn’s disease (CD). The rate of SIBO has been estimated at 15 a 45% in this setting. However, different demographic, socioeconomic, and disease-related factors may exist between South American and North American or European populations that may limit the generalization of these findings, as the data are mainly derived from North American or European studies. We studied the prevalence and predictors of SIBO in CD outpatients. In this retrospective study, between june 2011 and june 2016, the medical records of 110 CD patients were assessed for presence of SIBO using the H2/CH4 glucose breath test. Univariate analysis was performed to investigate the potential association between SIBO and demographic, disease-related data, systemic markers of inflammation (C-reactive protein and erythrocyte sedimentation rate). Our resuls were that SIBO rate was high in CD patients (30%). Patients with and without SIBO were comparable according to demographics, systemic inflammatory biomarkers, and disease characteristics, except to the stricturing phenotype more common in the SIBO-positive CD patients (48.5% vs. 19.5%, p=0.002). From these findings, we conclude that in brazilian CD patients, SIBO is a highly prevalent condition. Stricturing phenotype demonstrated association with SIBO. An individualized screening plan followed by the timely treatment for SIBO should be carried out as part of quality of care improvement in CD individuals.