ReviewHemodialysis international. International Symposium on Home Hemodialysis2026
Small Bowel Lesions and Bleeding Risk in Hemodialysis Patients: A Narrative Review.
Review in Hemodialysis international. International Symposium on Home Hemodialysis, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.
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Abstract
backgroundGastrointestinal bleeding is very common among hemodialysis patients. This high bleeding risk is caused by uremic platelet dysfunction, vascular fragility, intradialytic hemodynamic instability, and widespread antithrombotic therapy. Small bowel lesions, especially angiodysplasias, constitute a significant but often overlooked source of recurrent or occult hemorrhage while conventional endoscopy frequently fails to identify these lesions.
objectivesInvestigation of small bowel lesions in hemodialysis patients and identification of bleeding risk of this vulnerable population.
designNarrative review.
methodsEnglish language studies in the last 25 years using PubMed and Google Scholar databases up to November 2025. Search terms included "hemodialysis," "small bowel lesions," "angiodysplasia," and "gastrointestinal bleeding." The review incorporates different types of research including observational cohorts, randomized trials, cross-sectional studies, systematic reviews, and narrative reviews involving hemodialysis adult or end stage renal disease populations.
resultsAcross the analysis of 26 studies, capsule endoscopy revealed a significantly higher prevalence of small bowel lesions in hemodialysis patients compared to controls, with angiodysplasias being the most frequent finding. Large-scale epidemiological analyses identified hemodialysis as an independent risk factor for gastrointestinal hemorrhage compared to peritoneal dialysis, providing the clinical background for the increased susceptibility of these patients to small bowel-specific lesions. Overall, patients have a higher risk of rebleeding tendency than controls and exhibited a high-risk phenotype characterized by recurrent angiodysplasia-related bleeding and elevated one-year mortality rates following the first bleeding episode.
conclusionSmall bowel lesions may constitute a major and underrecognized cause of gastrointestinal bleeding in hemodialysis patients. Capsule endoscopy offers the highest diagnostic yield, yet optimal treatment strategies remain undefined, and recurrent bleeding episodes are common. Thus, effective management requires early detection, individualized therapeutic planning, and careful treatment with anticoagulant and antiplatelet drugs.
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