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During the congress, E-Posters will be accessible to all participants on the congress website 24/7, as well as in the E-poster stations in the congress center.
Preparing your E-Poster
Please review the E-Poster format requirements carefully when preparing your E-Poster. Should your E-Poster not meet the mentioned requirements, it may not be displayed as described above.
E-Poster Submission Deadline
Please prepare and upload your E-Poster no later than March 14, 2026 11.59PM CET. After this date, you will no longer be able to prepare and upload your E-poster and it will not be displayed and accessible on the congress website.
Please follow the instructions below to input your abstract title.
Abstract titles should be brief and reflect the content of the abstract.
Bowel dysfunction, including constipation and diarrhea, is highly prevalent among patients undergoing hemodialysis, significantly impairing their quality of life. Contributing factors may include uremic toxins, autonomic neuropathy, restrictions on fluid and dietary fiber intake, reduced physical activity, intradialytic ultrafiltration, intestinal hypoperfusion, and medication use. However, few studies have examined the factors associated with bowel dysfunction in this population.
We analyzed baseline data from a prospective cohort of 2,208 patients undergoing maintenance hemodialysis. Data on the Bristol Stool Form Scale (BSFS), bowel movement frequency (times per week), constipation severity (score 0–4), and laxative use were collected. Among them, 2,139 patients with available BSFS data were included in the analyses. Ordinal logistic regression was employed to identify factors associated with BSFS scores. Multinomial logistic regression was also performed to identify factors associated with hard stools (BSFS 1–3) and loose stools (BSFS 5–7), using normal stools (BSFS 4) as the reference category.
The mean BSFS score was 3.8 ± 1.2, and the average bowel movement frequency was 7.1 ± 4.5 per week. Overall, 38% of patients reported constipation, and 29% used laxatives. Lower BSFS scores (indicating harder stools) were associated with fewer bowel movements, more frequent subjective constipation, and less frequent laxative use. In ordinal logistic regression analysis, lower BSFS scores were independently associated with higher serum albumin levels, use of calcium channel blockers (CCBs), use of glucagon–like peptide–1 (GLP–1) receptor agonists, and absence of laxative use. Similar results were observed in multinomial logistic regression analysis.
Among patients undergoing hemodialysis, the use of CCBs and GLP–1 receptor agonists was independently associated with harder stools, suggesting that these medications may contribute to constipation in this population.
