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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.
Peritoneal dialysis (PD)-associated peritonitis is a serious complication of PD and its prevention is important in reducing patient morbidity and mortality. Although International Society for Peritoneal Dialysis (ISPD) guideline recommends antibiotic prophylaxis prior to colonoscopy to prevent PD-associated peritonitis, optimal antibiotic regimen and route of administration have not been determined. This study aimed to investigate the actual use of antibiotic prophylaxis prior to colonoscopy in PD patients in Japan and to elucidate the optimal antibiotic prophylactic regimen and route of administration for preventing colonoscopy- associated peritonitis.
In this retrospective, multicenter observational cohort study, we investigated the incidence of colonoscopy-associated peritonitis at 14 hospitals in Japan between 2018 and 2024. Peritonitis developing within one week after colonoscopy was defined as colonoscopy-associated peritonitis. Patients with pre-existing peritonitis were excluded from the study.
A total of 626 colonoscopies were performed in 398 PD patients. Antibiotic prophylaxis was used in 360 (57.5%) procedures and PD fluid was drained before 618 colonoscopy procedures (98.7%). Of the 360 cases receiving prophylactic antibiotics, 179 received them intravenously and 181 orally. Prophylactic antimicrobial regimens were used in various forms; 64% were single-agent therapies, while the rest were combinations of multiple agents. There were five episodes of peritonitis within 1 week after colonoscopy (0.8%). Two of the five episodes had received intravenous cephalosporins prophylactically, and three of the five episodes occurred without antibiotic prophylaxis. There were no episodes of peritonitis following oral antibiotic prophylaxis. Although there was no statistically significant difference, the incidence rate of peritonitis was 1.13% without antibiotics and 0.56% with antibiotics, both of which were lower than the previously reported rates of 4–12% with prophylaxis and 0–12% without prophylaxis. The causative pathogens of peritonitis were Escherichia coli in two cases, MRSA in one case, and two culture-negative cases. All episodes of colonoscopy-associated peritonitis showed clinical improvement with antibiotic treatment.
The incidence of colonoscopy-associated peritonitis in Japan was low; notably, oral antibiotic prophylaxis appeared to be effective.
