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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.
With the widespread use of endovascular therapy, the long-term patency of arteriovenous grafts (AVGs) for hemodialysis has improved. However, pseudoaneurysm formation due to repeated puncture has emerged as an important structural complication. An increasing number of surgical repairs for graft pseudoaneurysms have been observed at our institution, prompting an investigation into the contributing factors to improve graft selection and management.
This study consisted of two retrospective analyses.
Study 1: Twenty-two patients (26 procedures) who underwent surgical repair of AVG pseudoaneurysms between January 2020 and October 2023 were analyzed regarding clinical characteristics, graft type, and time to aneurysm formation.
Study 2: Seventy-eight loop-type AVG cases created between 2015 and 2018 were followed for ≥3 months, and pseudoaneurysm-free survival was compared among graft materials.
The median time from AVG creation to repair was 70 months (range, 44–158), and most cases showed aneurysms at both puncture sites. Although no difference was found in graft diameter, polyurethane (PU) grafts required significantly earlier repair than ePTFE grafts (median 51 vs. 96 months, p<0.05). In the cohort study, pseudoaneurysm formation occurred in 11% during 46 months of follow-up, with a trend toward earlier occurrence in PU grafts.
PU grafts enable early cannulation through self-sealing properties but may be prone to structural degradation over time, while ePTFE grafts benefit from connective tissue reinforcement. Understanding these structural differences is essential for individualized material selection and puncture management. Designing vascular access that facilitates surgical revision after long-term use may further enhance AVG longevity in the era of prolonged dialysis therapy.
