Single-center Surgical Outcomes of Arteriovenous Fistula Aneurysms in Patients with Chronic Renal Failure

Objective: To evaluate the surgical outcomes of arteriovenous fistula (AVF) aneurysm repair in patients with chronic renal failure (CRF) at a single center.Methods: This retrospective study included 87 patients with CRF and AVF aneurysms treated between January 2012 and January 2023.Data on demographic characteristics, comorbid conditions, aneurysm characteristics, surgical procedures, and postoperative outcomes were collected.The primary endpoints were early (0-48 hours) and late (>48 h) complications, in-hospital mortality, and length of hospital stay. Results:The mean age of the participants was 53.210.1 years, with 60.9% being male.The mean AVF flow rate was 897.6328.9ml/min.True aneurysms constituted 83.9% of the cases, with a mean diameter of 41.93.9 mm.The most common types of AVF aneurysm were radiocephalic (69.0%) and brachiocephalic (25.3%).Surgical indications included hand edema/skin laceration (41.4%), asymptomatic (26.1%), and extremely threatening ischemia (7.2%).No mortality was observed, and the average length of hospital stay was 2.40.9 days.Early complications included hematoma (2.3%) and bleeding (2.3%), whereas late complications included stenosis/thrombosis (4.6%), high-flow (2.3%), arterial steal syndrome (2.3%), and infection (3.4%). Conclusion:Surgical treatment of AVF aneurysms in patients with CRF is effective and safe, with low complication rates and no in-hospital mortality.The most common types of AVF aneurysm were radiocephalic and brachiocephalic.Further multicenter prospective studies are needed to validate these findings and explore their long-term outcomes.