529 Institutional Experience of Patients with Complex Abdominal Aorta Aneurysms Undergoing Fenestrated Endovascular Repair: A Retrospective, Single-Centre Study

Abstract

Abstract Aim To determine the short- and long-term outcomes of patients with complex abdominal aorta aneurysms (CAAAs) managed with fenestrated endovascular aneurysm repair (fEVAR) at a tertiary vascular unit. Method All patients undergoing fEVAR for elective CAAA between January 2013 and December 2021 were retrospectively identified. Primary outcomes were mortality rate and stent patency (assessed by CT imaging). Secondary outcomes included rates of reintervention. Follow-up intervals were at 30 days, 1 year, 3 years and 5 years. Descriptive statistics are reported. Results 61 patients were identified; 5 were excluded due to follow-up in a different health board. Of the 56 analysed, 49 (88%) were male and median age was 75 (IQR 68-83). The average number of fenestrations used per fEVAR graft was 3 (range 2-6). Mortality rate was 2% at 30-day, 9% at 1-year and 25% at 5-year. At 5-year follow-up, all patients (n = 11) had grafts with all fenestrations patents. There was an 11% (n = 6) reintervention rate in a 5-year period. Median time to reintervention was 12 months (range 5-36 months). Reintervention included 4 requiring embolization for a Type II endoleak, 1 patient required an iliac stent extension, and 1 patient required a renal stent. Conclusions With fEVAR being a relatively newly adopted technique, this data demonstrates technical success with low re-intervention rates when used for CAAAs. Future work should include organising a multi-centre study to gain a larger sample size to compare rates of fEVAR success in different centres.