Single-Center Experience with the Femoral-to-Brachial Preloaded Delivery System for Fenestrated-Branched Endovascular Repair of Complex Aortic Aneurysms

Abstract

To assess technical aspects and outcomes of fenestrated-branched endovascular aortic repair (FB-EVAR) using a femoral-to-brachial (FTB) preloaded delivery system (PDS) with two separate configurations. Clinical data of all consecutive patients enrolled in a prospective study to evaluate FB-EVAR for complex abdominal and thoracoabdominal aortic aneurysms (CAAAs & TAAA) between 2013 and 2020 were reviewed. Patients treated with FTB-PDS were included. The two configurations included 4 trans-brachial preloaded wires (4BR) or 2 trans-brachial and 2 transfemoral preloaded wires (2BR-2FE). Outcome measures included technical success, procedural metrics, 30-day or in-hospital mortality, major adverse events (MAEs), and target-vessel outcomes. There were 115 patients with a mean age of 73.8 ± 8years, treated with FTB-PDS. Of these, 62 patients (54%) had 4BR and 53 patients (46%) had 2BR-2FE FTB-PDS. There were 106 TAAA (92%) and 9 CAAAs (8%). Technical success, defined as successful implantation of the stent-graft and all intended target-vessel stents without type I or III endoleak, was 97%, with no differences in total operating time, endovascular time, and radiation dose between groups. There were 3 deaths (3%) at 30days. MAEs were noticed in 21 patients (18%) with no difference between groups, including new-onset dialysis (2% vs. 4%, P = 0.59), and paraplegia (7% vs. 11%, P = 0.51), for 4BR and 2BR-2FE, respectively. Patient survival and freedom from aortic-related mortality at 2-years were 79 ± 5% and 97 ± 1.7%, respectively, with no difference between groups. The use of FTB-PDS for FB-EVAR is safe with high technical success and a reasonable rate of MAEs. Each configuration provides specific benefits based on patient anatomy, while having similar procedural metrics and clinical outcomes.