This study explains the Outcomes after open repair of thoracoabdominal aortic aneurysms (TAAAs) have been definitively demonstrated to worsen as TAAA extent increases. However, the effect of TAAA extent on fenestrated-branched endovascular aneurysm repair (F/B-EVAR) outcomes is unclear. We sought to investigate differences in outcomes of F/B-EVAR based on TAAA extent. We reviewed a single-institution, prospectively maintained database of all F/B-EVAR procedures performed in an Institutional Review Board-approved registry or physician-sponsored Food and Drug Administration investigational device exemption trial. Patients were stratified into two groups: extensive (extent I-III TAAA) and nonextensive (juxtarenal, pararenal, and extent IV TAAA). Perioperative outcomes were compared with χ2 test. Kaplan-Meier analysis of 3-year survival, target artery patency, reintervention, type I or type III endoleak, and branch instability (type IC or type III endoleak, loss of branch patency, or target vessel stenosis >50%) was performed. Cox proportional hazards modeling was used to assess the independent effect of extensive TAAAs on 1-year mortality.

Reference link-