Geometrical comparison of a dedicated flaring bridging stent compared with an all-rounder product in fenestrated endovascular aneurysm repair

BACKGROUND: The aim of this study is to compare early target vessel (TV) outcomes, procedural efficiency, and postoperative geometrical configuration of a dedicated flaring bridging stent graft with an established balloon-expandable covered stent graft in patients undergoing FEVAR or F/BEVAR. METHODS: This retrospective comparative cohort study included consecutive patients with FEVAR or F/BEVAR between September 2018 and February 2026. TVs treated with BeFlared were compared with TVs treated with BeGraft Peripheral. Primary endpoints were technical success and geometrical layout analysis. RESULTS: The study cohort comprised 225 patients and 831 TVs, including 159 treated with BeFlared and 672 treated with BeGraft Peripheral. Target-vessel distribution was comparable between groups. Technical success was 99.4% for BeFlared and 97.9% for BeGraft Peripheral (P=0.33). Thirty-day TVI occurred in 0.6% versus 2.1%, respectively (P=0.33). BeFlared was associated with shorter bridging stenting time (5.1 [4.3-6.2] vs. 7.5 [4.9-9.6] minutes; P