74 | wetenschapsdag 2023 Sessie 2c: Laat Me, opereren! 4 Auteurs K.O. Kappe, S.E.M. van Knippenberg, B.L. Tran, R.J. Lely, B.B. van der Meijs, J.D. Blankensteijn, R. Balm, J.H. Nederhoed, V. Jongkind, A.W.J. Hoksbergen, K.K. Yeung Abstract titel Outcomes of the Viabahn Balloon-Expandable Endoprosthesis as Bridging Stent-Graft for Fenestrated- and Branched Endovascular Aortic Repair Background Bridging stent-grafts implanted during fenestrated and branched endovascular aortic repair (F/B-EVAR) are crucial for the successful exclusion of the aortic aneurysm. The aim of this study was to analyze the outcomes of the Gore Viabahn VBX stentgraft as bridging stent for renal and visceral target vessels during F/B-EVAR. Methods We collected data of all consecutive patients undergoing F/B-EVAR that were treated with at least one VBX stent-graft as a bridging stent in the Amsterdam University Medical Centers from January 2019 to May 2023. Patients were treated for thoraco-abdominal or complex abdominal aortic aneurysms. The procedural, radiological and follow-up data of the included patients were retrospectively reviewed. Primary outcome of the study was technical success for VBX stent-graft implantation, defined as successful catheterization, placement and deployment of the VBX stent-graft in the intended target vessels. Furthermore, VBX-related endoleaks, stenoses and occlusions during follow-up were reported. Results A total of 274 VBX stent-grafts were implanted for 263 target vessels in 38 FEVAR, 46 BEVAR and 3 F/B-EVAR (combined design) stent-grafts in 87 patients (75% male; mean age, 73 ± 7 years). Technical success of VBX stent-graft implantation was 97.5% (273 out of 280 implantation attempts). Post-operative radiological evaluation of 239 VBX stent-grafts was available for analysis. The patency of the VBX stent-grafts was 98.3% (235/239) after a median follow-up of 12 months. During follow-up, VBXrelated adverse events that required re-intervention occurred in 2.9% (7/239): two type 1c endoleaks, two type 3c endoleaks, two in-stent stenoses and one occlusion. Conclusion VBX stent-graft implantation as a bridging stent during F/ BEVAR has a high technical success and show excellent patency as bridging stent-grafts in F/BEVAR with a low number of complications requiring re-intervention. Long term follow-up data are awaited.
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