Midterm outcomes of the Viabahn VBX balloon-expandable covered stent for fenestrations during complex endovascular aortic aneurysm repair

被引:0
作者
Pavarino, Felipe L. [1 ]
V. Figueroa, Andres [1 ]
Tanenbaum, Mira T. [1 ]
Pizano, Alejandro [1 ]
Porras-Colon, Jesus [1 ]
Baig, Mirza S. [1 ]
Kirkwood, Melissa [1 ]
Timaran, Carlos H. [1 ]
机构
[1] Univ Texas Southwestern Med Ctr, Dept Surg, Div Vasc & Endovasc Surg, 5959 Harry Hines Blvd,POB 1,Ste 620, Dallas, TX 75390 USA
关键词
Viabahn VBX; iCast; FEVAR; Fenestration; Thoracoabdominal aneurysm; Covered balloon expandable stent; BRIDGING STENTS; ATRIUM ICAST; PERFORMANCE; ENDOGRAFTS; INSTABILITY; BRANCHES; GRAFTS;
D O I
10.1016/j.jvs.2024.08.063
中图分类号
R61 [外科手术学];
学科分类号
摘要
Objectives: The optimal bridging stent for fenestrations during complex endovascular aortic aneurysm repair (EVAR) has not been defined. At our institution, the Viabahn VBX is frequently used given its availability and mechanical and heparin- bonding characteristics. This study aimed to assess the performance of the Viabahn VBX vs the iCast balloon-expandable covered stents as bridging stents for fenestrations during complex EVAR. Methods: A retrospective study of consecutive patients undergoing complex EVAR between 2015 and 2021 was performed. Celiac arteries (CAs), superior mesenteric arteries (SMAs), left renal arteries, and right renal arteries stented with fenestrations were grouped according to the type of bridging stent, VBX vs iCast. Target vessels (TV) stented with a branch or scallop were excluded. The primary end points included primary patency and freedom from TV instability. Results: A total of 292 patients undergoing complex EVAR were treated using VBX or iCast with a mean follow-up of 190 days (interquartile range, 36-384 days) for the VBX cohort and 804 days (interquartile range, 384-1507 days) for the iCast cohort. A total of 677 TVs were stented, including 134 CAs (20%), 175 SMAs (26%), 182 left RAs (27%), 186 right RAs (27%), and 12 additional vessels (2%). Proximal reinforcement was more frequent with VBX than with iCast stent (23% vs 2.4%; P < . 0001). There was no difference in primary patency rates at 2 years between VBX and iCast stent for CA (100% vs 96.4%; P = .32), SMA (97.8% vs 100%; P = .14), and the RAs (96.7% vs 99.4%; P = .11). There was no difference between VBX and iCast in the cumulative incidence of type Ic and type IIIc endoleaks (3.2% vs 5.6%; P = .69) or freedom from TV instability at 2 years. Conclusions: Viabahn VBX stents are a safe and effective option as bridging stents in fenestrations during complex EVAR with comparable midterm outcomes to iCast stents. However, proximal stent reinforcement may be required with VBX stent to ensure adequate sealing at the fenestrations. Longer follow-ups and larger series are required to assess long-term outcomes and durability.
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页码:38 / 45
页数:8
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