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Single-center results of the Gore Excluder Conformable Endoprosthesis with active control system in endovascular aneurysm repair.

BACKGROUND: The GORE EXCLUDER Conformable Endoprosthesis with active control (CEXC) was developed to treat challenging aortic neck anatomy. This study investigated the clinical results and changes in endograft (ap)position during follow-up.

METHODS: Patients treated with the CEXC between 2018 and 2022 were included in this prospective single-center study. Computed tomography angiography (CTA) follow-up was grouped into three categories: 0 to 6 (FU1), 7 to 18 (FU2), and 19 to 30 (FU3) months. Clinical end points were endograft-associated complications and reinterventions. CTA analysis included the shortest apposition length (SAL) between the endograft fabric and the first slice where circumferential apposition was lost, shortest fabric distance (SFD) between both renal arteries and the endograft fabric, and maximum infrarenal and suprarenal aortic curvature. FU2 and FU3 were compared with FU1 to establish changes.

RESULTS: Included were 46 patients, of whom 36 (78%) had at least one hostile neck feature and 13 (28%) were treated outside instructions for use. Technical success was 100%. Median CTA follow-up was 10 months (2-20 months); 39 patients had a CTA available at FU1, 22 at FU2, and 12 at FU3. At FU1, the median SAL was 21.4 mm (13.2-27.4 mm), which did not significantly change during follow-up. No type I endoleaks, and one type III endoleak at an IBD occurred during follow-up. Two cases of endograft migration (SFD increase >10 mm) were seen during follow-up (one treated outside the instructions for use). Maximum infrarenal and suprarenal aortic curvature did not significantly change during follow-up.

CONCLUSIONS: The use of the CEXC in challenging aortic necks enables stable apposition without significant changes in aortic morphology at short-term follow-up.

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