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Comparative Study
Controlled Clinical Trial
Journal Article
Research Support, Non-U.S. Gov't
Durability of iliac artery preservation associated with endovascular repair of infrarenal aortoiliac aneurysms.
Journal of Vascular Surgery 2017 October
OBJECTIVE: This study evaluated and compared the long-term clinical outcomes of endovascular repair of infrarenal aortoiliac aneurysms (EVAR) vs EVAR with preservation of antegrade internal iliac artery (IIA) perfusion using iliac branched devices (EVAR-IBDs).
METHODS: From October 1998 to August 2015, patients with infrarenal aortoiliac aneurysmal (AIA) disease at high risk for conventional open surgery were enrolled in a prospective physician-sponsored investigational device exemption trial. Clinical data of 75 patients treated with EVAR-IBD and 255 with standard EVAR were analyzed. Technical success, perioperative outcomes, mortality, device patency, endoleak rates, and reinterventions during a follow-up of 10 years were analyzed.
RESULTS: There were 87 IBDs deployed in 75 patients. Technical success rate was 97%. Mortality at 30 days was 1.3%. Freedom from aneurysm-related mortality at 3, 5, and 10 years was 99%. Freedom from a type I or III endoleak at 3, 5, and 10 years was 99%. Freedom from secondary reinterventions at 3, 5, and 10 years was 86%, 81%, and 81%, respectively. Primary patency of the IBDs at 3, 5, and 10 years was 94%, 94%, and 77%, respectively. Twenty-four percent of patients underwent EVAR for concomitant AIA disease (EVAR-AIA), and 78% were managed by staged IIA embolization before EVAR. No statistically significant difference in freedom from aneurysm-related mortality, limb occlusions, or endoleak rates was identified in patients with EVAR-AIA vs EVAR-IBD (P > .05). There were significantly more secondary reinterventions in the EVAR-AIA group compared with the EVAR-IBD group (hazard ratio, 0.476, 95% confidence interval, 0.226-1.001; P = .045).
CONCLUSIONS: EVAR of infrarenal AIAs with preservation of antegrade flow to the IIA using IBDs is feasible with long-term sustained durability. Serious considerations should be given to the use of IBDs in patients with infrarenal AIAs meeting appropriate anatomic criteria.
METHODS: From October 1998 to August 2015, patients with infrarenal aortoiliac aneurysmal (AIA) disease at high risk for conventional open surgery were enrolled in a prospective physician-sponsored investigational device exemption trial. Clinical data of 75 patients treated with EVAR-IBD and 255 with standard EVAR were analyzed. Technical success, perioperative outcomes, mortality, device patency, endoleak rates, and reinterventions during a follow-up of 10 years were analyzed.
RESULTS: There were 87 IBDs deployed in 75 patients. Technical success rate was 97%. Mortality at 30 days was 1.3%. Freedom from aneurysm-related mortality at 3, 5, and 10 years was 99%. Freedom from a type I or III endoleak at 3, 5, and 10 years was 99%. Freedom from secondary reinterventions at 3, 5, and 10 years was 86%, 81%, and 81%, respectively. Primary patency of the IBDs at 3, 5, and 10 years was 94%, 94%, and 77%, respectively. Twenty-four percent of patients underwent EVAR for concomitant AIA disease (EVAR-AIA), and 78% were managed by staged IIA embolization before EVAR. No statistically significant difference in freedom from aneurysm-related mortality, limb occlusions, or endoleak rates was identified in patients with EVAR-AIA vs EVAR-IBD (P > .05). There were significantly more secondary reinterventions in the EVAR-AIA group compared with the EVAR-IBD group (hazard ratio, 0.476, 95% confidence interval, 0.226-1.001; P = .045).
CONCLUSIONS: EVAR of infrarenal AIAs with preservation of antegrade flow to the IIA using IBDs is feasible with long-term sustained durability. Serious considerations should be given to the use of IBDs in patients with infrarenal AIAs meeting appropriate anatomic criteria.
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