AAN 7. Internal Iliac Artery Flow Preservation With Iliac Branch Device During Endovascular Repair of Aortoiliac Aneurysms: Single Center Experience

Abstract

Iliac branch devices (IBDs) have become a popular option to preserve internal iliac artery (IIA) flow in patients with ectatic or aneurysmal common iliac arteries during endovascular aneurysm repair. This study aimed to assess the outcomes with the use of this device in a single-center setting. All patients undergoing implantation of a Cook Zenith IBD (Cook Medical, Bloomington, Ind) between January 2010 and May 2018 in our center were included. The IBD was indicated in physically active, anatomically suitable patients with unilateral or bilateral common iliac artery aneurysms with or without aortic aneurysm. Data were collected prospectively. In the study period, 137 IBDs were implanted in 104 patients (133 men; mean age, 67.4 ± 9 years); 33 (32%) patients had a bilateral IBD, 77 (74%) had a simultaneous or previous endovascular repair, and the remaining 27 (26%) had a simultaneous or previous complex endovascular repair. Technical success was 96.4% (132/137), with no early mortality. An upper access was used in 41 (30%) procedures. Twenty (14.6%) patients had a contralateral IIA embolization. Six (4.4%) IIA branches occluded during a mean follow-up of 19 months (one bilateral occlusion and four unilateral). Estimated IIA branch patency at 1 year and 3 years was 97.6% ± 1.8% and 88.8% ± 4.7%, respectively. Of the 10 patients with occluded IIA (5 technical failures and 5 patients with IBD occlusion), 2 suffered persistent buttock claudication. The IBD is a safe and effective technique to preserve IIA flow in patients with challenging distal anatomy and is associated with high technical success and midterm patency.