Transfemoral Access to Implant Iliac Branch Devices After Previous Aortic Grafts.

OBJECTIVE: To report on the outcomes of patients undergoing an iliac branch device implantation after previous open or endovascular aorto-biliac repair, using exclusively femoral access for catheterization and delivery of the covering stent to the hypogastric artery.

METHODS: Single-center retrospective study in which all patients in whom an iliac branch device was implanted after previous open or endovascular aorto-biliac repair were identified. Patients in whom the hypogastric artery catheterization and delivery of the bridging cover stent were achieved via exclusive femoral access were included. Different techniques were used based on surgeon preference. Technical success and access-related complications, as well as iliac branch device endoleak or occlusions during follow-up, were evaluated.

RESULTS: From 2015 to 2021, 28 patients with a prior open or endovascular aorto-biliac repair underwent 34 iliac branch device implantations. Most (71%) had juxtarenal or thoracoabdominal aortic aneurysms, 82% had common iliac artery aneurysms, and 25% had hypogastric artery aneurysms. Bilateral iliac branch device implantations were performed in 21% of the patients, and in 26% of cases, landing in the superior gluteal artery was obtained. An "up-and-over" technique from the contralateral groin was used in 65% of the cases, and a steerable sheath in 35%. Technical success was 94%, with no complications related to access or technique to catheterize and deliver the stents in the hypogastric artery. The cohort had 20% of major complications, with 3 perioperative deaths. Kaplan-Meier estimated an iliac branch device freedom from occlusion and endoleak was 92% and 83% at 2 years.

CONCLUSIONS: The implantation of an iliac branch device over previous aortic or open endografts involving the aortic bifurcation is feasible and safe. We suggest using a femoral approach as the primary access of choice.

CLINICAL IMPACT: In this study we present 28 patients with previous aortoiliac grafts in which iliac branch devices were performed as a subsequent step.We demonstrated the feasibility of the technique despite the difficulty of crossing a neobifurcation, with a steep angle, without complications associated with the technique. Based on our experience, we recommend transfemoral access as the first option for bypassing the hypogastric artery stent, preserving upper extremity access and its possible complications.