Endovascular Therapy for Steno-Occlusive Subclavian and Innominate Artery Disease - Safety and Efficacy at a Single Center With >20 Years' Experience

Background: This study investigated the safety and outcome of endovascular therapy for steno-occlusive subclavian or innominate artery disease at a single center over a long period of more than 2 decades. Methods and Results: We retrospectively analyzed all endovascular procedures of stenosis or occlusion of the subclavian or innominate artery between January 1990 and October 2013. During the observation period, a total of 130 procedures were attempted in 127 mostly symptomatic patients with stenosis (n=108; 83%) or occlusion (n=22; 17%) of the subclavian (n=119; 92%) and innominate (n=11; 8%) artery. The overall technical success rate was 97.7% (n=127/130). Accounting for the type of lesion, the success rate for stenosis was 100% (n=108/108) and for total occlusion, 86% (n=19/22). The periprocedural complication rate was low and included stroke, transient ischemic attack, and access site complications of 0.8%, 1.5%, and 3.8%, respectively. During a mean follow-up of 28 months the rate of restenosis (>70%) was 12%. Due to the overall low event rate no significant lesion or procedural risk factor for the development of restenosis could be identified. Conclusions: Stenosis and occlusion of the subclavian and innominate artery can be treated safely and successfully by endovascular therapy with excellent long-term patency.