712 Outcomes of Infrainguinal Stents in Peripheral Arterial Disease

Background Endovascular therapy is an established treatment for peripheral arterial disease. In aortoiliac disease, above the inguinal ligament, percutaneous transluminal angioplasty (PTA) + stent results in good long-term patency rates[1]. In comparison, long-term patency rates of PTA + stent in femoropopliteal disease, below the inguinal ligament are inferior, despite advancements in stent technology[2]. Multi-level disease is more common, lesions are often longer in length and rates of re-stenosis remain high. There is a paucity of data of long-term outcomes in infrainguinal stents and therefore debate to what the optimal treatment strategy should be[3]. Method 5-year retrospective analysis of 59 patients between 2014 and 2019 in a UK regional vascular centre. Patients with Rutherford Score 3 - 6 were treated by Vascular Surgeons and Interventional Radiologists with PTA + stent. Outcomes included patency at 6, 12, 24, 36 months, need for revascularisation/reintervention, major amputation, and death. Results 12% of stents occluded at 30 days and 39% of stents occluded at 12 months. 34% patients required further intervention (PTA, femoropopliteal bypass, amputation) and 7 out of 59 (12%) target limbs were amputated. Conclusions Whilst PTA + stent demonstrates an effective intervention for a selection of patients, it is evident that further work is required in order to identify the best treatment strategy and most clinically useful outcome measure.