title: Self-expanding nitinol stents in the femoropopliteal segment: technique and mid-term results.
abstract: The purpose of this study was to evaluate the safety and efficacy of self-expanding SMART nitinol stents in patients with chronic limb ischemia (CLI) demonstrating Type B or C TransAtlantic Inter-Society Consensus (TASC) lesions in the femoropopliteal (FP) arterial segment. There were 137 lower limbs in 122 patients with chronic limb ischemia, secondary to TASC A (n = 12) or TASC B,C (n = 125) lesions in the FP artery were treated with Cordis SMART self-expanding nitinol stents. Hemodynamic stent failure occurred with the presence of a greater than 50% stenosis within the stented segment, measured by standard Duplex velocity criteria, obtained at various postintervention intervals. The hemodynamic primary stent patency was calculated by life-table methods from the time of intervention, uninterrupted by hemodynamic stent failure. The mean lesion length was 12.2 cm (range, 4 to 28 cm). The technical success was 98%. Within the follow-up period (mean, 302 days), 24 limbs were diagnosed with hemodynamic stent failure. The hemodynamic primary stent patency rates were 92%, 76%, 66%, and 60% at 6, 12, 18, and 24-months, respectively. These data provide objective evidence that endovascular treatment of FP TASC A, B and C lesions using self-expanding nitinol SMART stents in patients with chronic limb ischemia provides favorable safety and durability outcomes. Further investigation is warranted.
authors.affiliation: Vascular Interventionalist, Director, St. Lukes Vascular Center, Aurora Healthcare, Milwaukee, WI, USA.
authors.forename: Mark W
authors.initials: MW
authors.lastname: Mewissen
mesh_terms: D000368:Aged; D000497:Alloys; D000800:Angioplasty, Balloon / Q000379:methods; D002406:Catheterization, Peripheral / Q000379:methods; D002908:Chronic Disease; D005260:Female; D005263:Femoral Artery / Q000000981:diagnostic imaging; D006801:Humans; D007511:Ischemia / Q000000981:diagnostic imaging / Q000628:therapy; D007866:Leg / Q000098:blood supply*; D008297:Male; D011150:Popliteal Artery / Q000000981:diagnostic imaging; D015641:Radiography, Interventional / Q000379:methods; D015607:Stents; D017211:Treatment Failure; D014654:Vascular Patency
chemical_list: D000497:Alloys; C013616:nitinol