title: Clinical Outcomes of SMART Versus Luminexx Nitinol Stent Implantation for Aortoiliac Artery Disease: A Propensity Score-Matched Multicenter Study.
abstract: BACKGROUND
  Endovascular therapy for aortoiliac (AI) lesions using stents is widely accepted. However, the long-term outcome of 2 different types of nitinol stents for AI lesions is unknown. The aim of this study was to examine the long-term outcome of the SMART and Luminexx nitinol stents for the treatment of de novo AI lesions.
  
  
  METHODS
  This study was a multicenter retrospective analysis of a prospectively maintained database. The study enrolled consecutive patients undergoing primary stenting for de novo AI artery stenosis between January 2005 and December 2009. A total of 1503 lesions in 1229 patients treated with SMART or Luminexx primary stenting were enrolled. The primary end point was primary patency, secondary end points were the primary assisted patency, secondary patency, and major adverse limb events (MALEs), which included major amputation and major reintervention. To minimize the differences between the groups, a propensity score matching analysis was performed, and 284 lesions per group were analyzed to identify outcomes.
  
  
  RESULTS
  After the propensity score matching analysis, the lesion length was 60 ± 37 and 57 ± 31 mm (P = .275), and the reference vessel diameter was 8.2 ± 1.5 and 8.3 ± 1.5 mm (P = .482) in the SMART and Luminexx groups, respectively. The primary patency at 3 years was not significantly different between the groups (83.5% vs 82.2%, P = .842, respectively). The assisted primary patency and secondary patency rates were also not significantly different (91.7% vs 93.2%, P = .340, 99.2% vs 98.8%, P = .922). In addition, the MALE rate was not significantly different between the groups (98.3% vs 97.3%, P = .821).
  
  
  CONCLUSIONS
  The current data suggest that the use of nitinol stents for the AI artery provided good long-term patency and freedom from MALE for 3 years of follow-up, regardless of whether SMART or Luminexx stents were used.
authors.affiliation: Department of Cardiology, Cardiovascular Center, Shin-Koga Hospital, Kurume, Japan yoshiaki0407@yahoo.co.jp.
authors.forename: Yoshiaki
authors.initials: Y
authors.lastname: Shintani
authors.affiliation: Department of Cardiology, Kokura Memorial Hospital, Kitakyusyu, Japan.
authors.forename: Yoshimitsu
authors.initials: Y
authors.lastname: Soga
authors.affiliation: Department of Metabolic Medicine, Osaka University Graduate School of Medicine, Osaka, Japan.
authors.forename: Mitsuyoshi
authors.initials: M
authors.lastname: Takahara
authors.affiliation: Cardiovascular Center, Kansai Rosai Hospital, Amagasaki, Japan.
authors.forename: Osamu
authors.initials: O
authors.lastname: Iida
authors.affiliation: Department of Cardiology, Morinomiya Hospital, Osaka, Japan.
authors.forename: Daizo
authors.initials: D
authors.lastname: Kawasaki
authors.affiliation: Department of Cardiology, Kikuna Memorial Hospital, Yokohama, Japan.
authors.forename: Yasutaka
authors.initials: Y
authors.lastname: Yamauchi
authors.affiliation: Department of Cardiology, Sendai Kosei Hospital, Sendai, Japan.
authors.forename: Kenji
authors.initials: K
authors.lastname: Suzuki
authors.affiliation: Department of Cardiology, Saiseikai Yokohama-city Eastern Hospital, Yokohama, Japan.
authors.forename: Keisuke
authors.initials: K
authors.lastname: Hirano
authors.affiliation: Department of Cardiology, Cardiovascular Center, Shin-Koga Hospital, Kurume, Japan.
authors.forename: Tomohiro
authors.initials: T
authors.lastname: Kawasaki
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D000497:Alloys; D000671:Amputation, Surgical; D001018:Aortic Diseases / Q000175:diagnosis / Q000503:physiopathology / Q000601:surgery*; D001157:Arterial Occlusive Diseases / Q000175:diagnosis / Q000503:physiopathology / Q000628:therapy*; D003251:Constriction, Pathologic; D016208:Databases, Factual; D057510:Endovascular Procedures / Q000009:adverse effects / Q000295:instrumentation*; D005260:Female; D006801:Humans; D007083:Iliac Artery / Q000503:physiopathology; D007564:Japan; D053208:Kaplan-Meier Estimate; D023821:Limb Salvage; D016015:Logistic Models; D008297:Male; D008875:Middle Aged; D057216:Propensity Score; D011474:Prosthesis Design; D012008:Recurrence; D012189:Retrospective Studies; D012307:Risk Factors; D015607:Stents; D013997:Time Factors; D016896:Treatment Outcome; D014654:Vascular Patency
chemical_list: D000497:Alloys; C013616:nitinol
keywords: aortoiliac artery; endovascular therapy; nitinol stent