title: Retrospective multicentre analysis of S.M.A.R.T. vs. Luminexx nitinol stent implantation for superficial femoral artery lesions (REAL SL) Registry. 5 years' experience.
abstract: BACKGROUND
  The nitinol stent has proven superior primary patency than balloon angioplasty in superficial femoral artery (SFA) lesions, but a systematic comparison of the patency of 2 different nitinol stents (S.M.A.R.T. and Luminexx) in patients with SFA lesions has not been done.
  
  
  RESULTS
  A multicenter, prospective database that included 511 consecutive patients who had undergone endovascular therapy with nitinol stenting for 638 limbs (S.M.A.R.T.: n=503; Luminexx: n=135) was retrospectively analyzed. Patency was assessed by duplex ultrasound. Outcomes were compared between the groups by the Kaplan-Meier and log-rank methods. To minimize the differences between each group, propensity-matched analysis was also performed. Stent fracture occurred in 11% (57/503) of the S.M.A.R.T. and 23% (31/135) of the Luminexx stents (P=0.0005). Despite a higher prevalence of chronic total occlusion (55% vs. 40%, P=0.002) and longer lesions (154±93mm vs. 135±71mm, P=0.03) in the S.M.A.R.T. group, there was no significant difference in patency for up to 5 years (P=0.50). When 119 lesions per group were assessed after propensity-matched analysis, the 5-year patency rate was 74% for the S.M.A.R.T. and 65% for the Luninexx stent (P=0.10).
  
  
  CONCLUSIONS
  Despite a different stent fracture rate, there was no significant difference in terms of patency between the S.M.A.R.T. and Luninexx stents for up to 5 years.
authors.affiliation: Cardiovascular Center, Kansai Rosai Hospital, Amagasaki 660-8511, Japan. iida.osa@gmail.com
authors.forename: Osamu
authors.initials: O
authors.lastname: Iida
authors.forename: Yoshimitsu
authors.initials: Y
authors.lastname: Soga
authors.forename: Keisuke
authors.initials: K
authors.lastname: Hirano
authors.forename: Shin
authors.initials: S
authors.lastname: Okamoto
authors.forename: Tomoharu
authors.initials: T
authors.lastname: Dohi
authors.forename: Masaaki
authors.initials: M
authors.lastname: Uematsu
authors.forename: Hiroyoshi
authors.initials: H
authors.lastname: Yokoi
authors.forename: Masakiyo
authors.initials: M
authors.lastname: Nobuyoshi
authors.forename: Toshiya
authors.initials: T
authors.lastname: Muramatsu
authors.forename: Masashi
authors.initials: M
authors.lastname: Fujita
authors.forename: Shinsuke
authors.initials: S
authors.lastname: Nanto
authors.forename: Seiki
authors.initials: S
authors.lastname: Nagata
mesh_terms: D000497:Alloys; D000800:Angioplasty, Balloon; D001157:Arterial Occlusive Diseases / Q000000981:diagnostic imaging / Q000601:surgery; D004868:Equipment Failure; D005263:Femoral Artery / Q000000981:diagnostic imaging / Q000601:surgery*; D006801:Humans; D023821:Limb Salvage; D015995:Prevalence; D011474:Prosthesis Design; D011859:Radiography; D012008:Recurrence; D012042:Registries; D012189:Retrospective Studies; D015607:Stents / Q000009:adverse effects; D018616:Ultrasonography, Doppler, Duplex; D014654:Vascular Patency
chemical_list: D000497:Alloys; C013616:nitinol