title: Acute and long-term outcomes of the novel side access (SLK-View) stent for bifurcation coronary lesions: a multicenter nonrandomized feasibility study.
abstract: OBJECTIVE
  To evaluate technical feasibility and procedural safety of SLK-View stent for treating bifurcation lesions.
  
  
  BACKGROUND
  Percutaneous treatment of coronary bifurcation lesions represents a technical challenge. Several stenting techniques and dedicated devices have proven unsuccessful, with high rates of side branch occlusion at index procedure and follow-up.
  
  
  METHODS
  Eighty one patients with 84 de novo coronary artery lesions involving a major side branch underwent SLK-View (Advanced Stent Technologies, Inc., Pleasanton, CA) stent implantation with subsequent kissing balloon post dilatation. SLK-View stent is a new scaffolding device incorporating a side aperture that allows access to the side-branch of a bifurcation after deployment of the stent in main vessel. All patients underwent angiographic follow-up at 6 months. Procedural, in-hospital, and 6-month follow-up outcomes were examined.
  
  
  RESULTS
  The lesions were located in left main (n = 11), left anterior descending (n = 50), left circumflex (n = 8), right coronary artery (n = 7), and 1 ramus intermedius. The most frequent lesions (44.1%) were true bifurcations. Successful stent delivery to bifurcation was accomplished in 82/84 of the cases (97.6%). Technical success was obtained in 99 and 94% of main vessel and side branches, respectively. Stenting in side-branch was performed in 21 lesions (25%). Side-branches were accessed effectively in 100% of bifurcations postprocedurally. Binary restenosis rate at 6-month follow-up was 28.3% and 37.7% for main vessel and side-branch, respectively. TLR rate at 6-month follow-up was 21% and CABG rate of 6%.
  
  
  CONCLUSIONS
  In this consecutive multicenter series of patients with coronary bifurcation lesions, this novel side-branch access stent proved feasible, with a high procedural success rate, while maintaining side-branch access.
authors.affiliation: Division of Cardiovascular Medicine, Stanford University School of Medicine, Stanford, CA 94304, USA.
authors.forename: Fumiaki
authors.initials: F
authors.lastname: Ikeno
authors.forename: Young-Hak
authors.initials: YH
authors.lastname: Kim
authors.forename: Jorge
authors.initials: J
authors.lastname: Luna
authors.forename: Jose A
authors.initials: JA
authors.lastname: Condado
authors.forename: Antonio
authors.initials: A
authors.lastname: Colombo
authors.forename: Eberhard
authors.initials: E
authors.lastname: Grube
authors.forename: Peter J
authors.initials: PJ
authors.lastname: Fitzgerald
authors.forename: Seung-Jung
authors.initials: SJ
authors.lastname: Park
authors.forename: Alan C
authors.initials: AC
authors.lastname: Yeung
mesh_terms: D000800:Angioplasty, Balloon / Q000295:instrumentation*; D019917:Blood Vessel Prosthesis Implantation / Q000295:instrumentation*; D017023:Coronary Angiography; D023921:Coronary Stenosis / Q000000981:diagnostic imaging / Q000628:therapy*; D004869:Equipment Safety; D005240:Feasibility Studies; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015607:Stents; D016896:Treatment Outcome; D018084:Ultrasonography, Interventional