title: Angiographic and clinical outcomes of a pharmacokinetic study of sirolimus-eluting stents: lesson from restenosis cases.
abstract: BACKGROUND
  A pharmacokinetic (PK) study was conducted to evaluate sirolimus-eluting stents (SES) in Japanese people, representing the first clinical trial of the use of drug-eluting stents in Japan.
  
  
  RESULTS
  The PK study was conducted in 20 patients with 30 lesions treated with sirolimus-coated BX Velocity stents. All lesions were treated with a single SES (3 x 18 mm). Angiographic follow-up was performed at 8 months after SES implantation, and the clinical outcomes were evaluated at 1 year in all cases. All procedures were successful, and all patients were discharged without any adverse cardiac events. The total restenosis rate was 10% (3 lesions) and target vessel revascularization was performed in those 3 cases (15%). Restenoses occurred at the proximal and distal stent margins. Intravascular ultrasound examination of restenosis cases revealed abundant plaque burden at the stent edges even though the luminal area was preserved.
  
  
  CONCLUSIONS
  The sirolimus-eluting BX Velocity stent is safe and useful for Japanese patients with coronary artery disease. However, restenosis at proximal stent edge seems to be a problem.
authors.affiliation: Division of Cardiovascular Medicine, Toho University Ohashi Medical Center, Japan. masato@oha.toho-u.ac.jp
authors.forename: Masato
authors.initials: M
authors.lastname: Nakamura
authors.forename: Masamichi
authors.initials: M
authors.lastname: Wada
authors.forename: Hisao
authors.initials: H
authors.lastname: Hara
authors.forename: Ken
authors.initials: K
authors.lastname: Kozuma
authors.forename: Yoritaka
authors.initials: Y
authors.lastname: Otsuka
authors.forename: Shunichi
authors.initials: S
authors.lastname: Miyazaki
mesh_terms: D000368:Aged; D017023:Coronary Angiography / Q000379:methods; D003327:Coronary Disease / Q000150:complications / Q000000981:diagnostic imaging / Q000628:therapy*; D023903:Coronary Restenosis / Q000000981:diagnostic imaging / Q000209:etiology; D006801:Humans; D007166:Immunosuppressive Agents / Q000493:pharmacokinetics*; D007564:Japan; D008875:Middle Aged; D020123:Sirolimus / Q000493:pharmacokinetics*; D015607:Stents
chemical_list: D007166:Immunosuppressive Agents; D020123:Sirolimus