title: [A comparison of clinical and angiographic outcome after implantation of a Wiktor stent in large and small coronary arteries].
abstract: The objective of this study was to investigate the mid term influence of vessel size in clinical and angiographic outcome, after Wiktor stent implantation in arteries larger and smaller than 3 mm.
  
  
  METHODS
  A total of 188 stents were implanted in 167 patients divided in two groups. Group 1: stents implanted in arteries smaller than 3 mm, 40 stents in 38 patients. Group 2: in arteries larger than 3 mm. 148 stents in 129 patients. Clinical follow up and a repeated coronary angiographic study were carried out after six months.
  
  
  RESULTS
  Angiographic success was achieved in 97% and 98% cases, with clinical success in 92% and 95% respectively. Acute occlusion occurred in 2 patients of group 1 (5%), and in four patients in group 2 (2.7%); one patient died and four patients suffered a non-fatal myocardial infarction. During clinical follow up, nine patients presented a major complication, two in group 1 and seven in group 2 (5.5% vs. 5.6%). Asymptomatic survival was 86% and 84% respectively. In angiographic follow up we observed a restenosis rate of 41% of the patients in group 1 and 25% of those in group 2. Immediate gain was similar in both groups, but late loss (1.06 +/- 0.85 vs 0.97 +/- 0.86) and loss rate (0.60 vs 0.46) were greater in group 1.
  
  
  CONCLUSIONS
  The frequency of stent thrombosis as well as the incidence of restenosis were higher in arteries smaller than 3 mm. No differences were observed in the incidence of major ischemic events.
authors.affiliation: Servicio de Hemodinámica y Cardiología Intervencionista, Hospital Universitario de la Princesa, Madrid, España.
authors.forename: J
authors.initials: J
authors.lastname: Carrillo-Calvillo
authors.forename: L
authors.initials: L
authors.lastname: Martínez-Elbal
authors.forename: M
authors.initials: M
authors.lastname: Gómez-Recio
authors.forename: C
authors.initials: C
authors.lastname: Romero
authors.forename: I
authors.initials: I
authors.lastname: Lozano
authors.forename: R
authors.initials: R
authors.lastname: Aguilar
authors.forename: C
authors.initials: C
authors.lastname: Rodríguez
mesh_terms: D000368:Aged; D015906:Angioplasty, Balloon, Coronary / Q000295:instrumentation; D017023:Coronary Angiography; D003327:Coronary Disease / Q000000981:diagnostic imaging / Q000503:physiopathology / Q000628:therapy*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015607:Stents; D016896:Treatment Outcome
vernacular_title: Una comparación de los resultados clínicos y angiográficos del implante del stent Wiktor en arterias grandes y pequeñas.