title: Angiographic segment size in patients referred for coronary intervention is influenced by constitutional, anatomical, and clinical features.
abstract: BACKGROUND
  Factors influencing the size of target vessels of patients referred for coronary intervention are poorly defined. We aimed to investigate in a large series of patients undergoing percutaneous intervention the relation of constitutional, anatomical, and clinical features with the reference diameter of coronary vessels treated with stenting.
  
  
  METHODS
  A total of 4,850 de novo coronary lesions, non-ostial and non-bifurcational, located in native vessels were analyzed. The following pre-specified characteristics were analyzed to reflect the relation between constitutional, anatomical, and clinical features on reference vessel diameter: age, gender, height, weight, proximal location, vessel, diabetes, hypertension, multivessel disease, and clinical presentation.
  
  
  RESULTS
  The average reference diameter was 2.66+/-0.50 mm. All pre-specified markers had a significant relation with the vessel reference diameter at univariate analysis, except by hypertension which showed a strong tendency. However, at multivariate analysis, only diabetes, proximal location, multivessel disease, clinical presentation, vessel, weight, and height were identified as independent predictors of reference vessel diameter.
  
  
  CONCLUSIONS
  Reference diameter of coronary vessels at the site of lesions treated by stenting is significantly influenced by a variety of characteristics. We hypothesize that the treated segment size of patients undergoing stenting ultimately reflects the conjoint effect of several different factors, including constitutional, anatomical, and clinical features.
authors.affiliation: Interventional Cardiology, Heart Institute (InCor), University of São Paulo Medical School, São Paulo, Brazil. pedro.lemos@incor.usp.br
authors.forename: Pedro A
authors.initials: PA
authors.lastname: Lemos
authors.forename: Expedito E
authors.initials: EE
authors.lastname: Ribeiro
authors.forename: Marco A
authors.initials: MA
authors.lastname: Perin
authors.forename: Luiz J
authors.initials: LJ
authors.lastname: Kajita
authors.forename: Marco A
authors.initials: MA
authors.lastname: de Magalhães
authors.forename: João L A A
authors.initials: JL
authors.lastname: Falcão
authors.forename: Antonio Esteves
authors.initials: AE
authors.lastname: Filho
authors.forename: Marcus N
authors.initials: MN
authors.lastname: da Gama
authors.forename: Pedro E
authors.initials: PE
authors.lastname: Horta
authors.forename: Gilberto G
authors.initials: GG
authors.lastname: Marchiori
authors.forename: Andre G
authors.initials: AG
authors.lastname: Spadaro
authors.forename: Eulógio E
authors.initials: EE
authors.lastname: Martinez
mesh_terms: D015906:Angioplasty, Balloon, Coronary; D001827:Body Height; D001835:Body Weight; D017023:Coronary Angiography; D003324:Coronary Artery Disease / Q000628:therapy; D023921:Coronary Stenosis / Q000473:pathology; D003331:Coronary Vessels / Q000473:pathology*; D003920:Diabetes Mellitus; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D015999:Multivariate Analysis; D011446:Prospective Studies; D012016:Reference Values; D015607:Stents