title: Clinical and angiographic characteristics of patients with coronary artery ectasia.
abstract: BACKGROUND
  The relationship of the extent of coronary artery ectasia (CAE) with coronary blood flow in the major epicardial arteries has not been adequately assessed. This study aimed at investigating the association of the topographical extent of CAE with coronary flow velocity and clinical characteristics in patients with isolated CAE and in patients with coexisting obstructive coronary artery disease (CAD).
  
  
  METHODS
  We reviewed 3764 consecutive coronary angiograms performed at Athens Euroclinic and identified patients with CAE according to standard criteria. The topographical extent of ectasia was considered, and coronary flow velocity was determined using the TIMI frame count (TFC). The severity of CAD was assessed using the modified Gensini index and the number of diseased vessels. Clinical data were correlated with TFC and CAD severity analysis.
  
  
  RESULTS
  Ectatic lesions were identified in 119 patients. The mean TFC correlated positively with the topographical extent of CAE (rs=0.733, p<0.001). Stepwise multiple linear regression revealed that the topographical extent of CAE and the maximum diameter of the ectatic segment in the corresponding artery are independent predictors of TFC in LAD and RCA. Using multivariate analysis, a history of myocardial infarction was independently associated with CAE extent, and CAD severity.
  
  
  CONCLUSIONS
  The extent of ectasia in the coronary vasculature is correlated with coronary flow velocity and associated with clinical presentation independent of coexisting significant coronary stenoses.
authors.affiliation: Department of Cardiology, Athens Euroclinic, Athens, Greece.
authors.forename: Theodoros A
authors.initials: TA
authors.lastname: Zografos
authors.forename: Socrates
authors.initials: S
authors.lastname: Korovesis
authors.forename: Eleftherios
authors.initials: E
authors.lastname: Giazitzoglou
authors.forename: Maria
authors.initials: M
authors.lastname: Kokladi
authors.forename: Ioannis
authors.initials: I
authors.lastname: Venetsanakos
authors.forename: George
authors.initials: G
authors.lastname: Paxinos
authors.forename: Nikolaos
authors.initials: N
authors.lastname: Fragakis
authors.forename: Demosthenes G
authors.initials: DG
authors.lastname: Katritsis
mesh_terms: D000368:Aged; D017023:Coronary Angiography / Q000379:methods*; D003324:Coronary Artery Disease / Q000000981:diagnostic imaging* / Q000503:physiopathology*; D004108:Dilatation, Pathologic / Q000000981:diagnostic imaging / Q000503:physiopathology; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D012189:Retrospective Studies