title: Relation of coronary collateral circulation with red cell distribution width in patients with non-ST elevation myocardial infarction.
abstract: OBJECTIVE
  We aimed to investigate the relationship between red cell distribution width (RDW) value and coronary collateral circulation (CCC) in patients with non-ST elevation myocardial infarction (NSTEMI).
  
  
  METHODS
  The study population consisted of 322 consecutive patients with NSTEMI. The patients were classified into impaired CCC (group 1, Rentrop grades 0-1) or good CCC (group 2, Rentrop grades 2-3). Baseline RDW was measured as part of the automated complete blood count.
  
  
  RESULTS
  The RDW values were significantly higher in patients with impaired CCC than in those with good CCC (17.2 ± 2.3 vs 14.5 ± 2.5, P < .001). In multivariate logistic regression analysis, RDW (odds ratio: 1.52, 95% confidence interval: 1.30-1.78, P < .001), baseline creatine kinase MB (CK-MB), and absence of preinfarction angina were found to be the independent predictors of impaired CCC. In receiver-operating characteristic curve analysis, the RDW value >15.5 yielded an area under curve value of 0.783, with 77% sensitivity and 73% specificity.
  
  
  CONCLUSIONS
  Our study results demonstrated that, high RDW, high CK-MB, and absence of preinfarction angina were found to be independent predictors of impaired CCC.
authors.affiliation: 1Department of Cardiology, Heart Center, Ataturk University Medical School, Erzurum, Turkey.
authors.forename: Ibrahim Halil
authors.initials: IH
authors.lastname: Tanboga
authors.forename: Selim
authors.initials: S
authors.lastname: Topcu
authors.forename: Tuncer
authors.initials: T
authors.lastname: Nacar
authors.forename: Enbiya
authors.initials: E
authors.lastname: Aksakal
authors.forename: Kamuran
authors.initials: K
authors.lastname: Kalkan
authors.forename: Ilhami
authors.initials: I
authors.lastname: Kiki
authors.forename: Serdar
authors.initials: S
authors.lastname: Sevimli
mesh_terms: D003097:Collateral Circulation; D003326:Coronary Circulation; D004909:Erythrocyte Indices; D004912:Erythrocytes / Q000473:pathology*; D005260:Female; D006801:Humans; D008297:Male; D008875:Middle Aged; D009203:Myocardial Infarction / Q000097:blood*