title: [Impact of red blood cell distribution width on risk for bleeding events in patients with non-ST elevation acute coronary syndromes].
abstract: BACKGROUND
  Higher values of red blood cell distribution width (RDW) have recently been associated with worse outcome in patients with cardiovascular disease. However, its relation to bleeding events in patients with non-ST elevation acute coronary syndromes has not been established.
  
  
  OBJECTIVE
  To determine the prognostic value of RDW in patients with non-ST segment elevation acute coronary syndromes, particularly regarding the risk of major bleeding.
  
  
  METHODS
  We analyzed 513 consecutive patients admitted with non-ST elevation acute coronary syndromes. The population was divided into tertiles of baseline RDW and clinical, laboratory characteristics and adverse events were analyzed for each group. The primary outcome was defined as the occurrence of major bleeding (according to the Crusade bleeding score). The predictive value of RDW for risk of major bleeding was determined.
  
  
  RESULTS
  The mean RDW was 15.13%±1.62%. Patients in the third tertile were older and more frequently had renal dysfunction or previous coronary revascularization. Higher values of RDW were associated with greater risk of major bleeding and in-hospital death. RDW >15.7% was an independent predictor of bleeding events (odds ratio 3.1, 95% CI 1.4-6.9).
  
  
  CONCLUSIONS
  In a population of patients with non-ST elevation acute coronary syndromes, RDW was associated with higher in-hospital mortality and was an independent predictor of in-hospital major bleeding.
authors.affiliation: Serviço de Cardiologia, Centro Hospitalar de Setúbal, Setúbal, Portugal. sara.soares.goncalves@gmail.com
authors.forename: Sara
authors.initials: S
authors.lastname: Gonçalves
authors.forename: José
authors.initials: J
authors.lastname: Ferreira Santos
authors.forename: Pedro
authors.initials: P
authors.lastname: Amador
authors.forename: Leandro
authors.initials: L
authors.lastname: Rassi
authors.forename: Ana Rita
authors.initials: AR
authors.lastname: Rodrigues
authors.forename: Filipe
authors.initials: F
authors.lastname: Seixo
authors.forename: Luís
authors.initials: L
authors.lastname: Neves Soares
mesh_terms: D054058:Acute Coronary Syndrome / Q000097:blood* / Q000150:complications* / Q000503:physiopathology; D000368:Aged; D004909:Erythrocyte Indices; D005260:Female; D006470:Hemorrhage / Q000453:epidemiology* / Q000209:etiology*; D006801:Humans; D008297:Male; D012307:Risk Factors