title: A systematic review of BNP as a predictor of prognosis in persons with coronary artery disease.
abstract: OBJECTIVE
  This systematic review was conducted to examine whether B-type natriuretic peptide (BNP) can predict mortality and other cardiac endpoints in persons diagnosed with coronary artery disease (CAD).
  
  
  METHODS
  Databases were searched from 1989 to February 2005 for primary studies that measured BNP for the purpose of diagnosis, prognosis, and monitoring treatment.
  
  
  RESULTS
  In 18 studies, concentrations of BNP were found to have consistent positive associations with poorer prognoses for persons with CAD. The overall range of effect (95% confidence interval) was 2.31 to 5.02, measured via a random effects meta-analysis on studies reporting an odds ratio. Prognostic ability was similar for mortality and non-fatal outcomes. Ranges of estimated measures of effect (i.e., odds ratio, relative risk, hazard ratio) were concentrated between 1.33 to 2.94 for mortality and 1.01 to 3.03 for non-fatal outcomes.
  
  
  CONCLUSIONS
  Further research is needed to assess whether prognostic ability differs by comorbidity or concomitant treatment. As well, the importance and selection of cut points remains unresolved. Until greater clarity is given to these matters, it would be prudent for clinicians to employ caution when using concentrations of BNP to predict the prognosis of persons with CAD.
authors.affiliation: McMaster Evidence-Based Practice Center, Department of Clinical Epidemiology and Biostatistics, McMaster University, Hamilton, ON, Canada.
authors.forename: Mark
authors.initials: M
authors.lastname: Oremus
authors.forename: Parminder S
authors.initials: PS
authors.lastname: Raina
authors.forename: Pasqualina
authors.initials: P
authors.lastname: Santaguida
authors.forename: Cynthia M
authors.initials: CM
authors.lastname: Balion
authors.forename: Matthew J
authors.initials: MJ
authors.lastname: McQueen
authors.forename: Robert
authors.initials: R
authors.lastname: McKelvie
authors.forename: Andrew
authors.initials: A
authors.lastname: Worster
authors.forename: Lynda
authors.initials: L
authors.lastname: Booker
authors.forename: Stephen A
authors.initials: SA
authors.lastname: Hill
mesh_terms: D015415:Biomarkers / Q000097:blood* / Q000378:metabolism; D003324:Coronary Artery Disease / Q000175:diagnosis* / Q000378:metabolism; D006801:Humans; D008962:Models, Theoretical; D020097:Natriuretic Peptide, Brain / Q000097:blood* / Q000378:metabolism; D011379:Prognosis
chemical_list: D015415:Biomarkers; D020097:Natriuretic Peptide, Brain