title: Relationship between plasma concentrations of N-terminal pro brain natriuretic peptide and the characteristics and outcome of patients with a clinical diagnosis of diastolic heart failure: a report from the PEP-CHF study.
abstract: OBJECTIVE
  The aim of this study was to explore the relationships between plasma concentrations of N-terminal pro brain natriuretic peptide (NT-proBNP) and characteristics and prognosis of patients with heart failure and preserved (HFPEF) left ventricular ejection fraction (LVEF). No substantial trial has shown that treatment alters prognosis in patients with HFPEF due, in part, to much lower than anticipated event rates. The lack of a simple, objective test to identify patients with HFPEF at increased risk of cardiovascular events would be valuable.
  
  
  RESULTS
  The Perindopril in Elderly People with Chronic Heart Failure Trial (PEP-CHF) was a randomized, controlled trial comparing perindopril and placebo in patients with symptoms and signs of heart failure who had an LVEF >40% and evidence of LV diastolic dysfunction. The primary endpoint was all-cause mortality or heart failure-related hospitalization. NT-proBNP was measured in 375 patients. Quartile thresholds were 176, 409, and 1035 pg/mL. Patients in the highest quartile of NT-proBNP were older, had lower body mass, more often had atrial fibrillation, had greater atrial and ventricular dimensions and a lower LVEF, and were more likely to receive loop diuretic therapy. Compared with the first quartile of NT-proBNP, the hazard ratios for the primary endpoint in the second {1.38 [95% confidence interval (CI) 0.64-2.99]}, third [2.84 (95% CI 1.42-5.72)], and fourth [4.47 (95% CI 2.30-8.72)] quartiles were increased. In a multivariable model, NT-proBNP, but not echocardiographic measures, was associated with outcome.
  
  
  CONCLUSIONS
  NT-proBNP is a powerful prognostic marker in patients with HFPEF.
authors.affiliation: Department of Cardiology, Castle Hill Hospital, University of Hull, Kingston-upon-Hull, UK. j.g.cleland@hull.ac.uk
authors.forename: John G F
authors.initials: JG
authors.lastname: Cleland
authors.forename: Jacqueline
authors.initials: J
authors.lastname: Taylor
authors.forename: Nick
authors.initials: N
authors.lastname: Freemantle
authors.forename: Kevin M
authors.initials: KM
authors.lastname: Goode
authors.forename: Alan S
authors.initials: AS
authors.lastname: Rigby
authors.forename: Michal
authors.initials: M
authors.lastname: Tendera
mesh_terms: D000368:Aged; D000369:Aged, 80 and over; D015415:Biomarkers / Q000097:blood; D004452:Echocardiography; D005260:Female; D054144:Heart Failure, Diastolic / Q000097:blood* / Q000175:diagnosis / Q000401:mortality; D006760:Hospitalization / Q000706:statistics & numerical data; D006801:Humans; D053208:Kaplan-Meier Estimate; D008297:Male; D020097:Natriuretic Peptide, Brain / Q000097:blood*; D010446:Peptide Fragments / Q000097:blood*; D011379:Prognosis; D013318:Stroke Volume; D016019:Survival Analysis
chemical_list: D015415:Biomarkers; D010446:Peptide Fragments; C109794:pro-brain natriuretic peptide (1-76); D020097:Natriuretic Peptide, Brain