title: The predictive capacity and additional prognostic power of N-terminal pro-B-type natriuretic peptide in Chinese elderly with chronic heart failure.
abstract: OBJECTIVE
  This study was conducted to research the prognostic utility of N-terminal pro-B-type natriuretic peptide (NT-proBNP), compare the utility of the Seattle Heart Failure Score (SHFS) with NT-proBNP, develop a risk-evaluation model based on NT-proBNP, assess the associations of NT-proBNP with patient characteristics, and screen for decisive factors of NT-proBNP in Chinese elderly with chronic heart failure (CHF).
  
  
  METHODS
  There were 306 patients (≥60 years) with CHF chosen as study subjects. Each one received an assessment of NT-proBNP on serum. The end point was all-cause mortality during a mean follow-up period of 471 days.
  
  
  RESULTS
  Subjects had a median age of 85 (60-100) years, a median NT-proBNP of 1,743.4 pg/mL, and a median SHFS of 1.87. During the follow-up period, 104 deaths occurred. NT-proBNP was significantly related to mortality (odds ratio 1.603, 95% confidence interval 1.407-1.826; P<0.001) and the significance persisted after full adjustment (odds ratio 1.282, 95% confidence interval 1.103-1.489; P=0.001). Age, New York Heart Association class IV CHF, plasma albumin, and neutrophils/lymphocytes were also independent predictors for mortality (P<0.05 for all). NT-proBNP and the SHFS showed similar predictive capacities (0.736 versus 0.796, P=0.105). The addition of NT-proBNP to the SHFS (0.818 versus 0.796, P=0.168) generated marginal growth in the c-statistic. The model based on NT-proBNP consisting of all selected predictors in this study, including age, New York Heart Association class IV CHF, plasma albumin, neutrophils/lymphocytes, and NT-proBNP, had a moderately higher c-statistic compared with the SHFS (0.846 versus 0.796, P=0.066). NT-proBNP was bound with the SHFS (r=0.500, P<0.001). Characteristics regarding general condition, inflammation, and cardiac and renal function were the decisive factors of NT-proBNP (P<0.05 for all).
  
  
  CONCLUSIONS
  As a comprehensive representation of the patient characteristics described earlier, NT-proBNP values provided significant prognostic power similar to the SHFS in Chinese elderly with CHF. A novel model based on NT-proBNP could offer help for risk stratification.
authors: Department of Geriatric Cardiology, Chinese People's Liberation Army General Hospital, Beijing, People's Republic of China ; Department of Cardiology and Hainan Branch, Chinese People's Liberation Army General Hospital, Beijing, People's Republic of China.
authors: Shihui
authors: S
authors: Fu
authors: Department of Cardiology and Hainan Branch, Chinese People's Liberation Army General Hospital, Beijing, People's Republic of China.
authors: Leixing
authors: L
authors: Xie
authors: Department of Geriatric Cardiology, Chinese People's Liberation Army General Hospital, Beijing, People's Republic of China ; Department of Cardiology and Hainan Branch, Chinese People's Liberation Army General Hospital, Beijing, People's Republic of China.
authors: Dongyun
authors: D
authors: Li
authors: Department of Geriatric Cardiology, Chinese People's Liberation Army General Hospital, Beijing, People's Republic of China.
authors: Ping
authors: P
authors: Ye
authors: Department of Geriatric Cardiology, Chinese People's Liberation Army General Hospital, Beijing, People's Republic of China.
authors: Leiming
authors: L
authors: Luo
mesh_terms: D000367:Age Factors; D000368:Aged; D000369:Aged, 80 and over; D015415:Biomarkers; D002681:China; D002908:Chronic Disease; D015897:Comorbidity; D005260:Female; D006333:Heart Failure / Q000097:blood / Q000175:diagnosis* / Q000503:physiopathology*; D006439:Hemodynamics; D006801:Humans; D008297:Male; D008875:Middle Aged; D020097:Natriuretic Peptide, Brain / Q000097:blood*; D010446:Peptide Fragments / Q000097:blood*; D011237:Predictive Value of Tests; D011379:Prognosis; D018570:Risk Assessment; D012307:Risk Factors; D012720:Severity of Illness Index
chemical_list: D015415:Biomarkers; D010446:Peptide Fragments; C109794:pro-brain natriuretic peptide (1-76); D020097:Natriuretic Peptide, Brain
keywords: NT-proBNP; chronic heart failure; elderly; prognosis