alexa Variability in Measurement of BNP in Routine Evaluation of Heart Failure(VAMPIRE)
ISSN: 2155-9880

Journal of Clinical & Experimental Cardiology
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Research Article

Variability in Measurement of BNP in Routine Evaluation of Heart Failure(VAMPIRE)

Pam R.Taub1,2, Kevin Shah2, Kevin Jiang2, Paul Clopton2, Mitchell Saltzberg3, Alan S. Maisel1,2 and Robert L. Fitzgerald2,4*
1University of California San Diego, Division of Cardiology, San Diego, CA, USA
2Veterans Affairs Medical Center, La Jolla, CA, USA
3Midwest Heart Specialists, in Downers Grove, IL, USA
4University of California San Diego, Pathology Department, San Diego, CA, USA
Corresponding Author : Robert L. Fitzgerald
PhD, Center for Advanced Laboratory Medicine
10300 Campus Point Drive
Suite 150, San Diego, CA 92121
Tel: (858) 657-5733
Fax: (858) 657-5807
E-mail: [email protected]
Received October 16, 2011; Accepted November 20, 2011; Published November 25, 2011
Citation: Taub PR, Shah K, Jiang K, Clopton P, Saltzberg M, et al. (2011) Variability in Measurement of BNP in Routine Evaluation of Heart Failure (VAMPIRE). J Clinic Experiment Cardiol S2:002. doi:10.4172/2155-9880.S2-002
Copyright: © 2011 Taub PR, et al. This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.
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Abstract

Background: B-type natriuretic peptide (BNP) is an established biomarker for diagnosis of acute heart failure (HF). However, criteria for interpreting BNP changes over time prior to clinical decompensation have not been well established. Methods: BNP concentrations were followed in 192 patients with HF who had at least 5 BNP measurements over 6 month to 2 year period. Decompensation was defined as a hospitalization for HF. For patients (N = 30) who had a recent (within 2 weeks) BNP measured prior to decompensation, BNP concentrations were examined to determine if there was a significant rise prior to decompensation. Results: For patients who had a BNP concentration measured within 2 weeks of decompensation, there was a significant increase in BNP concentration prior to decompensation. When patients with a baseline BNP < 200 pg/mL decompensated, their BNP changed by a mean of 560% while when patients with a high baseline BNP (> 200 pg/ mL) decompensated, their concentrations changed by 62% ( p<.0001). Conclusion: Patients with low baseline BNP have significantly larger percent changes in BNP concentrations prior to decompensation than those with higher baseline BNP levels. In conclusion, serial sampling demonstrated that there is potential window prior to hospitalization for HF where a rise in BNP concentrations signals decompensation.

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