Article

The clinical significance of a urinary B-type natriuretic peptide assay for the diagnosis of heart failure.

Department of Laboratory Medicine, The First Affiliated Hospital of China Medical University, Shenyang, Liaoning, People's Republic of China.
Clinica chimica acta; international journal of clinical chemistry (impact factor: 2.54). 08/2011; 412(17-18):1632-6. DOI:10.1016/j.cca.2011.05.017 pp.1632-6
Source: PubMed

ABSTRACT The purpose of this study was to investigate the applicability of urinary B-type natriuretic peptide (BNP) levels to the diagnosis and prognosis of heart failure (HF) by comparing urinary and plasma BNP levels.
Urinary and plasma BNP levels of 160 patients with HF classifiable into NYHA stages I, II, III, or IV, and 30 healthy control subjects were measured using the microparticle enzyme immunoassay (MEIA). The heart function of each patient was examined by ultrasonic cardiogram and classified according to the NYHA standard.
The levels of urinary and plasma BNP among patients in the HF group were significantly higher than those in the control group. Urinary BNP levels were correlated with plasma BNP levels and NYHA grades of HF and were negatively correlated with LVEF. According to the Cox model multivariate regression analyses on age, gender, heart function class, LVEF, and urinary BNP among patients with post-treatment cardiac events, age and the urinary BNP level were predictors for the independent post-treatment cardiac events.
Measurement of urinary BNP is applicable in clinical diagnosis and prognosis of HF; it provides similar accuracy to plasma BNP in the detection of HF, and it has the advantage of being a noninvasive test.

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Keywords

30 healthy control subjects
 
clinical diagnosis
 
Cox model multivariate regression analyses
 
heart function class
 
HF classifiable
 
independent post-treatment cardiac events
 
microparticle enzyme immunoassay
 
negatively correlated
 
noninvasive test
 
NYHA stages
 
NYHA standard
 
plasma BNP
 
plasma BNP levels
 
post-treatment cardiac events
 
ultrasonic cardiogram
 
urinary
 
urinary B-type natriuretic peptide
 
urinary BNP
 
urinary BNP level
 
Urinary BNP levels
 

Jianqing Song