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  • Title: [Association of plasma amino-terminal pro-A-, B- and C-type natriuretic peptide levels with NYHA grade and echocardiographic derived parameters of cardiac function in heart failure patients].
    Author: Zhao XY, Yang YJ, Zhang J, Kang LM, Wei BQ, Gao XJ, Lü R, Zhang CL.
    Journal: Zhonghua Xin Xue Guan Bing Za Zhi; 2009 Jun; 37(6):486-90. PubMed ID: 19927626.
    Abstract:
    OBJECTIVE: To observe the correlation of plasma amino-terminal pro-A-, B- and C-type natriuretic peptide (NT-proANP, NT-proBNP and NT-proCNP) levels with New York Heart Association (NYHA) functional class and echocardiographic derived parameters of cardiac function in heart failure patients. METHODS: Data of NYHA grade, echocardiographic derived parameters of cardiac function, plasma levels of NT-proANP, NT-proBNP and NT-proCNP (measured by enzyme immunoassay method) were obtained in 112 heart failure patients and 44 normal control subjects. The correlation analysis was made between NT-proANP, NT-proBNP, NT-proCNP and NYHA functional class, left atrium diameter (LAD), left ventricular end-diastolic diameter (LVEDD) and left ventricular ejection fraction (LVEF), respectively. RESULTS: The plasma concentrations of NT-proANP, NT-proBNP and NT-proCNP in heart failure patients were significantly higher than in control group (all P<0.05). Correlation analysis revealed a strong correlation between NT-proANP and NT-proBNP (r = 0.790, P = 0.000) and a weak correlation between NT-proCNP and NT-proBNP (r = 0.278, P = 0.003) as well as between NT-proCNP and NT-proANP (r = 0.236, P = 0.012) in heart failure patients. Univariant analysis showed that NT-proANP and NT-proBNP were positively correlated to LAD, LVEDD and negatively correlated to LVEF (all P<0.05) while there was no significant correlation between NT-proCNP and echocardiographic derived parameters of cardiac function in heart failure patients. Multivariate stepwise regression analysis including age, gender, NYHA classification, LAD, LVEDD and LVEF revealed that NYHA classification, LVEF, LAD and age were independent predictors of NT-proANP; while NYHA classification, LVEF and age were independent predictors of NT-proBNP while there was no association among these factors and NT-proCNP. CONCLUSION: In heart failure patients, the plasma concentration of NT-proANP, NT-proBNP and NT-proCNP were significantly increased and NT-proANP, NT-proBNP but not NT-proCNP were significantly correlated to NYHA classification and echocardiographic derived parameters of cardiac function.
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