COMPARATIVE STUDY
JOURNAL ARTICLE
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Value of serum N-terminal B-type natriuretic peptide in asymptomatic structural heart disease in Taiwanese population: Comparisons with current ESC Guidelines.

BACKGROUND: The relationship between N-terminal pro-brain natriuretic peptide (NT-proBNP) and cardiac structural or functional anomalies in pre-clinical, asymptomatic Asian populations has not been well identified.

METHODS: From October 2005 to March 2008, we enrolled consecutive asymptomatic adults with preserved global left ventricular (LV) function (ejection fraction>50%) who underwent annual cardiovascular health survey. Circulating NT-proBNP was used to identify echo-defined cardiac structural/functional anomalies and compared to current recommended cut-off from the European Society of Heart Failure.

RESULTS: Among 976 eligible subjects, 371 (38%) had structural heart diseases. Echocardiography-based left atrial diameter (Coef: 71.2), diastolic dysfunction (Coef: 35.4), and presence of pulmonary hypertension (Coef: 83.1) or valvular heart disease (Coef: 56.1, all p<0.05) of any form independently predicted circulating NT-ProBNP. NT-ProBNP cut-off values of 32.8 and 115.4pg/ml for subjects aged ≤ and >75years, respectively, demonstrated areas under the receiver operating characteristic curve of 0.76 (95% CI: 0.73-0.80) and 0.70 (95% CI: 0.52-0.88) for predicting structural or functional anomaly.

CONCLUSION: We examined the feasibility of NT-ProBNP for identifying cardiac structural and functional anomaly in an asymptomatic ethnic Taiwanese population with a relatively lower cut-off value, indicating its potential role for pre-clinical screening of Asian patients.

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