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KMID : 0368120070370050202
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Korean Circulation Journal
2007 Volume.37 No. 5 p.202 ~ p.207
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N-terminal Pro B-type Natriuretic Peptide Predicts Cardiac Events in Discharged Patients with Idiopathic Dilated Cardiomyopathy
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Kim Hak-Jin
Jeon Eun-Seok
Choi Jin-Oh
Lee Wang-Soo
Shin Dae-Hee
Cho Sung-Won
Hahn Joo-Yong
Lee Sang-Chol
Park Seung-Woo
Lee Sang-Hoon
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Abstract
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Background & Objectives: Heart failure is a progressive chronic disease with high morbidity and mortality. The aim of this study was to determine whether the N-terminal pro B-type natriuretic peptide (NT-proBNP) levels in the blood can predict readmission due to heart failure or cardiac death (cardiac event) following hospital discharge, and if these are a better predictive marker than a pre-discharge echocardiogram or other laboratory parameters in discharged patients with idiopathic dilated cardiomyopathy (DCM).
Subjects & Methods: The outcomes of 36 patients with idiopathic DCM, diagnosed on hospital admission, were retrospectively evaluated.
Results: During a mean follow-up period of 520 days, a 22.2% rate of cardiac events was observed. Evaluation of the NT-proBNPs showed the mid-term (mean 84th day after discharge) outpatient (OPD) NT-proBNP levels to be a strong predictor of cardiac events, with an area under the curve analysis of 0.90. The optimal mid-term OPD NT-proBNP cut-off level for predicting cardiac events was 1500 pg/mL, with a sensitivity and specificity of 80 and 92%, respectively; patients with levels above this threshold had a 22.9 hazard ratio for cardiac events compared to those with levels below this threshold.
Conclusion: The mid-term OPD plasma NT-proBNP levels were able to predict cardiac events in discharged patients with idiopathic DCM, regardless of the admission or pre-discharge NT-proBNP levels and other laboratory parameters. The measurement of OPD NT-proBNP at the mid term follow-up may be useful in outpatient therapeutic monitoring or for the development of prognostic guidelines in patients with idiopathic DCM.
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KEYWORD
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Cardiomyopathy dilated, N-terminal pro-brain natriuretic peptide, Predictive value of tests, Cardiac event
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