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Summary BACKGROUND: In patients with clinically stable chronic heart failure, circulating B-type natriuretic peptide (BNP) levels may exhibit considerable variation over a period of a few days. The aim of this study was to evaluate the clinical impact of this phenomenon. METHODS: In 23 patients with clinically stable mild-to-moderate systolic heart failure [median (interquartile range) 72 (64–77)...
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