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Different Implication of Elevated B‐Type Natriuretic Peptide Level in Patients with Heart Failure with Preserved Ejection Fraction and in Those with Reduced Ejection Fraction

There have been no reports that show significant direct relationship between echocardiographic parameters and B‐type natriuretic peptide (BNP) level. This could be due to the heterogeneous pathophysiology of heart failure and a lack of appropriate echocardiographic parameters. We sought to determine the best echocardiographic parameter that described elevated BNP level in patients with heart failure with and without systolic dysfunction.