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Hypertrophic cardiomyopathy (HCM) might exhibit not only diastolic, but also latent systolic dysfunction. Therefore combined assessment of both systolic and diastolic function using myocardial performance index (Tei index) can be useful in HCM. Plasma brain natriuretic peptide (BNP) level is reported to be elevated in HCM, but the mechanism of BNP elevation in HCM remains to be established.

circulation journal

Functional Assessment by Myocardial Performance Index (Tei Index) Correlates With Plasma Brain Natriuretic Peptide Concentration in Patients With Hypertrophic Cardiomyopathy