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Association between septal strain rate and histopathology in symptomatic hypertrophic cardiomyopathy patients undergoing septal myectomy.
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Abstract
Hypertrophic cardiomyopathy (HCM) is histopathologically characterized by myocyte hypertrophy, disarray, interstitial fibrosis, and small intramural coronary arteriole dysplasia, which contribute to disease progression. Longitudinal systolic and early diastolic strain rate (SR) measurements by speckle tracking echocardiography are sensitive markers of regional myocardial function. We sought to determine the association between septal SR and histopathologic findings in symptomatic HCM patients who underwent surgical myectomy.