Diagnosis of decreased segmental deformation of the left ventricular myocardium in a teenager at the early stage of hypertrophic cardiomyopathy (clinical observation)

The article presents a clinical observation that revealed a decrease in segmental deformation of the left ventricular myocardium in a 15-year-old teenager at the early stage of asymmetric non-obstructive hypertrophic cardiomyopathy (HCM). To assess myocardial systolic function, the following were used: ejection fraction and shortening of the left ventricle, as well as indicators of global and segmental myocardial deformation, determined by echocardiographic study using the 2D speckle-tracking method. There was no change in ejection fractions and shortening of the left ventricle, global longitudinal deformation of the myocardium, but there was a decrease in longitudinal and circular deformation in individual segments of the left ventricle, which, in general, was the basis for prescribing cardioprotective therapy.