Left ventricle strain/strain rate in patients with ischemic and dilated cardiomyopathy

The aim of this study was to estimate left ventricle (LV) longitudinal and transverse strain/strain rate and circumferential strain/strain rate in systole and in diastole in patients with dilated and ischemic cardiomyopathy. The analysis was performed in 26 ischemic cardiomyopathy patients and in 15 patients with dilated cardiomyopathy aged from 30 to 68 years with heart failure of III-IV functional class, according to the New York association (NYHA). Speckle Tracking Imaging was used to assess LV strain and strain/rate. The assessment of Global Longitudinal Strain/Strain Rate of LV was performed from apical view; Global Circumferential Strain/Strain Rate was estimated at the levels of basal and apical top segments and papillary muscles; the Strain/Strain Rate analysis in longitudinal and in the transverse direction of each of 19 LV segments was performed. Global Circumferential Strain of LV at the level of basal segments in a systole was reduced by 65.89% in dilated cardiomyopathy patients compared to patients with ischemic cardiomyopathy. No difference was found in LV Global Longitudinal Strain/Strain Rate between patients of two groups. Difference in incidence of registration of LV segments with post#systolic transverse strain of apical segments of anterior wall and intraventricular septum was revealed. In these segments, post#systolic transverse strain was registered in 76.92% of ischemic cardiomyopathy patients with IKMP and not in a single case in patients with dilated cardiomyopathy.