Evaluation Of The Left Ventricular Function In Hypertensive Patients By Echocardiography Imaging

Part I Evaluation of the Left Ventricular Diastolic and Systolic Function in Hypertensive Patients by Spectral Doppler and Tissue Doppler Echocardiography ImagingObjective This study was undertaken to evaluate left ventricular (LV), diastolic and systolic function in hypertensive patients by spectral Doppler and tissue Doppler echocardiography imaging.Methods60hypertensive patients were divided into2groups, which are hypertension without left ventricular hypertrophy (LVH) group and hypertension with LVH group.30normal volunteers were employed as contrast group. Echocardiography were practiced in3groups, LV ejection fraction (EF), stroke volume (SV) and shortening fraction (FS) were measured. Diastolic mitral flow E, A, E/A were measured by pulsed wave Doppler, isovolumic relaxation time (IVRT) were calculated by continuous wave Doppler. Mitral annulus velocity Ea, Aa, Ea/Aa were assessed by tissue Doppler imaging.Results Compared to normal group, the hypertension without LVH group had decreased E, increased A and decreased E/A, whereas EF and FS were not significantly different with normal group. The hypertension with LVH had decreased E, increased A and decreased E/A, while EF, FS were significantly smaller than normal group.Conclusions LV diastolic function of hypertensive patients are impaired and can be present before LVH occurs. Hypertensive patients with LVH have decreased EF, implying the presence of systolic dysfunction. Spectral Doppler and tissue Doppler echocardiography imaging provide good methods to evaluate LV function in hypertensive patients. Part â…¡ Evaluation of the Left Ventricular Strain by Real-time Three-dimensional Speckle Tracking Echocardiography in Patients with Hypertension and Myocardial HypertrophyObjective This study was undertaken to investigate left ventricular (LV) strain in patients with hypertension (HT) and myocardial hypertrophy using three-dimensional speckle tracking echocardiography.Methods Myocardial movement was analyzed in37primary HT patients with myocardial hypertrophy and27healthy volunteers. LV longitudinal, circumferential, radial and area strains were measured. The correlation between each global strain parameter and LV ejection fraction (LVEF) was analyzed.Results LV GSL, GSR and GSA of HT patients with myocardial hypertrophy were significantly lower than the contrast group, whereas GSC showed no significant difference between the two groups. Longitudinal, radial and area strains were decreased in LV basal and middle levels, while decreased circumferential strain was detected only in basal level. There were significant correlations between LVEF and GSL, GSC, GSR, GSA.Conclusions Impairment of LV regional myocardial contractility can be detected by three-dimensional speckle tracking echocardiography.