Evaluation of speckle tracking imaging on radial strain and circumferential strain from the left ventricular short-axis views in old patients with hypertension

Objective To investigate the clinical application of speckle tracking imaging(STI) in estimating left ventricular remodeling of hypertension.Methods High frame rate two-dimentional(2D) images were recorded from the short-axis views at the levels of apex,papillary muscle and mitral annulus of the left ventricular(LV) respectively.Peak systolic strain of each segment was acquired and the average strain value of three consecutive cardiac cycles was calculated as the peak systolic strain.The average strain values of the three LV short axis views were calculated as the LV global RS and CS.Results RS values of group A and B were significantly increased than those of group N(P0.05),RS values of group C and N had no significantly difference(P0.05),RS values of group D were significantly decreased than those of group N(P0.05).CS values of group A and C had no significantly difference(P0.05),CS values of group D were significantly decreased than those of group N(P0.05).Conclusions Regional wall motion of left LV in patients with myocardial ischemia can be evaluated accurately with speckle tracking echocardiography.