Evaluation of Left Ventricular Myocardial Strain by Three-dimensional Speckle Tracking Imaging Technology in Patients with Hypertension

Objective: To investigate the value of three-dimensional speckle tracking imaging( 3DSTI) in evaluation of resting left ventricular( LV) systolic function in patients with hypertension. Methods: Thirty-eight patients with hypertension and thirty-three normal subjects as control group were enrolled. Real-time full volume images of LV were collected and stored up,and 3D-STI software was used to analyze and calculate LV ejection fraction( LVEF),LV longitudinal peak systolic strain and area peak systolic strain on-line; Test results of the two groups were compared,and then the feasibility of using 3D-STI to assess LV myocardial strain characteristics in patients with hypertension was analyzed. Results: LV longitudinal and area peak systolic strain in patients with hypertension were lower than those of the control group( P 0. 05); LV longitudinal peak systolic strain of control group showed a increasing trend from basal segments to apical segments of the hearts. Pearson correlation analysis indicated that the LV global longitudinal peak systolic strain and area peak systolic strain in patients with hypertension were correlated with LVEF( r1= 0. 758,P1= 0. 000; r2= 0. 567,P2= 0. 000). Conclusions: 3D-STI can assess LV systolic function in patients with hypertension by accurately measuring myocardial strain.