Evaluation of left ventricular diastolic synchronism in patients with hypertrophic cardiomyopathy by two dimensional speckle tracking imaging
1.Department of Ultrasonography, the Second Affiliated Hospital of Wenzhou Medical University, Wenzhou, 325027; 2.Department of Ultrasonography, Xijing Hospital of the Fourth Military Medical University, Xi'an, 710000; 3.Department of Ultrasonography, the 456th Hospital of Chinese PLA, Jinan, 250000; 4.Department of Ultrasonography, Yan抋n People's Hospital, Yan抋n, 716000
LIU Min1,LIU Liwen2,CAO Hongyan3, et al. Evaluation of left ventricular diastolic synchronism in patients with hypertrophic cardiomyopathy by two dimensional speckle tracking imaging[J]. JOURNAL OF WEZHOU MEDICAL UNIVERSITY, 2014, 44(3): 166-168.
Abstract：Objective: To evaluate diastole synchrony of the different segments of left ventricular in patients with hypertrophic cardiomyopathy by two dimensional speckle tracking imaging. Methods: Forty-seven patients with HCM and thirty-three healthy volunteers were studied by two dimensional speckle tracking imaging.The peak time of early and late diastolic longitudinal, radial, circumferential strain rate were measured from the start point of QRS wave of electrocardiogram. The left ventricular segmental standard deviation (TESRL-SD, TASRL-SD, TESRR-SD, TASRR-SD, TESRC-SD, TASRC-SD) were calculated, which were served as diastolic synchronism indexes in assessing LV diastolic aspect. Results: TESRL-SD, TESRR-SD, TESRC-SD and TASRL-SD were significantly higher in patients with HCM than those in normal controls. TASRR-SD and TASRC-SD were higher in patients with HCM than those in normal controls, but the difference had no statistical significance. Conclusion: Left ventricular diastole dyssynchrony can be evaluated accurately in patients with hypertrophic cardiomyopathy by two dimensional speckle tracking imaging.
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