肥厚型心肌病患者左心室舒张同步性的二维斑点追踪成像研究

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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.

Key words： echocardiography speckle tracking imaging cardiomyopathy, hypertrophic left ventricular function

Received: 26 September 2013

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	LIU Min1
	LIU Liwen2
	CAO Hongyan3
	TUO Shengjun4
	ZUO Lei2
	YANG Liping2
	TIAN Xinqiao

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https://xb.wmu.edu.cn/EN/ OR https://xb.wmu.edu.cn/EN/Y2014/V44/I3/166