董金杭,陈明
DONG Jinhang,CHEN Ming

• 1:同济大学附属上海市东方医院心脏医学部

摘要(Abstract)：

目的:探讨三维斑点追踪成像技术(3D-STI)对静息状态下高血压患者心肌收缩功能异常的评判价值。方法:选取高血压患者38例,正常健康对照组33例,采集实时左心室全容积图像,应用3D-STI软件进行分析,得出左心室射血分数(LVEF)、左心室纵向收缩期峰值应变值、左心室面积收缩期峰值应变值;比较两组之间各应变指标的差异,分析3D-STI对高血压患者左心室心肌应变特征评价的可行性。结果:高血压组左心室纵向及面积收缩期峰值应变值较对照组减低(P<0.05),对照组左室纵向收缩期峰值应变从基底段至心尖段呈逐渐增大趋势;Pearson相关分析表明,高血压组左室整体纵向、面积收缩期峰值应变与LVEF相关(r1=0.758,P1=0.000;r2=0.567,P2=0.000)。结论:3D-STI可通过测量心肌应变值,客观地评价高血压患者左心室收缩功能。
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.

关键词(KeyWords)： 超声心动描记术,三维;三维斑点追踪成像技术;高血压;心肌收缩;射血分数;左室面积收缩期峰值应变
echocardiography,three-dimensional;three-dimensional speckle tracking imaging;hy-pertension;myocardial contraction;ejection fraction;left ventricular area peak systolic strain

Abstract:

Keywords:

基金项目(Foundation):

作者(Author): 董金杭,陈明
DONG Jinhang,CHEN Ming

DOI: 10.19367/j.cnki.1000-2707.2014.02.020

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