全方向M型超声心动图左室径向心肌运动速度梯度评价局部心肌功能的应用价值

目的 应用全方向M型超声心动图的左室径向心肌运动速度梯度评价局部心肌功能.方法 32例肥厚型心肌病患者,20例高血压病伴左室壁增厚患者,36例健康自愿者,应用LEJ-2型全方向M型超声心动图测量并计算左室短轴上16节段的心肌运动速度梯度.结果 对照组左室短轴的心肌速度梯度从基底部至心尖部呈递减趋势(P<0.05).肥厚型心肌病患者与高血压病伴左室壁增厚患者的左室径向心肌速度梯度比对照组降低(P<0.05).结论 全方向M型超声心动图测量的左室径向心肌运动速度梯度直接反映了与厚度有关的局部心肌运动信息,对评价心肌肥厚患者的左室局部心肌功能具有重要的临床价值.

Evaluation of left ventricular radial myocardial motion velocity gradient in assessment of regional myocardial function by omni-directional M-mode echocardiography

Objective To assess regional myocardial function by left ventricular radial myocardial motion velocity gradient(MVG) measured by omni-directional M-mode echocardiography(OME). Methods There were 32 patients with hypertrophic cardiomyopathy(HCM), 20 patients with hypertension of left ventricular hypertrophy(HLVH),and 36 healthy volunteers in the study, LEJ-2 mode OME was used to measure and calculate MVG of 16 segment on left ventricular short axes. Results In the control group,MVG on left ventricular short axes were found to be decreased progressively from base plane to apical plane. Compared with the control group,the left ventricular MVG were reduced in HCM group and HLVH group( P <0. 05). Conclusions The left ventricular MVG can correspond directly to regional thickened myocardial motion,and can be used to evaluate left ventricular myocardial function in patients with thickened myocardium.