组织多普勒超声测量二尖瓣环运动速度评价左室舒张功能

目的：用组织多普勒技术测定二尖瓣环舒张期运动速度评价左室舒张功能，方法；对８０全空和进行门控血池造影后３小时的３０例心肌梗患者的舒张期二法瓣环运动速度进行测量，分别在心尖四腔切面和二腔切面上测量二法瓣环间隔处，侧壁处、前壁处及后壁处的各位点舒张早期运动速度峰值Ｅｍ、舒张晚期运动速度峰值Ａｍ及二者的比值Ｅｍ／Ａｍ，并计算各点处的平均值。结果：１．心梗患者各位点的Ｅｍ测值及Ｅｍ／Ａｍ比值较正常对照组明

Doppler Tissue Echocardiography Measurement of Mitral Annulus Velocity in Evaluation of Left Ventricular Diastolic Function

Objective:To evaluate left ventricular diastolic function using diastolic mitral annular velocity by Doppler tissue echocardiography.Methods:Thirty patients with myocardial infarction(MI)and 60 matched healthy subjects were studied by Doppler tissue Mmode4 mitral annular sites:septal and lateral from apical 4chamber views,anterior and posterior from 2chamber views were adopted. The earlydiastolic and latediastolic peak velocity of the mitral Annulus (Em,Am respectively)and the Em/Am ratio were measured,the mean value of the Em,Am and the Em/Am ratio from the above mentioned four sites were calculatedResults:1All the MI patients had a decreased Em and Em/Am ratio at all sites, but the Am was not significantly different with the healthy subjects;2There was a difference in the Em,Am,and Em/Am ratio of the different sites for the different myocardial infarction site in MI patients;3In 30 MI cases, the correlation between the mean value of the Em and Em/Am ratio from the four sites and left ventricular PFR obstained by radionuclide ventriculography was good.Conclusion:The diastolic mitral annular velocity can be used as a method to evaluate the LV diastolic function in MI.