实时三维超声心动图评价心肌梗死患者左室整体节段心功能及室壁运动的同步性

目的 应用实时三维超声心动图(RT-3DE)评价急性和陈旧性前壁心肌梗死患者左室整体节段舒缩功能及室壁运动同步性,并探讨左室整体及局部舒缩功能对左心室室壁运动同步性的影响.方法 急性前壁心肌梗死组20 例,陈旧性前壁心肌梗死组25 例,正常对照组22 例,均行常规二维及RT-3DE检查,通过Qlab 6.0定量分析软件...

Evaluation of left ventricular global and regional function and wall motion synchronism in patients with myocardial infarction by real-time three-dimensional echocardiography

Objective To evaluate left ventricular global and regional systolic diastolic function and wall motion synchronism,and to explore the impact of left ventricular global and regional systolic diastolic function and wall motion synchronism in patients with acute and old anterior myocardial infarction by real-time three-dimensional echocardiography(RT-3DE).Methods Twenty patients with acute anterior myocardial infarction,twenty-five patients with old anterior myocardial infarction and twenty-two normal subjects were enrolled in this study with underwent two-dimensional echocardiography and RT-3DE.Then global and regional volume-time curve was analyzed with Qlab 6.0 software.Acquired the left ventricular global and regional end diastolic volume(EDV),global and regional end systolic volume(ESV),global,regional and the mean value ejection fraction(EF),regional stroke volume toglobal diastolic volume and the mean value,left ventricular peak ejection rate(PER) and peak flow rate(PFR),the time of minimal systolic volume of 16-segmental’ standard deviation(Tmaso 16-SD%) correction value.Results Compared with control group,left ventricular global EDV,ESV and Tmsv16-SD% in the patients with anterior myocardial infarction were larger,while EF,PER/EDV,PFR/EDV were lower(P<0.05).The most rEDV,rESV were larger,while rEF and rgEF were lower in the zones with infarction and adjacent segments(P<0.05).There were no significant differences between the two anterior myocardial infarction groups with the most parameters.There was negative correlation among LVEF,PER/EDV,PFR/EDV,rEF′,rgEF′ and SDI,while there was positive correlation among rEF′,rgEF′and LVEF.Conclusion RT-3DE can be used to assess accurately left ventricular global and regional function and wall motion synchronism.The left ventricular global and regional systolic and diastolic dysfunction has effect negatively on wall motion synchronism in patients with acute and old anterior myocardial infarction.