单心动周期三维超声评价心梗后的左心收缩功能及同步性  

Evaluation of the Left Ventricular Systolic Function and Synchrony in Patients with Myocardial Infarction by Single Beat Real-time Three-dimensional Echocardiography

作　　者：杨桂荣[1] 王中阳[1] 高文祥[1] 

机构地区：[1]泰州市人民医院超声科,江苏泰州225300

出　　处：《泰州职业技术学院学报》2013年第5期59-62,共4页Journal of Taizhou Polytechnic College

摘　　要：目的应用单心动周期三维超声评价心肌梗塞患者的左心收缩功能及同步性,以便方便、快捷、准确地识别心肌梗塞的节段。方法正常组30例,心梗组27例,先用二维Simpson’s法测定左室整体EF值,再用单心动周期三维超声测左室整体EF值、SDI17值、DDI17值及各节段的容积时间曲线、EF值曲线。比较各组间参数的差异及相关性。结果正常组2D法和4D法测得的左室射血分数无明显差异。心梗组2D法和4D法测得的左室射血分数差异显著。正常组和心梗组的SDI17值差异显著,DDI17值在两组间无明显差异。结论单心动周期三维超声心动图能全面真实地显示左室的几何形态,本研究显示心梗后左室整体EF值下降,17节段容积-时间曲线同步性差,曲线图直观明了,可以方便、快捷、准确地识别心肌梗塞的节段。Objective To evaluate the left ventricular systolic function and synchrony in patients with myocardial infarction by single beat real-time three-dimensional echocardiography （4D）. Methods Thirty normal subjects, twenty-seven patients with myocardial infarction were enrolled in this study. First, left ventricular ejection fraction （LVEF） were measured with 2D biplane modified Simpson＇s way. Then, LVEF, systolic dyssynchrony index of 17 segments （SDI 17）, diastolic dyssynchrony index of 17 segments （DDI17）, regional volume-time curve and regional ejection fraction curve were measured with 4D. A statistics study was done to analyze the regress relationship. Results LVEF was not significantly different with 2D and 4D in normal subjects, it was significantly different in patients with myocardial infarction. SDI17 was significantly different among normal subjects and patients with myocardial infarction. Conclusion 4D can be used to assess accurately left ventricular global and re- gional function and wall motion synchronism. The left ventricular global and regional systolic and diastolic dys- function has effect negatively on wall motion synchrony in patients with myocardial infarction.

关 键 词：单心动周期三维超声 心肌梗塞 收缩功能 同步性 

分 类 号：R542.22[医药卫生—心血管疾病]