组织多普勒成像对胎儿心脏功能的研究

Study on Fetal Cardiac Function by Tissue Doppler Imaging

目的：探讨组织多普勒成像（DTI）对胎儿心脏功能的作用。方法：147例15-38周的孕妇,使用TDI技术,测定所有胎儿的舒张早期Ea、舒张晚期Aa和收缩期Sa,分别计算左右心室的E/A和E/Ea的值。结果：大于24周孕周的胎儿在左右心室的Ea、Aa、Sa测值与孕周均呈正相关关系。其中右心室和左心室的Ea测值与孕周的相关系数分别为0.78和0.74；右心室和左心室的Aa测值与孕周的相关系数分别为0.39和0.19；而右心室和左心室的Sa测值与孕周的相关系数分别为0.68和0.65。发现大于24孕周的胎儿的E/Ea值与小于24孕周胎儿的E/Ea值相比无明显变化,P〉0.05。结论：通过TDI来评价胎儿心脏舒张功能操作简单,效果明显。

Objective：To investigated the role of Doppler Tissue Imaging（DTI） of fetal cardiac function.Methods：147 cases of 15-38 weeks pregnant women, Used DTI to Measured all of the fetus in early diastole,Ea,Aa diastolic and systolic Sa, Calculated the left and right ventricular E/A and E/Ea values respectively.Results：Fetal with more than 24 weeks gestational age, Ea,Aa,Sa measured values of left and right ventricles showed a positive correlation with gestational age.The correlation coefficient of the right ventricular and left ventricular Ea measured value with the gestational age was 0.78 and 0.74;Aa measured value of the right ventricle and left ventricle and the gestational age correlation coefficient was 0.39 and 0.19;The right ventricular and left ventricular Sa measured value and the gestational age of the correlation coefficient was 0.68 and 0.65.Compared with the E/Ea values more than 24 weeks of gestation the fetus and less than 24 weeks was no significant change,P〉0.05.Conclusion：Used DTI to evaluated the fetal heart diastolic function was a simple, obvious effect method.