【摘要】 目的评价组织多普勒技术测定胎儿右心收缩及舒张功能的可行性,并探讨胎儿时期的右心功能特点。方法超声观察61例正常胎儿的心脏,四腔切面多普勒测量三尖瓣口血流(E,A,E/A),组织多普勒测量瓣环运动速度(Ea,Aa,Sa,Ea/Aa),另有30例胎儿使用M型测量获得右室射血分数EF及短轴缩短率FS)。将三尖瓣口血流与舒张期三尖瓣环运动速度测值、三尖瓣环收缩速度与EF(FS)进行相关分析,并将各数值与孕周进行相关分析。结果三尖瓣口血流与三尖瓣环舒张期运动速度成正相关,各组数值随孕周的增加而增长;三尖瓣环收缩速度Sa与EF(FS)成正相关,二者与孕周无关。结论组织多普勒技术是一项新的反映胎儿心脏收缩、舒张功能的方法。更多还原

【Abstract】 Objective To assess the feasiability of tissue Doppler image technique in evaluating fetuses’ right ventricular systolic and diastolic function.Method 61 normal fetal hearts were examined,measuring the peak velocity of blood stream including E,A,E/A at tricuspid valve orifice on four-chamber view and the velocity of valve annulus including Ea,Aa,Sa and Ea/Aa.Correlation analysis between the velocity of orifice and annulus according to gestation age and EF was made.Results There was positive correlation between the diastolic velocity of orifice and annulus.It had positive correlation between the systolic velocity Sa and EF,but both Sa and EF had no correlation with gestation age.Conclusion Tissue Doppler imaging is a new effective method to evaluate feta’s right ventricular systolic and diastole function.更多还原