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应用多普勒超声心动图研究胎儿三尖瓣返流(TR)的围产期产生机制及其临床意义。对656例孕周为20周～37周胎儿进行多普勒超声心动图检查,检出TR 88例,其中胎儿先心病组16例,心律失常组43例,双胎输血征7例,母亲患糖尿病者2例,而正常胎儿588例中仅发现TR 33例(占5.62％)。结果表明,胎儿时期右室占优势使右室处于高压腔状态,故正常胎儿的TR发生率极低,且多属生理性范围。因此,多普勒超声检出胎儿TR,首先提示其胎儿可能伴有先天性心脏异常或其它因素导致的心功能降低。
Application of Doppler echocardiography in the study of fetal tricuspid regurgitation (TR) perinatal mechanism and its clinical significance. Doppler echocardiography was performed on 656 fetuses with gestational weeks of 20 weeks to 37 weeks. TR 88 cases were detected, including 16 cases of fetal congenital heart disease, 43 cases of cardiac arrhythmia, 7 cases of twins blood transfusion, There were 2 cases of diabetes mellitus, while only 33 cases (5.62%) of TR were found in 588 normal fetuses. The results showed that the fetus during the right ventricular occupy the right ventricle in a state of high pressure chamber, so the normal fetal TR rate is very low, and mostly physiological range. Therefore, Doppler ultrasound detected fetal TR, first suggested that their fetus may be associated with congenital heart abnormalities or other factors lead to decreased cardiac function.