Prenatal ultrasonographic diagnosis of the fetal ductus venosus abormalities / 中华超声影像学杂志

ABSTRACT

Objective To explore the prenatal ultrasound image features and clinical significance of fetal ductus venosus abormalities . Methods Fifteen fetuses with ductus venosus abormalities diagnosed by prenatal ultrasonography at Peking University T hird Hospital were retrospective review . T he prenatal findings ,umbilical shunting type ,perinatal outcomes ,and autopsy reports were analyzed . Results Fourteen fetuses were found with absence of ductus venosus . In 6 fetuses the umbilical vein connected to the portal vein ,5 fetuses the umbilical vein connected to the inferior vena cava and 3 fetuses the umbilical vein connected to the right atrium . T he remaining 1 fetus was found obliteration of ductus venosus . Absence of ductus venous showed no normal ductus venous and the umbilical vein almost always drained directly into portal vein ,inferior vena cava or right atrium . Obliteration of ductus venous showed normal ductus venous was replaced by a tiny echogenic string without blood flow . T hree cases had intracardiac and extracardiac abnormalities ; 4 cases had extracardiac abnormalities only ; 8 of these ,ductus venosus abormality were isolated . T wo cases had trisomy 21 syndrome . Four patients underwent legal termination of pregnancy ; 2 were intrauterine fetal death ; and 8 carried to term wit normal outcome ; the remaining one underwent operation due to extracardiac abnormality and postoperative course was uneventful . Conclusions Prenatal ultrasound can be used to diagnose fetal ductus venosus abormalities . Hemodynamic depends on umbilical venous drainage site and diameter . T he prognosis for this group of anomalies depends on the chromosomal abnormalities and additional findings . Chromosome and ultrasonic monitoring are suggested for following pregnancy .