Пренатальная диагностика персистирующей правой пупочной вены

Abstract

Objective. To determine the incidence of persistent right umbilical vein (PRUV), as well as to study the prognostic value of as a marker of fetal developmental anomalies and neonatal outcomes. Patients and methods. 12,945 pregnant women whose gestation period was 18–41 weeks were examined. Ultrasound scanning was performed using a 3–5 MHz probe. A detailed fetal anatomy assessment was carried out, PRUV was diagnosed on the transverse scan of the fetal abdominal cavity. Results. 23 fetuses with PRUV were revealed: in 22 fetuses – an intrahepatic PRUV as a single anomaly was found, in 1 fetus – an extrahepatic PRUV (frequency 1:562). In all cases of intrahepatic PRUV, associated anomalies of fetal development were not revealed, pregnancy proceeded without complications with a favorable postnatal outcome. In one case of extrahepatic PRUV, cardiomegaly and hyper-echogenic bowel were diagnosed. Conclusion. The presence of PRUV in fetus is a marker of developmental anomalies and it warns a doctor about possible complications. Pregnancy, complicated by PRUV, requires a detailed dynamic observation, as in 30% of cases, there is a fetal growth retardation. The results of our study indicate that PRUV, when it is the only anomaly, has a favorable outcome, but based on the data of other authors, the fetus should be more carefully examined for other congenital malformations. Key words: persistent right umbilical vein, prenatal diagnosis, ultrasound diagnosis