Absent ductus venosus, tricuspid regurgitation, cardiomegaly, chorioangioma

Case contributed by Dr Ersen Alp Özbalcı

Presentation

20-24 weeks detailed obstetric ultrasound. First pregnancy

Patient Data

Age: 33 year
Gender: Female

Case Discussion

It is estimated that 20–30% of the blood of the umbilical vein enters the ductus venosus and directly reaches the left heart crossing through the foramen ovale. The remaining well-oxygenated blood flowing in the umbilical vein is distributed to the left lobe of the liver through the left portal vein. The portal blood flow is directed almost entirely to the right lobe of the liver. It is well accepted that the ductus venosus plays a major role in the regulation of fetal circulation by modifying the volume of its flow depending on the pressure gradient between the umbilical vein and the heart.

The literature suggest that the absence of the ductus venosus is associated with a high incidence of adverse fetal outcomes

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Case information

rID: 37112
Case created: 26th May 2015
Last edited: 4th Sep 2017
Inclusion in quiz mode: Included

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