Ductus venosus agenesis prevents transmission of central venous pulsations to the umbilical vein in fetal sheep.


Velocity pulsations in the umbilical vein are widely used as a marker for congestive heart failure in the fetus. It has been suggested that the atrial pressure waves are transmitted to the umbilical vein mainly through the ductus venosus. In a case of ductus venosus agenesis in a fetal sheep of 110 days' gestation, we recorded pressures in the inferior vena… (More)


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