percutaneous umbilical blood sampling
The sampling of bllod using a needle that is inserted through the mother's abdominal wall and the uterine wall and blood is withdrawn from the umbilical vein where the umbilical cord inserts into the placenta.
Blood may also be withdrawn from the umbilical vein on its way to the foetal liver such as in situations where the foetus is between a posterior placental insertion and the maternal abdomen. Pubs is a technique used both in prenatal diagnosis and prenatal treatment of the foetus.
(05 Feb 2009)
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