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in ur test book or on the internet, research the condition called hemolytic disease of the...

in ur test book or on the internet, research the condition called hemolytic disease of the newborn, Describe HDN and explain why it is important for a couple to know their blood type before having children.

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Haemolytic disease of newborn is also known as eyrthoblastosis feotalis. It is an alloimmune condition in which the antibodies produced by the mother cross the placenta and destroy the red blood cells of the foetus causing hemolysis.

Haemolytic disease of newborn is caused when a Rh negative mother has a baby with a Rh positive father. If the fetus is Rh positive, anti Rh antibodies will be formed in the mothers blood against the Rh factor. These antibodies wll not pose a problem during the first preganany. But during the second pregnancy, if the fetus is Rh positive, the anti Rh antibodies formed in the mother will cross the placenta and attack the red blood cells of the Rh positive fetus. This will lead to hemolysis. This condition is known as haemolytic disease of newborn.

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