How long the effect of anti-D and abortion last in the body?
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The effect of anti D will last forever until there is another exposure in Rh -ve woman of an Rh +ve blood in the form of blood transfusion or Rh +ve pregnancy. Usually, first pregnancy is spared as the Rh +ve cells when entering the maternal blood at the time of feto maternal hemorrhage like during labor, or rupture of membranes or abortion, there is sensitization of cells and no harm. But when again in second pregnancy there is a transfer of cells, there is Ag- Ab (antigen-antibody) reaction and hemolysis, means the breakdown of red cells and harm to the fetus in the form of anemia, hydrops, etc. That is why we give an injection of anti D to prevent the sensitization of these cells.
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