Rh incompatibility occurs when the mother's blood type is Rh negative and her fetus' blood type is Rh positive.
Part 2:
If some of the fetus' blood passes into the mother's blood stream, her body will produce antibodies in response.
Part 3:
These antibodies could pass back through the placenta and harm the fetus' red blood cells, causing mild to serious anemia in the fetus.
Review Date: 8/18/2006 Reviewed By: Benjamin W. Van Voorhees, MD, MPH, Assistant Professor of Medicine and Pediatrics, The University of Chicago, Chicago, IL. Review provided by VeriMed Healthcare Network.