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A&P Ex. 43

Blood Typing

What does blood typing involve? Identifying protein substances called antigens present in red blood cell membranes.
What is the term "agglutination" in blood typing? If a particular antibody contracts a corresponding antigen, a reaction occres, and the red blood cells clump together
What is the final check on blood compatibility before transfusions? A cross-matching test occurs.
What happens in a cross-matching test? Small samples of blood from donor and the recipient are mixed to be sure agglutiation (clumping) doe NOT create a transfusion reaction.
What antigen is checked for the Rh factor? D antigen
What may be the result of when an Rh - pregnant women may obtain some RBCs from an Rh + fetus during the birth process or during miscarrage? Mother would begin producing anti-D antibodies, creating complications for the second and future pregnancies
What is the condition called when the mom produces anti-D antibodies creating complications for second and future pregnancies? Hemolytic disease of the fetus and newborn (erythroblastosis fetali)
How can erythroblastosis fetails be prevented? Proper administration of RhoGAM, which prevents the mother from producing anti-D antibodies.
Created by: elizabethcosio