Blood types (lesson 6) Flashcards
How is blood type determined?
By presence of antigens on the surface of RBC’s
Within blood plasma what is also there?
Antibodies
What happens if you give someone the wrong blood?
Antibodies in plasma can make RBC clump up (agglutination)
What does anti-serum do?
Anti-serum detects presence of antigens on RBC through agglutination
What happens if anti-serum is added with blood that has the same letter, and what happens if they are both added?
Will agglutinate (clump together)
Both will agglutinate if blood type is AB
What happens to those who have blood type O?
-People with type O can donate to anyone
-No antigens found on cell membrane of RBC
-“Universal Donor”
What happens to those who have blood type AB?
People with type AB can receive blood from anyone, since their plasma has no antibodies to react with antigens they may receive
What are Rh?
Another antigen found on red blood cells
People who have Rh are considered to be..?, and what if they don’t?
People who have Rh are considered to be Rh+, and people who don’t have Rh are considered to be Rh-
If you have Rh+ what will you not have?
You will not have Rh antibodies in your plasma
If you have Rh- what will you produce?
You will produce antibodies if you contract with Rh+ blood
What is erythroblastosis fetalis?
During pregnancy Rh factor can cause problems
Mother who is Rh- and carrying a baby that is Rh+
-Mother may produce antibodies to foreign antigen
-Anti-Rh antibodies cross placenta to baby
-Start destroying the RBC of baby, leading to death of baby
What is the treatment to erythroblastosis fetalis?
Once the baby blood type of known to be Rh+, at 28 weeks the mother is given meds to remove the anti-Rh antibodies from her blood
