04 blood types

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  • 04 blood types

    1. 1. Blood Types
    2. 2. Blood Types
    3. 3. Blood TypesBlood cells havedifferent markers ontheir surface. Thesemarkers are calledantigens.Common antigens: A BDifferentcombinations ofthese antigensresult in differentblood types.
    4. 4. Blood TypesAnother antigen ofclinical significanceis D antigenThis antigen isused to identifythe Rhesus factor(Rh) of the blood.Rh+ = presence ofD antigenRh- = lack of Dantigen
    5. 5. Blood TypesAlong with antigens onthe surface of red bloodcells, the body containsspecific antibodiesdissolved in the blood.These antibodies bindto foreign blood andcause the blood toclump together.These antibodies attackforeign blood types (i.e.Type A blood has Anti-Bantibodies)
    6. 6. Blood TypesSummary of blood types and antibodies
    7. 7. Blood Types This means that people with Type B blood cannot receive a blood transfusion with Type A blood.
    8. 8. Blood Types Summary of Blood Type and AntibodiesOnly type AB blood hasno antibodies againstother blood types.The presence ofantibodies presents achallenge for bloodtransfusion/donation.Video:Blood groups and antibodies
    9. 9. Blood TypesBlood transfusion: Blood Centrifuged bloodOnly red blood cells are Containstransferred in a blood antibodiestransfusion.The antibodies in theplasma are separatedfrom the red blood cellswith a centrifuge. Does not contain antibodies
    10. 10. Blood Types Type O recipientBlood transfusion:The antibodies in therecipient (the person A Areceiving the blood) will A Aattack other types ofblood. A A A AExample: Type A transfusionIf Type A blood was givento a Type O recipient, the A Arecipient’s Anti-A andAnti-B antibodies will A Aattack the foreign bloodand cause it to clump. Antibodies bind to the blood cells and cause them to clump
    11. 11. Blood TypesBlood transfusion:Blood transfusions withthe inappropriate bloodtype causes systemicblood clumping(agglutination) andpotentially death. antibodies
    12. 12. Blood TypesBlood transfusion: Rh-complicationsA patient who is Rh-negative may have Anti-Rh antibodies, which cancause the blood toagglutinate.Example:A mother may be Rh-while her fetus is Rh+She MAY develop Anti-Rhantibodies if her bloodbecomes in contact withher baby’s blood.
    13. 13. Blood TypesBlood transfusion: Rh-complicationsIf the Rh-negativemother develops Anti-Rh antibodies, then hernext pregnancy may beterminated if her newantibodies reach her Rh-positive fetus.
    14. 14. Blood TypesBlood transfusion game:Blood Typing Game

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