Chapter 6 Presentation: Blood Typing

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Chapter 6 Presentation: Blood Typing

  1. 1. Chapter 6 Presentation: Blood Typing By: Daniel Marzullo
  2. 2. What is the use of blood typing? <ul><li>Each person’s blood is different due to the presence of antigens (markers) on the surface of erythrocytes (red blood cells). </li></ul><ul><li>Before a person receives a blood transfusion it is important to do blood typing. </li></ul><ul><li>Doctor’s must be sure that the donated blood is compatible with the recipients blood. </li></ul><ul><li>Mixing blood types can be very dangerous, even deadly in some cases. </li></ul>
  3. 3. The ABO System: How it Works <ul><li>In the ABO blood system there are two possible red blood cell markers (1 method by which cells identify themselves): </li></ul><ul><ul><ul><ul><ul><li>A & B </li></ul></ul></ul></ul></ul><ul><ul><ul><ul><li>Ex: A person with an A marker is said to have type A blood, a person with a B marker will have type B blood. </li></ul></ul></ul></ul>
  4. 4. Type A Blood <ul><li>Type A blood produces anti-B antibodies that will attack type B blood. </li></ul><ul><li>A person with type A blood may only donate their blood to another person with type A blood or someone who has type AB blood. </li></ul>
  5. 5. Type B Blood <ul><li>Type B blood has the presence of anti-A antibodies that will attack type A blood. </li></ul><ul><li>A person with type B blood can only donate blood to another person with type B blood or someone who has type AB blood. </li></ul>
  6. 6. Type AB Blood <ul><li>Type AB blood has BOTH markers present and does not contain ANY antibodies. </li></ul><ul><li>For this reason type AB blood is considered the universal recipient . </li></ul><ul><ul><li>Since type AB blood has no antibodies against the other blood types, a person with type AB blood can receive any type of blood if needed, but may only donate blood to other type AB recipients. </li></ul></ul>
  7. 7. Type O Blood <ul><li>Type O blood has neither an A or a B marker and contains both anti-A AND anti-B antibodies. </li></ul><ul><li>Because type O blood does not have either marker, it will not react with anti-A or anti-B antibodies so a person with type O blood may donate blood to any other blood types. For this reason type O blood is known as the universal donor . </li></ul><ul><li>Type O will attack all other blood types (A,B, & AB) so a person with type O blood may only receive blood from another person with type O blood. </li></ul>
  8. 8. Diagram of how different blood types may donate:
  9. 9. The Rh Factor <ul><li>A person with the Rh factor on his or her red blood cells is said to be Rh-positive (Rh+). </li></ul><ul><ul><ul><li>Since this person has the factor, he or she will not make anti-Rh antibodies. </li></ul></ul></ul><ul><li>A person with out the Rh factor on their red blood cells is said to be Rh-Negative (Rh-). </li></ul><ul><ul><ul><li>This person WILL produce anti-Rh antibodies. </li></ul></ul></ul><ul><li>Therefore, an Rh+ person may receive both an Rh+ and an Rh- transfussion, but an Rh- person can only receive Rh- blood. </li></ul>

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