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10 Cards in this Set
- Front
- Back
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What are the six steps in pre-transfusion testing? |
- patient specimen collection - ab screening - ab identification - checking - selection - crossmatching |
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What are the characteristics of clinically significant antibodies? |
- antibodies that are reactive at 37 degree Celcius -and/or in the antihuman globulin test - and are known to have caused a transfusion reaction - or unacceptably short survival of transfused RBC |
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Compare alloantibody and autoantibody |
alloantibody is antibody against RBC antigen that is not present on patient's own RBC while autoantibody is antibody against RBC antigens present on patient's RBC |
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What is the purpose of Anti-human Globulin test? |
It is to check the compatibility between donar red cells and recipient's serum. |
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Given a patient with B blood group, what is the second best choice of FFP to be transfused? |
AB |
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State the 3 types of crossmatching |
- Immediate Spin - Electronic (Computer) - Serologic (antiglobulin) crossmatch |
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Why immediate spin is used are the primary crossmatching test? |
Because it saves time as it is super quick and it saves reagent. It also decreases workload. |
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State 3 causes of positive crossmatching. |
- Incorrect ABO grouping of the patient and donor - An alloantibody in the patient's serum reacting with the corresponding antigen on the donor RBC - Contaminants in the test system |
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Given a child patient with AB blood group, what is the second best choice of red cells to be transfused? |
A or B |
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Among children of B blood group, what is the second best choice of platelet to be transfused? |
A or O+ |
