1613306
Descrição
Quiz por Michelle Rondeau, atualizado more than 1 year ago
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Criado por Michelle Rondeau
aproximadamente 10 anos atrás
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Questão 1
Questão
What is the purpose of Coombs control cells?
Responda
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To ensure that AHG tests with negative results are not the false negatives
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To ensure that washing removed all unbound antibody
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To ensure that AHG was not omitted or inactivated
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All of the above
Questão 2
Questão
What is a positive DAT?
Responda
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In vitro sensitization of RBC with antigen
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In vitro sensitization of RBC with antibody
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In vivo sensitization of RBC with antibody
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In vivo sensitization of RBC with antigen
Questão 3
Questão
A positive autocontrol in antibody detection procedures is usually indicative of:
Responda
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Inadequate washing
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Positive DAT
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Positive IAT
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two of the above
Questão 4
Questão
Why is it important to match the lot number on the panel cells?
Responda
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The ABO group will change from lot to lot
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Pattern of reactions will change from lot to lot
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It is a requirement of the FDA
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All of the above
Questão 5
Questão
In interpreting an antibody screen, which of the following questions might be asked to decipher the class of antibody?
Responda
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Is the autologous control positive or negative?
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Is hemolysis present?
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In what phase did the reaction occur?
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Is rouleaux present?
Questão 6
Questão
What is an elution?
Responda
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a technique used to dissociate IgM antibodies from sensitized RBCs
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a technique used to dissociate IgG antibodies from sensitized RBCs
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a technique used to reduce the zeta potential enhancing antigen binding
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none of the above
Questão 7
Questão
What is tested in an antibody screen?
Responda
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Patient red cells are tested against group O reagent screening cells
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Patient serum is tested against group AB reagent screening cells
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Patient serum is tested against group O reagent screening cells
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Patient serum is tested against group A reagent screening cells
Questão 8
Questão
What might a positive antibody screen and a negative autocontrol indicate?
Responda
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An alloantibody is coating donor cells after a transfusion
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An autoantibody has been detected
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An alloantibody has been detected
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Drug-induced antibody reacting with patient cells.
Questão 9
Questão
When might you suspect multiple antibodies in a patient's serum?
Responda
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Pattern of reactivity not fitting a single antibody
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Variation in phase of reactivity
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Variation in antibody reactivity strength
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All of the above
Questão 10
Questão
One drop of Coombs control cells was added to a negative antibody screen. No agglutination was observed after centrifugation. What course of action is taken?
Responda
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Report negative result
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Report inconclusive result
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Repeat the test
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Add one more drop of check cells and recentrifuge
Questão 11
Questão
What is the shipping temp requirement for plasma?
Responda
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1 to 6 degree F
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1 to 6 degree C
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-18 or higher degree F
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-18 or lower degree C
Questão 12
Questão
Which of the following may not be used as a patient identifier?
Responda
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Patient's full name
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Patients date of birth
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Patients medical record number
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Patients room number
Questão 13
Questão
Which of the following is not an enhancement media?
Responda
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Albumin
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Low Ionic Strength Solution (LISS)
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Normal Saline
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Polyethylene glycol
Questão 14
Questão
Additive solutions are approved for storage of red blood cells for how many days?
Responda
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21
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42
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35
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7
Questão 15
Questão
What is the current storage time and storage temp for platelet concentrates and apheresis platelet components?
Responda
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5 days at 1 to 6 degrees C
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5 days at 24 to 27 degrees C
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5 days at 20 to 24 degrees C
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7 days at 22 to 24 degrees C
Questão 16
Questão
Whole blood and RBC units are stored at what temperature?
Responda
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1 to 6 C
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20 to 24 C
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37 C
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24 to 27 C
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