BB04 - Pretransfusion testing, alloantibody ID, QA

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  1. Two units of blood have been requested for a patient with 2 antibodies. The negative frequency of oneantigen is 70% and for the other antigen is 45%. How many units should you screen?

    A) 4
    B) 10
    C) 13
    D) 7
    A) 4
    (this multiple choice question has been scrambled)
  2. Six units were crossmatched for a patient with a negative antibody screen. One of the units was incompatible, reacting 3+ at the antiglobulin phase. Which of the following antibodies could most likely be the cause of this reaction?

    A) Anti-Kpa
    B) Anti-Kell
    C) Anti-Fya
    D) Anti-Jkb
    • A) Anti-Kpa
    • jQuery1101027038599886690995_1484012269463?NOT SURE!!!
  3. You have just received a crossmatch order and sample for testing. Which should you do first?

    A) Check the patient's record for previous results
    B) Set up the antibody screen
    C) Check the sample identification against the order form
    D) Perform ABO and Rh typing
    C) Check the sample identification against the order form
    (this multiple choice question has been scrambled)
  4. Which is true regarding initial compatibility testing for an infant less than 4 months old?

    A) Antibody detection testing can be performed using maternal or infant's plasma
    B) ABO forward and reverse grouping must be performed
    C) Just give O negative, ABO and Rh typing is not necessary
    d) none of the above
    A) Antibody detection testing can be performed using maternal or infant's plasma
    (this multiple choice question has been scrambled)
  5. Compatibility testing:

    A) Detects most errors in ABO grouping
    B) Proves that the donor's plasma is free of all unexpected antibodies
    C) Ensures complete safety of the transfusion
    D) Always detects antibodies to rare donor antigens
    A) Detects most errors in ABO grouping
    (this multiple choice question has been scrambled)
  6. What type of blood should be transfused in an emergency when there is no time to type the patient?

    A) AB negative packed cells
    B) Only crossmatched blood units
    C) O positive or O negative whole blood
    D) O positive or O negative packed cells
    D) O positive or O negative packed cells
    (this multiple choice question has been scrambled)
  7. (T/F) A positive DAT on the donor blood unit can cause an incompatible AHG crossmatch.
    True
  8. (T/F) An AHG crossmatch must be performed when the patient has a clinically significant antibody.
    True
  9. (T/F) An immediate spin crossmatch is a check on ABO compatibility.
    True
  10. A positive result in the Immediate Spin (IS) Crossmatch may be resolved by:

    A) Repeating the IS Crossmatch with a potentiator (eg.LISS)
    B) Investigating the patient's plasma for cold reactive antibody
    C) Performing a direct antiglobulin test (DAT) on the donor unit
    d) None of the above
    B) Investigating the patient's plasma for cold reactive antibody
    (this multiple choice question has been scrambled)
  11. Possible advantages of the Gel over LISS IAT tube testing include:

    A) Inclusion of a check cell that assures validity of IAT result
    B) Faster saline wash cycle time
    C) Less incubation time at 37C compared to LISS IAT in tubes
    D) More sensitive than LISS IAT
    D) More sensitive than LISS IAT
    (this multiple choice question has been scrambled)
  12. Effective blood utilization is evidenced by:

    A) Increasing percentage of outdated blood
    B) Large inventory of blood that allows more units to be crossmatched per patient
    C) Lower crossmatch to transfusion (C/T) ratio
    D) Only a type and screen is performed for patients with clinically significant antibodies
    C) Lower crossmatch to transfusion (C/T) ratio
    (this multiple choice question has been scrambled)
  13. (T/F) If your laboratory computer system is validated, the computer crossmatch takes the place of the AHG crossmatch for all patients.
    False
  14. A patient developed anti-S four years ago after blood transfusion. The current antibody screen is negative.Which of the following procedures applies to the current crossmatch?

    A) Crossmatch random donor units with the patient's specimen and release only the unitscompatible at AHG
    B) Antigen type donor units for S antigen and AHG crossmatch only the S negative units
    C) Emergency released blood that is untested for S antigen CANNOT be used
    D) Computer crossmatch S negative donor units
    B) Antigen type donor units for S antigen and AHG crossmatch only the S negative units
    (this multiple choice question has been scrambled)
  15. Autologous blood donation means:

    A) Patient donated blood for him/herself
    B) Person donated for random use
    C) Person donated blood for a relative or friend
    d) None of the above
    A) Patient donated blood for him/herself
    (this multiple choice question has been scrambled)
  16. Red blood cell alloantibodies that were previously identified in a patient's antibody workup at your hospital, but now are undetectable:

    A) Are so low titer that they pose little risk of causing delayed hemolytic transfusion reaction
    B) Can always be detected by a more sensitive antibody screening technique.
    C) Can be known about before transfusion by checking the patient's previous history record.
    D) Are usually IgG type alloantibodies of limited clinical significance
    C) Can be known about before transfusion by checking the patient's previous history record.
    (this multiple choice question has been scrambled)
  17. (T/F) An imediate spin (IS) or electronic crossmatch may be performed if the patient's antibody screen isnegative and there is no history of clinically significant antibodies.
    True
  18. An example of a remedial action is:

    A) Applying the problem-solving process
    B) Addressing the immediate problem
    C) Search for root cause of problem
    D) Starting a process improvement team
    B) Addressing the immediate problem
    (this multiple choice question has been scrambled)
  19. (T/F) Quality Systems Essentials (QSEs) are applied to the blood bank's path of workflow
    True
  20. (T/F) A Quality Management System (QMS) is the same as compliance.
    False
  21. Match the Quality Management term on the left with the corresponding example on the right. Use eachanswer only once.

    +External Audit
    +QSE for Personnel
    +Validation
    +Process Improvement
    +Records of Error and Accident Occurence

    -Quality Team
    -Non-Conformance Document
    -Essential for new lab test implementation
    -JCAHO Inspection
    -Competancy Skill Assessment
    • External Audit: JCAHO Inspection
    • QSE for Personnel: Competancy Skill Assessment
    • Validation: Essential for new lab test impl
    • Process Improvement: Quality Team
    • Records of Error: Non-Conformance Document

Card Set Information

Author:
victimsofadown
ID:
327294
Filename:
BB04 - Pretransfusion testing, alloantibody ID, QA
Updated:
2017-01-10 02:12:58
Tags:
BB04 Pretransfusion testing alloantibody ID QA
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TESTS,BB
Description:
BB04 - Pretransfusion testing, alloantibody ID, QA
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