
Quiz IH 2023
Authored by Norhaza Abdul Rahim
Other
Professional Development
Used 2+ times

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8 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • Ungraded
The immediate-spin (IS) crossmatch is used to detect ABO incompatibility between donor red cells (RBCs) and the serum of the intended recipient
Yes
No
Not sure
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What are mixed fields in the forward grouping usually caused by?
Group O transfusion
A3 or B3 phenotype
Stem cell transplant
All of the above
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is usually the cause of missing or weak antibodies in the reverse grouping?
Elderly patient
Newborn
immunocompromised
All of the above
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
In determining the phenotype for the ABO blood system:
O is dominant over A
A is dominant over B
O is recessive
None of the above
5.
MULTIPLE CHOICE QUESTION
30 sec • Ungraded
Crossmatch of the eluate with A group RBC was incompatible, implying that the incompatibility was due to anti-A antibody
True
False
Not sure
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
A patient has a positive antibody screen and positive results against cells in the antibody panel. The patient specimen is retested with antibody panel cells that have been treated with the enzyme "papain." The antibody no longer reacts against cells in the antibody panel. Which of the following antibodies is most consistent with these results?
anti-D
anti-M
anti-K
anti-Lea
Answer explanation
enhanced by enzyme
Rh, Kidd, Lewis, P1pk, I
destroyed by enzyme
MNS destroyed, Duffy, Xga
Unaffected
K
7.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
At the indirect antiglobulin phase of testing, there is no agglutination between patient serum and screening cells. One of 3 donor units was incompatible.The most probable explanation for these findings is/are that the:
A) Donor cells with positive DAT
B) patient has an antibody directed against a low incidence antigen
C) donor has a positive antibody screen
D) A and B
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