AND A+ GRADED ANSWERS
Which of the following viruses resides exclusively in leukocytes?
A. CMV
B. HIV
C. HBV
D. HCV -
Answer A. CMV
Blood needs to be prepared for intrauterine transfusion of a fetus with severe HDN. The
red blood cell unit selected is compatible with the mother's serum and has been leuko-
depleted. An additional step that must be taken before transfusion is to
A. add pooled platelets and fresh frozen plasma
B. check that the RBC group is consistent with the father's
C. irradiate the RBCs before infusion
D. test the RBC unit with the neonate's eluate -
Answer C. irradiate the RBCs before infusion
According to AABB standards, FFP must be infused within what period of time following
thawing?
A. 24 hours
B. 36 hours
C. 48 hours
D. 72 hours -
Answer 24 hours
,The optimum storage temperature for platelets is
A. -20 degrees C
B. -12 degrees C
C. 4 degrees C
D. 22 degrees C -
Answer 22 degrees C
Cryoprecipitate if maintained in the frozen state at -18 degrees C or below, has a shelf
life of
A. 42 days
B. 6 months
C. 12 months
D. 36 months -
Answer 12 months
Irradiation of a unit of Red Blood Cells is done to prevent the replication of donor
A. granulocytes
B. lymphocytes
C. red cells
D. platelets -
Answer lymphocytes
The most effective component to treat a patient with fibrinogen deficiency
A. FFP
B. platelets
C. fresh whole blood
, D. cyroprecipitate -
Answer cyroprecipitate
Which of the following is proper procedure for preparation of platelets from whole
blood?
A. light spin followed by a hard spin
B. light spin followed by 2 hard spins
C. 2 light spins
D. hard spin followed by a light spin -
Answer light spin followed by a hard spin
Most blood group antibodies are of what immunoglobulin classes?
A. IgA and IgD
B. IgA and IgM
C. IgE and IgD
D. IgG and IgM -
Answer IgG and IgM
Which of the following blood groups reacts least strongly with an anti-H produced in an
A1B individual?
A. Group O
B. Group A2B
C. Group A2
D. Group A1 -
Answer group A1
Lectins are useful in determining the cause of abnormal reactions in blood bank
serology. These lectins are frequently labeled as anti-H, anti-A1, etc. The nature of
these lectins is explained by which of the following?