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Blood bank - Transfusion Practice Question Pool Questions with 100% correct answers
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Blood bank - Transfusion Practiceb
Each unit of whole blood or rbcs will increase the hematocrit 3%-5%, so 2
✅✅
units of rbcs will increase the hematocrit by twice as must as 1 unit of whole
blood - -How would the hematocrit of a patient with chronic anemia be
affected by the transfusion of a unit of Whole Blood containing 475 mL of
blood, vs 2 units of Red Blood Cells each with a total volume of 250 mL?
a. patient's hematocrit would be equally affected by the Whole Blood or the
Red Blood cells
b. Red blood cells would provide twice the increment in hematocrit as the
whole blood
c. whole blood would provide twice the increment in hematocrit as the red
blood cells
d. whole blood would provide a change in hematocrit slightly less than the red
blood cells
c
For emergency transfusions, group O-rbc units should be used. - ✅✅ -After
checking the inventory, it was noted that there were no units on the shelf
marked "May issue as Uncrossmatched: For Emergency Only". Which of the
following should be placed on this shelf?
a. 1 unit of each of the ABO blood groups
b. units of group O, Rh-positive whole blood
c. units of group O, Rh-negative red blood cells
d. any units that are expiring at midnight
d
Granulocyte transfusions may be indicated for severely neutropenic patients
✅✅
with infection not controlled by antibiotic therapy, who are expected to recover
bone marrow production of white cells. - -The primary indication for
granulocyte transfusion is:
a. prophylactic treatment for infection
,b. additional supportive therapy in those patients who are responsive to
antibiotic therapy
c. clinical situations where bone marrow recovery is not anticipated
d. severe neutropenia with an infection that is nonresponsive to antibiotic
therapy
b
✅✅
Each unit of rbcs is expected to increase the hemoglobin level by 1-1.5 g/dl
(10-15 g/L). - -A 42 yr old male of average body mass has a history of
chronic anemia requiring transfusion support. Two units of red blood cells are
transfused. If the pretransfusion hemoglobin was 7.0 g/dl (70g/L), the
expected posttransfusion hemoglobin concentration should be:
a. 8.0 g/dl (80g/L)
b. 9.0 g/dl (90g/L)
c. 10.0 g/dl (100 g/L)
d. 11.0 g/dl (110 g/L)
b
✅✅
Each unit of rbcs is expected to increase the hematocrit level 3%-5%, so it
would take 2 units to raise the level 6%. - -How many units of red blood
cells are required to raise the hematocrit of a 70 kg nonbleeding man from
24% to 30%?
a. 1
b. 2
c. 3
d. 4
c
CMV-seronegative or leukoreduced blood products should be administered to
✅✅
immunocompromised patients, including bone marrow and hematopoietic cell
transplant recipients. - -For which of the following transfusion candidates
would CMV-seronegative blood be most likely indicated?
a. renal dialysis patients
b. sickle cell patient
, c. bone marrow and hematopoietic cell transplant recipients
d. CMV-seropositive patients
b
✅✅
Cryoprecipitate contains ABO antibodies so one should consider giving ABO
compatible, especially when infusing large volumes. - -Although ABO
compatibility is preferred, ABO incompatible product may be administered
when transfusing:
a. Single-Donor Plasma
b. Cryoprecipitated AHF
c. FFP
d. Granulocytes
d
Class I HLA antigens on platelets are a known cause for platelet
✅✅
refractoriness. Leukoreduction of blood products is used as a mechanism to
reduce or prevent patients from developing antibodies. - -Transfusion of
plateletpheresis products from HLA-compatible donors is the preferred
treatment:
a. recently diagnosed cases of TTP with severe thrombocytopenia
b. acute leukemia in relapse with neutropenia, thrombocytopenia and sepsis
c. immune thrombocytopenic purpura
d. severely thrombocytopenic patients, known to be refractory to random
donor platelets
a
Patients with IgA deficiency who have had anaphylactic transfusion reactions
should receive washed rbcs. Anaphylactic reactions are typically caused by
✅✅
anti-IgA in the recipient. Washing removes plasma IgA from the donor unit
cells - -Washed red blood cells are indicated in which of the following
situations?
a. an IgA-deficient patient with a history of transfusion-associated anaphylaxis
b. a pregnant woman with a history of hemolytic disease of the newborn
c. a patient with a positive DAT and red cell autoantibody
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