MLT COMPREHENSIVE EXAM KIT24

Question 1 of 40

1. Question

1 points

The usual consequence(s) of a delayed hemolytic transfusion reaction is/are

Shortened erythrocyte survival rate
Intravascular destruction of erythrocytes
Extravascular destruction of erythrocytes
A positive DAT
All above except b

Question 2 of 40

2. Question

1 points

The most appropriate laboratory test for early detection of acute hemolysis is

A visual inspection for free plasma hemoglobin
Plasma haptoglobin concentration
Examination for hematuria
Serum bilirubin concentration

Question 3 of 40

3. Question

1 points

A patient received 2 units of packed RBCs and had a delayed transfusion reaction. Antibody screening records indicate that no agglutination was detected during testing except after addition of IgG sensitized cells (check cells. Repeat testing of the pre-transfusion specimen detected an antibody at the antiglobulin phase. What is a possible explanation?

Red cells were overwashed
Centrifugation time was prolonged
Patient's serum was omitted from the orignal testing
Antiglobulin reagent was neutralized

Question 4 of 40

4. Question

1 points

Which of the following describes intravascular HTR?

Mild itching and hives
Donor antibodies to recipient HLA or neutrophil antigens
Preformed recipient antibodies to donor RBCs
Preformed recipient antibodies to donor WBCs or platelets
Antiglobulin reagent was neutralized

Question 5 of 40

5. Question

1 points

Which of the following describes Urticarial transfusion reactions?

Mild itching and hives
Donor antibodies to recipient HLA or neutrophil antigens
Preformed recipient antibodies to donor RBCs
Preformed recipient antibodies to donor WBCs or platelets
IgA deficient recipient with anti-IgA reactis to IgA in donor plasma

Question 6 of 40

6. Question

1 points

Which of the following describes TRALI?

Mild itching and hives
Donor antibodies to recipient HLA or neutrophil antigens
Preformed recipient antibodies to donor RBCs
Preformed recipient antibodies to donor WBCs or platelets
IgA deficient recipient with anti-IgA reactis to IgA in donor plasma

Question 7 of 40

7. Question

1 points

Which of the following describes Anaphylaxis transfusion reactions?

Mild itching and hives
Doonor antibodies to recipient HLA or neutrophil antigens
Preformed recipient antibodies to donor RBCs
Preformed recipient antibodies to donor WBCs or platelets
IgA deficient recipient with anti-IgA reactis to IgA in donor plasma

Question 8 of 40

8. Question

1 points

Which of the following describes Febrile (non-hemolytic transfusion reactions?

Mild itching and hives
Donor antibodies to recipient HLA or neutrophil antigens
Preformed recipient antibodies to donor RBCs
Preformed recipient antibodies to donor WBCs or platelets
IgA deficient recipient with anti-IgA reacts to IgA in donor plasma

Question 9 of 40

9. Question

1 points

The acceptable interval between homologous whole blood (single unit donation is

4 weeks
6 weeks
8 weeks
10 weeks
12 weeks

Question 10 of 40

10. Question

1 points

Which of the following would cause an individual to be rejected as a blood donor?

Pulse of 90 beats per minute
Weight of 105 pounds
Hemoglobin of 13.1 g/dl
Oral temperature of 99.5 degrees F
None

Question 11 of 40

11. Question

1 points

Donor deferral for one year occurs for each of the following EXCEPT

Travel to endemic area for malaria
Tattoo
Recipient of blood or blood product
More than 72 hours in a correctional institution
Viral hepatitis

Question 12 of 40

12. Question

1 points

All of the following are reasons for indefinite donor deferral EXCEPT

Needlestick with needle contaminated with blood or body fluid
Babesiosis
Receipt of human growth hormone
Evidence of parenteral drug use

Question 13 of 40

13. Question

1 points

The maximum expiration date on a unit of packed RBCs stored in the refrigerator is

21 days
35 days
42 days
56 days

Question 14 of 40

14. Question

1 points

Platelets are made from a unit of whole blood in the following way:

Hard spin followed by a light spin
Light spin followed by a hard spin
Two hard spins
Two light spins

Question 15 of 40

15. Question

1 points

The criteria for autologous donation is the same as for allogenic donation

True
False

Question 16 of 40

16. Question

1 points

With the exception of frequency of donation, the criteria for apheresis donation is the same as for allogenic donation.

True
False

Question 17 of 40

17. Question

1 points

Which of the following tests are NOT performed routinely on a donor unit of blood?

ABO/Rh type
Antibody screen
DAT
Syphilis testing
Viral disease testing

Question 18 of 40

18. Question

1 points

Autologous units can be stored with allogenic units as long as the label indicates “for autologous use only.”

True
False

Question 19 of 40

19. Question

1 points

What is the benefit of using leuko-reduced RBCs?

Less volume for patient
Cells carry more oxygen
Help prevent bacteremia
Help prevent febrile non-hemolytic reactions

Question 20 of 40

20. Question

1 points

What is the benefit of apheresis platelet collection?

Shorter donation time for donor
Minimized donor exposure for recipient
Increased shelf life of prodcut
All of the above
None of the above
More than one of the above

Question 21 of 40

21. Question

1 points

A unit of RBCs is issued at 9:00 am. At 9:10 am, the unit is returned to the Blood Bank. The container has NOT been entered, and has been refrigerated at 1-6 degrees C during this time span. The best course of action for the technician is to

Culture the unit for bacterial contamination
Discard the unit if not used within 24 hours
Store the unit at room temperature
Record the return and place the unit back into inventory.

Question 22 of 40

22. Question

1 points

According to AABB standards, platelets must be

Gently agitated if stored at room temperature
Separated within 12 hours of whole blood collection
Suspended in sufficient plasma to maintain a pH of 5.0 or lower
Prepared only from whole blood units that have been stored at 4 degrees C for 6 hours.

Question 23 of 40

23. Question

1 points

According to AABB standards, fresh frozen plasma must be infused within this time fram after thawing

24 hours
36 hours
48 hours
72 hours

Question 24 of 40

24. Question

1 points

If the seal is entered on a unit of packed cells stored at 1-6 degrees C, what is the maximum allowable storage period, in hours?

4
6
24
48
72

Question 25 of 40

25. Question

1 points

Which of the following blood components is the best source of fibrinogen for transfusion to a patient with hypofibrinogenemia?

Fresh frozen plasma
Whole blood
Platelets
Cryoprecipitated AHF

Question 26 of 40

26. Question

1 points

A patient has had massive trauma involving replacement of one blood volume with packed cells and volume expanders. She is currently experiencing oozing from mucous membranes and surgical incisions. Laboratory values are as follows: PT: Normal APTT: Normal Bleeding Time: Prolonged Platelet count: 20 x 10 to the 3rd/ul Hemoglobin: 11.4 g/dl What is the component of choice for this patient?

RBCs
Platelets
Cryoprecipitated AHF
Fresh Frozen Plasma
Prothrombin complex

Question 27 of 40

27. Question

1 points

Transfusion of which of the following is needed to help correct hypofibrinogenemia due to DIC?

Whole blood
Fresh frozen plasma
Cryoprecipitated AHF
Platelets

Question 28 of 40

28. Question

1 points

A 24 year old man with severe hemophilia A is involved in an auto accident and is actively bleeding. Factor VIII assay results are 8%. The blood product of choice is

Single donor plasma
Fresh frozen plasma
Whole blood
Cryoprecipitated AHF
Factor VIII concentrate

Question 29 of 40

29. Question

1 points

Which of the following would be a component of choice for treatment of von Willebrand’s disease?

Platelets
Factor IX concentrate
Cryoprecipitated AHF
Fresh frozen plasma

Question 30 of 40

30. Question

1 points

The most important step in the safe administration of blood is to

Perform a careful crossmatch
Take a careful history from the recipient
Exclude disqualified donors
Accurately identify the donor unit and intended recipient

Question 31 of 40

31. Question

1 points

Which of the following is consistent with standard blood bank procedure governing the infusion of fresh frozen plasma?

Only blood group specific plasma may be administered
Group O may be administered to recipients of all blood groups
Group AB may be administered to AB recipients only
Group A may be administered to both A and O recipients

Question 32 of 40

32. Question

1 points

A patient who is group AB, Rh- negative needs 2 units of fresh frozen plasma. Which of the following units of plasma would be MOST acceptable for transfusion?

O Neg
A Neg
B Pos
AB Pos

Question 33 of 40

33. Question

1 points

Fresh frozen plasma from an A Pos donor may be safely transfused to a patient who is

A Neg
B Neg
AB Pos
AB Neg

Question 34 of 40

34. Question

1 points

A patient admitted to the trauma unit requires emergency release of fresh frozen plasma (FFP. His blood donor card states that he is AB Pos. Which of the following blood groups of FFP should be issued?

A
B
AB
O

Question 35 of 40

35. Question

1 points

A 22 year old man is admitted to the ER in shock following massive hemorrhage from knife wounds to his chest and abdomen. An emergency transfusion is required. Which of the following is the product of choice?

O Pos RBCs
O Neg RBCs
O Pos Whole Blood
O Neg Whole Blood

Question 36 of 40

36. Question

1 points

A 29 year old male is hemorrhaging serverely. He is AB Neg. Six units of blood are required STAT. Of the following types available in the blood bank, which would be most preferable for a crossmatch?

AB Pos
A Neg
A Pos
O Neg

Question 37 of 40

37. Question

1 points

AHG reagents, blood typing reagents and antibody screening reagents must be tested each week with QC solutions and cells.

True
False

Question 38 of 40

38. Question

1 points

IgG sensitized cells in antiglobulin procedures serve as a QC check on reagent and procedure.

True
False

Question 39 of 40

39. Question

1 points

Refrigerators, freezers, heating blocks, water baths must undergo daily temperature checks.

True
False

Question 40 of 40

40. Question

1 points

Serofuges/cell washers must have timers and speed regularly check

True
False

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