Medical Technologist Test Blood Banking 2

Question 1

Hemolytic disease of the fetus and newborn (HDFN) is MOST commonly caused by antibody to which antigen?

Accepted Answer

Rh D antigen

Answer

ABO antigens

Answer

Kell antigen

Answer

Duffy antigen

Question 2

What is the purpose of the antibody screen (indirect antiglobulin test) before transfusion?

Accepted Answer

Detect unexpected alloantibodies in patient serum

Answer

Determine patient's ABO type

Answer

Confirm compatibility by mixing donor and patient cells

Answer

Identify bacterial contamination in blood product

Question 3

Irradiation of blood products is performed primarily to prevent which transfusion complication?

Accepted Answer

Transfusion-associated graft-versus-host disease (TA-GvHD)

Answer

Bacterial contamination

Answer

Febrile non-hemolytic transfusion reaction

Answer

Transfusion-related acute lung injury (TRALI)

Question 4

Platelets are stored at which temperature with continuous agitation?

Accepted Answer

20–24°C

Answer

1–6°C

Answer

–18°C or colder

Answer

37°C

Question 5

A positive crossmatch occurs when donor red cells are incompatible with which patient component?

Accepted Answer

Patient serum or plasma

Answer

Donor plasma

Answer

Patient red blood cells

Answer

Patient platelets

Question 6

Which transfusion reaction presents with fever, flank pain, hemoglobinuria, and hypotension within minutes of starting transfusion?

Accepted Answer

Acute hemolytic transfusion reaction

Answer

Febrile non-hemolytic reaction

Answer

Allergic/urticarial reaction

Answer

Transfusion-associated circulatory overload (TACO)