Question 1

Why are plastic overwraps recommended when thawing FFP and CRYO?

Accepted Answer

A plastic overwrap or keeping ports above the water level are acceptable methods for prevention of bacterial contamination from the water bath.

Question 2

Rejuvenation of a unit of RBCs is a method used to:

Accepted Answer

The additives in rejuvenation solutions increase the 2,3 DPG and ATP levels of an expired unit and allow for freezing within 3 days.

Question 3

Whole blood collected from a donor should remain at what temperature before the separation and preparation of platelet concentrates?

Accepted Answer

Platelets must be separated from whole blood units before storage at 1° to 6° C.

Question 4

MATCHING
Match the correct expiration limit with each red blood cell product.Each choice may be used more than once or not at all.
-AS-3 or AS-2

Accepted Answer

CRed blood cell products preserved with AS-3 or AS-2 additive solutions have an expiration limit of 42 days. These additive solutions are designed to extend the shelf life of stored red blood cells by providing them with necessary nutrients and reducing the rate of hemolysis.

Question 5

Select an important determination of platelet viability following the recommended storage interval.

Accepted Answer

The platelet pH should be 6.2 or above during the storage of platelets.

Question 6

MATCHING
Match the correct expiration limit with each red blood cell product.Each choice may be used more than once or not at all.
-Frozen

Accepted Answer

Frozen red blood cell products can be stored for up to 10 years when properly processed and stored at the correct temperatures.

Question 7

What is the correct storage temperature and time limit for pooled platelets?

Accepted Answer

Following pooling,products that are stored at room temperature must be transfused within 4 hours.

Question 8

MATCHING
Match the correct expiration limit with each red blood cell product.Each choice may be used more than once or not at all.
-Irradiated

Accepted Answer

Irradiated red blood cells have an expiration limit of 28 days from the date of irradiation or the original expiration date, whichever comes first, to minimize the risk of transfusion-associated graft-versus-host disease.

Question 9

Platelet concentrates that are prepared from whole blood have a minimum quality control limit of __________ platelets in __________ of the units tested.

Accepted Answer

Three-fourths of the units tested must meet the minimum platelet count of 5.5 × 10¹⁰.

Question 10

Following a platelet concentrate transfusion,a patient did not obtain the calculated corrected count increment that was expected.Select the possible reason(s)the increment increase did not occur.

Accepted Answer

Refractoriness or poor response to platelet transfusions can be caused by fever,active bleeding,or leukocyte antibodies.

Question 11

MATCHING
Match the correct expiration limit with each red blood cell product.Each choice may be used more than once or not at all.
-CPDA-1

Accepted Answer

CPDA-1 (Citrate Phosphate Dextrose Adenine) is an anticoagulant-preservative solution used for storing red blood cells, and it allows for a storage period of 35 days.

Question 12

A unit of CPDA-1 RBCs,expiring in 35 days,is split using a sterile collection device to prepare pediatric units.What is the expiration date for each split unit?

Accepted Answer

The sterile docking device maintains the original expiration of the unit.

Question 13

What patient population needs leukocyte-reduced red blood cells?

Accepted Answer

Avoiding febrile transfusion reactions is an important reason in administering leukocyte-reduced blood products.

Question 14

MATCHING
Match the correct expiration limit with each red blood cell product.Each choice may be used more than once or not at all.
-CPD

Accepted Answer

CPD (Citrate Phosphate Dextrose) preserved red blood cells have an expiration limit of 21 days.

Question 15

Once the cryoprecipitate is removed from fresh frozen plasma,the remaining plasma can be refrozen and stored at -18° C for 1 year from collection.Which of the following clinical conditions can use this product?

Accepted Answer

Without the factor VIII that is removed as cryoprecipitate,the plasma is useful in patients that have thrombotic thrombocytopenic purpura.

Question 16

To prevent graft-versus-host disease,blood components prepared for a fetus that needs an intrauterine transfusion should be:

Accepted Answer

Irradiation prevents the leukocytes from dividing and causing a graft-versus-host reaction.

Question 17

What is the minimum acceptable storage temperature for frozen red blood cells?

Accepted Answer

Frozen red blood cells must be stored at -65° C or lower.

Question 18

Plasma,frozen within 24 hours of collection (PF24),has similar coagulation factors as which of the following plasma products?

Accepted Answer

FFP contains both labile and stable coagulation factors.Labile factors may be somewhat reduced in PF24.

Question 19

Addition of which of the following will increase the shelf life of red blood cells?

Accepted Answer

The additive solution increases the shelf life of RBC units to 42 days.

Question 20

The temperature of a RBC unit shipment from the local blood center was recorded as 8° C upon arrival at the hospital.What is the correct course of action?

Accepted Answer

The shipment temperature of red blood cells should be between 1° and 10° C,and these units are acceptable to use.

Quiz 15: Blood Component Preparation and Therapy

Why are plastic overwraps recommended when thawing FFP and CRYO?

Rejuvenation of a unit of RBCs is a method used to:

Whole blood collected from a donor should remain at what temperature before the separation and preparation of platelet concentrates?

MATCHING Match the correct expiration limit with each red blood cell product.Each choice may be used more than once or not at all. -AS-3 or AS-2

Select an important determination of platelet viability following the recommended storage interval.

MATCHING Match the correct expiration limit with each red blood cell product.Each choice may be used more than once or not at all. -Frozen

What is the correct storage temperature and time limit for pooled platelets?

MATCHING Match the correct expiration limit with each red blood cell product.Each choice may be used more than once or not at all. -Irradiated

Platelet concentrates that are prepared from whole blood have a minimum quality control limit of platelets in of the units tested.

Following a platelet concentrate transfusion,a patient did not obtain the calculated corrected count increment that was expected.Select the possible reason(s) the increment increase did not occur.

MATCHING Match the correct expiration limit with each red blood cell product.Each choice may be used more than once or not at all. -CPDA-1