Donor Screening and Component Preparation

Question 1

What is the minimum age for donating blood?

Answer 1

17 years

Question 2

What is the minimum weight requirement for donating a standard unit of blood?

Answer 2

110 pounds

Question 3

A potential donor yields a blood pressure of 190/100 while undergoing a physical examination. What is the result of this finding?

Answer 3

Evaluation by blood bank medical director

Question 4

A person comes in to donate a unit of blood, and when the donor rolls up his sleeve for a blood pressure reading, the donor room technician notices a tattoo. When asked about the time the tattoo was made the donor answers, “five years ago.” Is this donor approved for a blood donation?

Answer 4

Donor is accepted

Question 5

A multiparous woman wishing to donate blood states she was given a blood transfusion 6 months ago during a difficult delivery of her third child. Is she approved for donation?

Answer 5

Donor is deferred for 6 months

Question 6

What effect does aspirin have on a platelet pheresis procedure?

Answer 6

Causes a decrease in platelet function

Question 7

Why might a donor with a history of epileptic seizures be deferred or might otherwise require approval from the blood bank director?

Answer 7

To alleviate the possibility of serious donor reaction

Question 8

The influenza (live virus) carries a deferral of how long?

Answer 8

2 weeks

Question 9

What possible disease transmission is the cause for rejecting a donor given growth hormone?

Answer 9

Creutzfeldt-Jakob disease

Question 10

Why is the informed consent response not reviewed at the donor registration site, but instead in donor processing where blood pressure, temperature, hemoglobin, etc. screening is done?

Answer 10

to alleviate any embarrassment of the donor to other donors and staff.

Question 11

All of the following are measured after pheresis donation except:

Answer 11

Serum protein

Question 12

Mrs. Jones donated 2 autologous units for a hysterectomy to be performed in 4 weeks. This is referred to as a ______ donation.

Answer 12

Predeposit

Question 13

What oral therapy is recommended for patients who are making frequent predeposit blood donations?

Answer 13

Iron

Question 14

What type of blood donation is used particularly with cardiopulmonary bypass procedures?

Answer 14

Immediate preoperative hemodilution

Question 15

What is the cause of a hematoma in the phlebotomy process?

Answer 15

The needle has gone through the vein and punctured the back wall

Question 16

In processing of donor units, what reagent is optional?

Answer 16

A2 cells

Question 17

All of the following are laboratory methods used to detect HBsAg except:

Answer 17

HPLC

Question 18

What does anti-HBc detect?

Answer 18

The core protein on the Hepatitis B virus

Question 19

All of the following is included on the label affixed to the donor unit, except:

Answer 19

Date of collection

Question 20

How are red blood cells prepared from a donor whole blood unit?

Answer 20

80% plasma is removed

Question 21

Red blood cells that have been irradiated are indicated in _______ patients.

Answer 21

Bone marrow transplant patients

Question 22

Which leukocyte-reduction method yields the highest reduction in white blood cells and platelets?

Answer 22

Selective absorption filter

Question 23

All of the following tests are done on postdeglycerolized units except:

Answer 23

IAT

Question 24

Single-donor platelets are produced by:

Answer 24

Pheresis procedures

Question 25

Random platelets from whole blood must be prepared within how long of collection?

Answer 25

6 hours

Question 26

What is the storage temperature of fresh frozen plasma (FFP)?

Answer 26

-18 degrees C

Question 27

What is the concentration of AHF (factor VIII) in cryoprecipitate?

Answer 27

80 units of activity

Question 28

What may cause a decreased factor VIII activity when preparing cryoprecipitate?

Answer 28

elevated temperatures (>4 degrees C)

Question 29

What product is used to treat persons at risk for spontaneous thrombosis?

Answer 29

Antithrombin III concentrate

Question 30

What is the primary immunoglobulin contained in immune serum globulin (ISG)?

Answer 30

IgG

Question 31

What is the therapeutic use of immune serum globulin (ISG)?

Answer 31

Immunodeficiency