Deck 9: Donor Selection and Phlebotomy

Question 1

How long must a donor wait to donate red blood cells again following a 2-unit red blood cell apheresis donation?

A) 56 days
B) 4 weeks
C) 10 weeks
D) 16 weeks

Answer 1

D
A 16-week deferral period is required following a 2-unit red blood cell apheresis donation.

Question 2

Autologous donors may not donate if they:

A) have a positive test for syphilis.
B) are on antibiotics for an infection.
C) are taking aspirin.
D) are over 65 years old.

Answer 2

B
A risk of bacteremia would cause the autologous donor to be deferred.

Question 3

During the donor screening process, the potential donor's blood drop sinks to the bottom of the copper sulfate solution within 15 seconds. What is the interpretation of this test?

A) The hemoglobin is within limits; however, the hematocrit must be checked.
B) The donor has an acceptable hemoglobin and hematocrit to donate.
C) The donor is temporarily deferred.
D) The specific gravity of the copper sulfate is incorrect.

Answer 3

B
Using the specific gravity of a copper sulfate solution is a screening method to determine whether the hemoglobin and hematocrit are within limits. If the blood drop does not sink within 15 seconds, the donor's hemoglobin or hematocrit should be verified with a more precise measurement.

Question 4

If a prospective donor has participated in a plasmapheresis program, how long must he or she wait to donate whole blood?

A) 56 days
B) 48 hours
C) 24 hours
D) 4 weeks

Question 5

Which type of autologous donation procedure is the most common for most types of surgery?

A) Preoperative hemodilution
B) Postoperative salvage
C) Intraoperative blood salvage
D) Preoperative donation

Question 6

Which of the following contributes to permanent rejection status of a donor?

A) A tattoo 5 months previously
B) Contact with a patient with viral hepatitis
C) Two units of blood transfused 4 months previously
D) Confirmed positive test for hepatitis B surface antigen 10 years previously

Question 7

Blood collected from a therapeutic phlebotomy is:

A) acceptable for inventory under certain Food and Drug Administration guidelines.
B) unacceptable for inventory.
C) acceptable if the "volunteer donor" label is removed.
D) acceptable if the patient meets all regular donor criteria.

Question 8

Which of the following is not a cause for temporary deferment of a whole blood donor?

A) Aspirin ingestion 12 hours previously
B) Hepatitis B immunoglobulin taken 4 weeks previously
C) Oral polio vaccine taken 1 week previously
D) Rubella injection 1 week previously

Question 9

Following donation, how long does it take to replace the fluid lost from giving whole blood?

A) 3 hours
B) 12 hours
C) 48 hours
D) 72 hours

Question 10

What is the minimum hemoglobin level for a potential allogeneic donor?

A) 11 g/dL
B) 12 g/dL
C) 12.5 g/dL
D) 14 g/dL

Question 11

A 58-year-old woman revealed that she had experimented with intravenous drugs as a teenager. What would be the acceptable deferral period, if any, for this potential donor?

A) She is an acceptable donor because testing will pick up evidence of hepatitis.
B) She will need to be deferred for 12 months.
C) She is an acceptable donor if she has had the hepatitis B vaccine.
D) She is deferred.

Question 12

How often can a person donate a unit of whole blood for a directed donation?

A) 8 weeks
B) 2 weeks
C) 48 hours
D) 24 hours

Question 13

Allogeneic whole blood donors may donate every __________ days.

A) 24
B) 36
C) 56
D) 72

Question 14

Which one of the following histories represents an acceptable donor? Blood Pulse
Hematocrit Pressure (mm Hg) Temperature (beats/min) Age

A) 39 110/70 99.8° F 75 40
B) 37 136/86 98.6° F 80 18
C) 41 90/60 99.4° F 65 65
D) 45 185/90 98.6° F 78 50

Question 15

It is necessary to mix the unit frequently during the donation process to:

A) avoid blood clots by mixing the anticoagulant with the blood.
B) suspend the platelets throughout the unit.
C) determine whether the volume is acceptable.
D) allow the donation process to go more quickly.