4.8 Donors Flashcards
Which of the following individuals is acceptable as a blood donor?
A. A 29-year old man who received the hepatitis B vaccine last week
B. A 21 year old woman who had her nose pierced last week
C. A 30 year old man who lived in Zambia for 3 years and returned last month
D. A 54 year old man who tested positive for hepatitis C last year but has no active symptoms of disease
A. A 29-year old man who received the hepatitis B vaccine last week
If the donor is symptom free, there is no deferral period for the hepatitis B vaccine. Persons who have had body piercing are given a 12 month deferral. Persons who lived in an area endemic for malaria or who received antimalarial drugs are deferred for 3 years. A positive test for the hepatitis C virus (HCV) is cause for indefinite deferral.
SITUATION: A 53 year old woman donates blood at her place of employment. She weighs 150 Ib and has a hemoglobin level of 13 g/dL. She is currently on warfarin and vitamin B12. Is she an acceptable donor?
A. Yes
B. No, she is on warfarin
C. Yes, for RBCs only
D. No, her hemoglobin is too low
C. Yes, for RBCs only
Her age and hemoglobin meet donor criteria. However, because she is currently on warfarin, only RBCs can be prepared from her donation.
Which immunization has the longest deferral period?
A. Hepatitis B immune globulin (HBIG)
B. Rubella vaccine
C. Influenza vaccine
D. Yellow fever vaccine
A. Hepatitis B immune globulin (HBIG)
Deferral for HBIG injection is 12 months. Deferral for rubella vaccine is 4 weeks. The deferral period for influenza and yellow fever vaccines is 2 weeks.
The following whole blood donors regularly give blood. Which donor may donate on September 10?
A. A 40 year old woman who last donated on July 23
B. A 28 year old man who had plateletpheresis on August 24
C. A 52 year old man who made an autologous donation on September 9
D. A 23 year old woman who donated blood for her aunt on August 14
B. A 28 year old man who had plateletpheresis on August 24
A plateletpheresis donor must wait at least 48 hours between donations. The waiting period following an autologous donation is at least 3 days. An 8 week interval must pass between all other types of donations.
Which of the following precludes acceptance of a plateletpheresis donor?
A. Platelet count of 75 x 10^9/L in a donor who is a frequent platelet donor
B. Plasma loss of 800 mL from plasmapheresis 1 week ago
C. Platelepheresis performed 4 days ago
D. Aspirin ingested 7 days ago
A. Platelet count of 75 x 10^9/L in a donor who is a frequent platelet donor
To be eligible for plateletpheresis, the platelet count should be greater than 150 x 10^9/L for a frequent platelet donor. Plasma loss exceeding 1,000 mL would be cause for rejection, but not 800 mL. A donor may donate 24 times a year, but not as frequent as once every 2 days in a 7-days period. A donor cannot ingest aspirin within 36 hours of platelet donation.
Which of the following donors could be accepted for whole blood donation?
A. A construction worker who was incarceratedd for opiated abuse
B. A triathlete with a pulse of 45
C. A man who is currently taking finasteride (Propecia)
D. A woman in her 14th week of pregnancy
B. A triathlete with a pulse of 45
Which physical examination result is cause for rejecting a whole blood donor?
A. Weight of 105 lb
B. Pulse of 75
C. Temperature of 37.4C (99.3 F)
D. Diastolic pressure of 110 mm Hg
D. Diastolic pressure of 110 mm Hg
Diastolic pressure must not be higher than 100 mm Hg. Donors weighing less than 110 lb may donate up to 12% of their blood volume (volume = weight in kg/50 x 450 mL)
Which situation is not a cause for indefinite deferral of a donor?
A. Male donor whose father has been diagnosed with Creutzfeldt-Jakob disease (CJD)
B. Donation of a unit of blood that transmitted hepatitis B virus (HBV) to a recipient
C. Donor tested reactive for HBV by nucleic acid testing (NAT)
D. Accidential needstick 1 year ago; negative for infectious disease
D. Accidential needstick 1 year ago; negative for infectious disease
An accidental needlestick would not be a cause for indefinite deferral of a donor. The deferral period is 1 year.
A whole blood donor currently on clopidogrel (Plavix) is precluded from donating which product?
A. Platelets
B. RBCs
C. FFP
D. Cryoprecipitate
A. Platelets
Clopidogrel (Plavix) renders platelets nonfunctional, and therefore potential donors on this medication cannot donate platelets.
How much anticoagulant would have to be removed from the collection bag given a donor who weighs 90 Ib?
A. 12 mL
B. 15 mL
C. 20 mL
D. 23 mL
A. 12 mL
To determine the amount of anticoagulant to remove when the donor is less than 110 lb, divide weight by 110 lb, and multiply by 450 mL; divide that number by 100, and multiply by 14 (this gives the anticoagulant volume needed); then subtract this from 63 mL, which is the standard volume of anticoagulant in a 450 mL bag. The result is the amount of anticoagulant to remove.
**A women begins to breathe rapidly while donating blood. Choose the correct course of action. **
A. Continue the donation; rapid breathing is not a reason to discontinue a donation
B. Withdraw the needle, raise her feet, and administer ammonia
C. Discontinue the donation, and provide a paper bag for donor to breathe slowly into
D. Tell her to sit upright, and apply a cold compress to her forehead
C. Discontinue the donation, and provide a paper bag for donor to breathe slowly into
This woman is hyperventilating: therefore, the donation should be discontinued. A paper bag should be provided to the donor to breathe into to increase the carbon dioxide in the donor’s air.
A donor bag is half filled during donation when the blood flow stops. Select the correct course of action.
A. Closely observe the bag for at least 3 minutes; if blood flow does not resume, withdraw the needle
B. Remove the needle immediately, and discontinue the donation
C. Check and reposition the needle, if necessary; if blood flow does not resume, withdraw the needle
D. Withdraw the needle, and perform a second venipuncture in the other arm
C. Check and reposition the needle, if necessary; if blood flow does not resume, withdraw the needle
Who is the best candidate for a predeposit autologous donation?
A. A 45 year old man who is having elective surgery in 2 weeks; he has alloanti-k
B. A 23 year old female patient with leukemia and a hemoglobin level of 10 g/dL
C. A 12 year old boy who has hemophilia
D. A 53 year old woman who has septicemia
A. A 45 year old man who is having elective surgery in 2 weeks; he has alloanti-k
The 45 year old man with alloanti-k is the best candidate for predeposit autologous donation because compatible blood will be hard to find if he needs blood after surgery. The other candidates may not be good choices for donation because the process may prove harmful to them.
Can an autologous donor donate blood on Monday if he or she is having surgery on Friday?
A. Yes, he or she can donate up to 72 hours before surgery
B. No, he or she cannot donate within 7 days of surgery
C. Yes, he or she can donate, but only a half a unit
D. No, he or she cannot donate within 5 days of surgery
A. Yes, he or she can donate up to 72 hours before surgery
Which of the following is an acceptable time in which a unit of whole blood is collected?
A. 33 minutes
B. 25 minutes
C. 20 minutes
D. 13 minutes
D. 13 minutes
