Shared Flashcard Set

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Blood Bank
ASCP Questions
63
Science
Undergraduate 4
07/05/2012

Additional Science Flashcards

 


 

Cards

Term
The minimum hemoglobin concentrations in a fingerstick from a male blood donor is?
Definition
12.5 g/dL
Term

Which one would be a cause for permanent deferral of blood donation?

 

A. diabetes

B. residence in an endemic malaria region

C. history of jaundice of uncertain cause

D. history of therapeutic rabies vaccination

Definition
history of jaundice of uncertain cause
Term

Which of the following would be accepted for donation?

 

A. woman who received Tx 5 months previously

 

B. Sailor who has been stateside for 9 months and stopped taking his anti-malarial meds 9 months ago

 

C. Student with 99.2 temp

 

D. Woman on antibiotics

Definition
99.2 temp
Term

What is the deferral for receiving blood products?

 

Definition
6 months
Term

What is the deferral for traveling to an endemic area for malaria?

 

Definition
12 months
Term
How high can a person's temperature be before they are deferred?
Definition
99.5
Term

Which of the following constitutes a permanent deferral?

 

A. tattoo 5 months previously

 

B. recent close contact with a patient with viral hepatitis

 

C. 2 units of blood transfused 4 months previously

 

D. confirmed positive test for HBsAg 10 years previously

Definition
Positive HBsAg
Term

What is the deferral for pregnancy?

 

Definition
Six weeks
Term

What must a donor's Hct be?

 

Definition
38%
Term
What must the blood pressure be of the donor?
Definition
<180 / <100
Term
A person who donates platelets more often than every four weeks must have a platelet count of?
Definition
150,000
Term
Prior to blood donation, the venipuncture site is cleaned with?
Definition
PVP Iodine Complex
Term
What was the first mandated screening test for donors?
Definition
Syphillis Testing
Term
Platelets are prepared and stored at?
Definition
22-24 C
Term
What is the most common post transfusion hepatitis?
Definition
Hepatitis B
Term
How can post transfusion Hepatitis be prevented?
Definition
Screen donors for HBsAg
Term
The Western Blot is a confirmatory test for?
Definition
HIV
Term
What test is used to detect donors who are infected with the AIDS virus?
Definition
anti- HIV 1,2
Term
What is a commonly used screening method for anti-HIV detection?
Definition
ELISA
Term
Rejuvenation of a unit of RBS does what?
Definition
restores 2,3 DPG and ATP
Term
How can you split products without affecting expiration dates?
Definition
Use sterile locking devices
Term
How often is platelet temp checked?
Definition
every 4 hours
Term
What temperature is FFP stored at?
Definition
-18 C
Term

If a unit of red cells was issued at 9:00. At 9:15 it is brought back unentered with several segments still attached. 

What do you do?

Definition
Record return and place back into inventory
Term
What are red cells frozen with?
Definition
40% glycerol
Term
What temp. are frozen red cells stored at?
Definition
-65 C
Term
What is the optimum storage temp of red cells?
Definition
1-6 C
Term
What is the expiration on a unit of red cells stored at 1-6 C?
Definition
24 hours
Term
What is the storage temp of Cyroprecipitate AHF?
Definition
-18 C
Term
10 units of Cryo were pooled, when do they expire?
Definition
4 hours
Term
Platelets that are constantly agitated can be stored for how long?
Definition
5 days
Term
What is the storage temp of platelts?
Definition
22-24 C
Term
When does thawed FFP expire?
Definition
24 hours
Term
What is the shelf life of frozen Cryo?
Definition
12 months
Term
At what level should the pH of platelts be maintained?
Definition
6.2 or greater
Term
What is an important determinant of platelet viability?
Definition
plasma pH
Term
What is the storage temperature of liquid plasma?
Definition
1-6 C
Term
The concentration of 2,3 DPG does what in a unit of RBCs?
Definition
decreases
Term
What is used primarily for fibrinogen replacement?
Definition
Cryoprecipitate
Term
How is cryo stored after thawing?
Definition
At room temp
Term
When does thawed and unpooled cryo expire?
Definition
6 hours
Term
When must blood products be irradiated?
Definition
For relative donations
Term
Irradiation of a unit is dones to prevent the replication of what?
Definition
Donor lymphocytes
Term
What must be separated within 8 hours of donor blood collection?
Definition
FFP
Term
How many units of Factor 8 does Cryo contain?
Definition
80
Term
How much fibrinogen does cryo contain?
Definition
At least 150mg
Term
What is left after FFP is thawed slowly and the fluid portion removed?
Definition
Cryo
Term
Clots in a unit could indicate?
Definition
Contamination
Term
Apheresis platelets should contain how many platelets?
Definition
3.0 x 10^11
Term
How do you reduce leukocytes for a bone marrow candidate?
Definition
Leukocyte reducing filter
Term
Platelets prepared from whole blood should contain how many platelets?
Definition
5.5 x 10^10
Term
How are platelets prepared from whole blood?
Definition
light spin followed by a hard spin
Term
What is the minimum pH required for Platelets at the end of the storage period?
Definition
6.2
Term
What prevents HLA alloimmunization?
Definition
Leukocyte Reduced RBCs
Term
What must the Hgb be for an autologous donation?
Definition
11 g/dL
Term
What is the minimum testing requirement for autologous donations?
Definition
ABO and Rh
Term
What are linked HLA genes on each chromosome?
Definition
haplotype
Term
A blood donor has the genotype hh,AB. What is his red cell phenotype?
Definition
O
Term
An individual is senstized with the k AGN and has produced anti-k. What is the most probable Kell system genotype?
Definition
KK
Term
What ethnicity is Fy a-b-?
Definition
African Americans
Term
How are blood group systems inherited?
Definition
automsomal codominant
Term
The mating of an Xg(a+) man with an
Xg(a-) woman creates?
Definition
- sons and + daughters
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