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Basic and Applied Concepts of Blood
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Basic and Applied Concepts of Blood
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Basic and Applied Concepts of Blood
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Basic and Applied Concepts of Blood
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TEST BANK FOR IMMUNOHEMATOL OGY 4TH EDITION BY HOWARD | VERIFIED 2023/2024
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TEST BANK for Basic and Applied Concepts of Blood Bankingand Transfusion Practices 5th Edition By Howard
what are the 4 types of blood products - ANSWER:-Packed RBC's
-platelets
-FFP
-cryoprecipitate
What are 3 ways blood is donated? - ANSWER:-directed: one person for a specific
recipient
-autonomous: I give it for myself to use
-allogenic: donors give and it is pooled for people in need
Why do we centrifuge whole blood? - ANSWER:-removes 80% fo plasma which helps
to limit reactions caused by plasma and the concentration of sodium, potassium and
lactic acid
how long does it take to do a type and screen? - ANSWER:-15 min
how long does it take to do a type and cross? - ANSWER:about an hour
-unless they have a complicated case like past transfusions, etc
Where do we get the platelets we give to people? - ANSWER:-single donor
plateletpherisis
What is the shelf life for PRBC's - ANSWER:3-6 weeks
What is the shelf life for platelets? - ANSWER:-5 days
What is the shelf life for FFP - ANSWER:1 year, but 24 hours once thawed (same for
cryoprecipitate)
Actively bleeding patients should be transfused until their platelets reach what level?
- ANSWER:-50,000
pts with DIC should be transfused until their platelets reach what level? - ANSWER:-
100,000
in an asymptomatic pt, platelets should be tranfused until the level reaches what? -
ANSWER:-20,000
what is the panic value for platelets? - ANSWER:20,000
what should the platelet level be if doing nuero, ocular, or cardiac surgery? -
ANSWER:>100,000
, what should the platelet level be if doing major surgery? - ANSWER:80-100,000 or
higher
what should the platelet level be if doing a minor surgery (some type of scope) -
ANSWER:50,000-80,000
what does it mean to be alloimmunized - ANSWER:-carriers of various antigens.
usually from multiple transfusions (that makes it harder for them to get platelets
that match)
what are contraindications for the transfusion of platelets? - ANSWER:-TTP and HIT
What is the universal donor for FFP? - ANSWER:-AB
Who should get FFP? - ANSWER:Helps people clot
-massive bleeding
-isolated factor deficiency
-*reversal of warfarin*
-correction of coagulopathies associated with liver disease
-DIC
what is the primary use for cryoprecipitate - ANSWER:-replacement of fibrinogen
and vWF (helps you clot)
When is it "okay-ish" to give NS instead of RBC - ANSWER:-when the goal is volume
replacement in cases of N/V dehydration, not blood loss
-however, NS still does not carry O2 throughout body, so should still give RBC if
available
What is leukocyte reduced PRBC's and platelets and who should receive it? -
ANSWER:-70-85% of WBC's removed
-chronically ill, cardiac surgery, solid organ transplant, immunocompromised
what are irradiated PRBC's and who should get it? - ANSWER:eliminates capacity of T
lymphocytes to proliferate, decreasing the likelihood of GVHD
-immunocompromised, neonates, transplant recipients
who should get washed RBC's and platelets? - ANSWER:- people who have had
severe allergic reaction to plasma or IgA deficiency
who gets frozen RBC's and plasma? - ANSWER:-rare blood types
when do you order a type and screen vs a type and cross? - ANSWER:-type and
screen if you think you may need it (stable, but some risk of bleeding)
-type and cross if you know theres a very good chance you will need it in the next
few hours (Hgb low or significant blood loss)
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