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Questions and Answers
What type of blood would you use for urgent pRBCs (packed red blood cells) if following a massive transfusion protocol?
What type of blood would you use for urgent FFP (fresh frozen plasma) or platelets if following a massive transfusion protocol?
What is the purpose of the questionnaire during the pre-screening process for blood donations?
What is the purpose of irradiating blood for certain patient groups?
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What is the purpose of washing the blood for certain patient groups?
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What is the most common cause of ABO incompatibility transfusions?
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Which type of blood product is most commonly used for patients with severe anemia?
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In which clinical scenario might whole blood be used for transfusion?
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Which blood product is typically used for patients with severe thrombocytopenia?
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What is the main component removed from packed red blood cells to create this blood product?
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In which situation would whole blood be used in an autologous manner?
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Which fractionated blood product is indicated for hemorrhagic shock and severe anemia?
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Which of the following is NOT one of the 36 blood group systems?
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What is the primary basis for transfusion reactions?
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How many different antigens are expressed on the surface of red blood cells (RBCs)?
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Which of the following is NOT a blood group system mentioned in the text?
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What is the primary function of the ABO and Rh blood group systems?
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What is the term used to describe alternative forms of a gene?
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Which of the following is a potential complication of massive blood transfusion?
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Which of the following is the most likely complication of massive transfusion in a patient with thrombocytopenia?
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In haemolytic disease of the fetus and newborn (HDFN), what is the primary cause of the immune response against the fetal red blood cells?
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In Rh incompatibility, which of the following antibodies is primarily responsible for hemolytic disease of the fetus and newborn (HDFN)?
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Which of the following blood group system incompatibilities is most likely to cause a severe hemolytic transfusion reaction?
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Which of the following is the most common cause of an acute hemolytic transfusion reaction?
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In which of the following scenarios would a patient be at highest risk for developing transfusion-related acute lung injury (TRALI)?
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In patients with severe thrombocytopenia, what is the primary concern associated with platelet transfusions?
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Which of the following is a potential cause of a febrile non-hemolytic transfusion reaction?
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Which of the following blood group systems is primarily responsible for hemolytic disease of the newborn (HDN) in populations with a high prevalence of the corresponding antigen?
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Which of the following is the most appropriate management for a patient who develops an acute hemolytic transfusion reaction due to ABO incompatibility?
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In the context of blood transfusions, what is the primary function of the Rh blood group system?
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What is the most appropriate action to take in the event of a massive transfusion reaction?
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In the context of massive transfusion protocols, what is the primary concern with using O- blood for urgent packed red blood cell (pRBC) transfusions?
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Which of the following patients would be most likely to receive irradiated blood products?
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In the context of thrombocytopenia, what is the primary concern with using AB+ blood for urgent platelet transfusions?
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What is the primary concern with administering non-irradiated blood products to a patient with graft-versus-host disease (GvHD)?
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Which of the following is the most likely cause of hemolytic disease of the fetus and newborn (HDFN)?
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Study Notes
Blood Transfusions
- Blood transfusions involve the transfer of blood or blood products from a donor to a recipient
- Mass transfusion protocol: blood bank releases large amounts of blood while awaiting group and cross-match results
Blood Groups
- ABO and Rh blood groups are the basis of transfusion reactions
- There are approximately 250 antigens on the surface of RBCs, grouped into 36 blood group systems
- Examples of blood group systems: ABO, Rh, Kell, Duffy, Kidd, Diego, MNS, Lutheran, P, Lewis, I, Auberger, Junior, Xg, Scianna, Dombrock, Colton, Landsteiner-Wiener, Chido/Rodgers, Hh, Indian, Ok, Rh-associated glycoprotein (RhAG), Gerbich, Knops, Cromer, John Milton Hagen (JMH), Diego, Cartwright, Langereis, Cost, Auger, Tektin, FORS, Vel, and Wright
Blood Products
- Two types of blood products: whole blood and fractionated blood products
- Whole blood is rarely used, except in autologous transfusion or for Jehovah's Witnesses
- Fractionated blood products:
- Packed red blood cells (most common): collection of RBCs with plasma removed, used for haemorrhagic shock, pre-operative planning, and severe anaemia (Hb < 70)
- Platelets: platelets in plasma or additive solution, used for severe thrombocytopenia
Pre-Screening and Safety
- Pre-screening involves: questionnaire, blood test (FBC, blood type, infectious screening), and further measures for specific patient groups
- Safety measures:
- Written consent prior (unless in emergency)
- Labelled specimen with 3 patient identifiers
- Administered by 2 clinical staff
- Timer started once left blood bank – must be used within 4 hours; if no longer needed, ideally take back to blood bank
- The most common cause of ABO incompatibility transfusions is improper labelling and patient misidentification
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Description
Test your knowledge on blood groups, transfusions, transfusion products, reactions, and complications like haemolytic disease of the fetus and newborn. Explore principles of transfusions, safety measures, screening procedures, and different types of blood products.