Blood Transfusion Flashcards
What are antigens?
Something that provokes an immune response
What do blood groups arise from?
Antigens
Causes of transfusion reaction or haemolytic disease of the newborn
Anti-D
Who makes anti-D and when?
RhD- people if exposed to RhD+ cells
Transfusion or pregnancy
Indications for red cell transfusion
To correct severe acute anaemia, which might otherwise cause organ damage
To improve quality of life in patient with otherwise uncorrectable anaemia
To prepare a patient for surgery or speed up recovery
To reverse damage caused by patient’s own red cells (sickle cell anaemia)
What temperature are RBCs stored at?
4 degrees C
What temperature are platelets stored at?
22 degrees C
What is the shelf life of platelets?
7 days
How long does fresh frozen plasma take to thaw?
30 minutes
FFP
Fresh frozen plasma
HDN
Haemolytic disease of the newborn
What combination of RhD +/- in the mother/foetus causes HDN?
Rh- mother/Rh+ baby
Mother is exposed to RhD and creates anti-D
How can HDN be prevented/treated?
Prevention using prophylactic anti-D
Treatment by careful monitoring
Indication for red cell transfusion
Anaemia
Sickle cell disease
Indication for platelet transfusion
Thrombocytopenia
Indication for FFP transfusion
Low coagulation factors
Indication for cryoprecipitate transfusion
Low fibrinogen
Storage temperature of FFP
-25 degrees
Shelf life of cryoprecipitate
2 years
Storage temerature of cryoprecipitate
-25 degrees
What does cryoprecipitate contain?
Coagulation factors - VIII, XIII vWF, fibrinogen
Would you transfuse a bleeding patiet with factor VIII deficiency?
No - use factor VIII concentrate
Would you transfer a bleeding patiet with factor V deficiency?
Yes - there is no factor V concentrate
What would you give a bleeding patient on warfarin?
Factor III or IV concentrate and vitamin K
TACO
Transfusion asscociated cardiac overload
Possible transfusion reactions
Pyrexia
Urticaria
Dyspnoea
Shock
FNHTR
Febrile non haemolytic transfusion reactions
Causes of urticaria after a transfusion
Mild allergic reaction
Anaphylaxis
Urticaria treatment
Antihistamines
Possible causes of dyspnoea after transfusion
TACO
TRALI
Anaphylaxis
TRALI
Transfusion-related acute lung injury
Treatment of dyspnoea aftger transfusion
O2
Diuretic
Ventilation
Adrenaline