blood transfusion Flashcards
(13 cards)
What is one unit of blood
450mls from one donor
How should red blood cells be transfused over
5g/L over 2-4 hours
What is the threshold for platelet transfusion in bone marrow failure
Platelet count < 1-15x10 to the power of 9/L
When is red cell transfusion indicated
- Severe acute anaemia
- Uncorrectable anaemia
- Sickle cell disease
What should be done when about to use fresh frozen plasma
Allow to thaw for 30 minutes
What is the indication for fresh frozen plasma
- Massive haemorrhage
- Disseminated intervascular coagulation with bleeding
- Thrombotic thrombocytopenic purpura
- Prophylactic for procedures and deranged coagulation
If you are blood group A which blood group do you have antibodies against
The B antigen - in utero, produced A so seen as self antigen but B is seen as foreign
Which blood groups can be transfused to blood group A
A and O
If you are blood group B which blood group can you be transufesd blood from
B and O
If you are blood group O which blood group can you be transufesd blood from
O
If you are blood group AB which blood group can you be transufesd blood from
A,B and O
What happens when an RhD negative individual is exposed to RhD positive cells
Anti D cells can be produced which can cause transfusion reactions or haemolytic disease of a newborn
Describe how haemolytic disease of the newborn is prevented
Anti-D is given to all mothers at birth who are RhD negative
