Blood compability Flashcards
Types of antigen
Antigen AB
Rhesus factor (Antigen D)
Difference between antigen AB and antigen D
Antigen AB - sugar
Antigen D - protein
Antigen AB - Low immunogenic
Antigen D - highly immunogenic
What antigen does the blood type AB- has
Antigen A and Antigen B
What antigen does the blood type O+ has
Antigen D
What determines existence of antbody
If the antigen does not exist then it’s antibody does
What determines combability of blood
Two bloods are not compatible if the receiver’s antibody and donor’s antigen match
What blood type of mother and fetus can cause health issues?
Mother rhesus negative
Baby rhesus positive
Explain the process of blood incompability between mother and fetus
Last month of pregnancy - foetal blood cross into placenta into mother’s bloodstream
Foetal blood has antigen D
WBC of mother produce anti-D
Flow back into foetal bloodstream via placenta
Anti-D destroy RBC of foetal
What happens if recipient receives incompatible blood
agglutination
Health effects of incompatible blood during pregnancy
Foetuses from this issue are called erythroblastosis fetallis
Baby might suffer from anaemia or mental retardation
How to avoid erythroblastosis fetallis
Eat anti-globulin pill during early stages of pregnancy
Is erythroblastosis fetallis very dangerous for the first child
No due to low anti-D concentration but is very dangerous for the second child
