ABO/rhesus

Question 1

Rhesus

Answer 1

RhD pos- have D Ag on RBC surface

Most people are pos

Question 2

Rhesus neg in preg

Answer 2

If RhD neg mum, carrying RhD pos baby- then if babys blood enters mums bloodstream, she prods Abs and is sensitised.
This means if second preg wth RhD pos baby, then Abs can x placenta and attack baby RBCs

Question 3

mx

Answer 3

IM injec of antiD Ig- prevs Ab produc by destroy fetal RBCs before mum can make them
Given to rhesus neg women, after having rhesus pos baby.

Question 4

Baby blood enter mums

Answer 4

Placental bleed
CVS or amniocentesis
External cephalic version
Trauma to tummy
The birth process

Question 5

Risks to baby

Answer 5

Anaemia and then possibly- HF, oedema

Jaundice- so haemolytic dis of newborn- can lead to braind amage and eg CP, S+L probs etc