Q. Which is incorrect with regards to Rhesus isoimmunisation? (Solved)
1. The chance of a Rh-ve mother developing antiD antibodies to a Rh+ve fetus is less than 20% (even if not given antiD)
2. Anti D must be given within 24 hours to have any substantial effect
3. The risk of maternofetal transfusion is very small in a first trimester abortion and thus a smaller dose of anti D could be given
4. The IgM anti D antibodies cannot cross the placenta but the IgG antibodies can
5. It is a blood product.
- b. Anti D must be given within 24 hours to have any substantial effect