A RhD-negative gravida at 28 weeks has no anti-D antibodies. What is recommended to prevent alloimmunization?...

Question

A RhD-negative gravida at 28 weeks has no anti-D antibodies. What is recommended to prevent alloimmunization?

Accepted Answer

Anti-D immune globulin 300 µg at 28 weeks and within 72 hours postpartum if infant is RhD-positive

Answer

No action until delivery

Answer

Anti-D immune globulin 50 µg at 28 weeks

Answer

Postpartum anti-D only if infant RhD-negative

Answer

Begin anti-D at 36 weeks only

us-abfm MCQ (SBA): Rh Isoimmunization Prevention