Rh immune globulin is 99.8% effective in preventing
Rh sensitization.1 Rh
immune globulin contains Rh
antibodies that have been purified from human donors.
This treatment prevents an unsensitized Rh-negative mother from making
antibodies against her fetus's Rh-positive blood.
If an affected fetus younger than 34 weeks needs to be delivered,
corticosteroid medicine (betamethasone or dexamethasone) may be given to the mother to speed fetal lung
development before a premature birth.