Rho(D) immune globulin
Background
Risk = >4-12wks
Treatment
1st Trimester
--> give 50 microgm
2nd & 3rd Trimester
--> give 300 microgm once and send Kleihauer-Betke test
--> within 72hrs give additional 300 microgm/15 ml Rh-positive blood
- Exceptions: (1) prior sensitization of mother, (2) known Rh-negative father, and (3) known Rh-negative fetus (from cord blood)
