Final answer:
To help an Rh+ fetus and a sensitized mother, Rh immune globulin (RhoGAM) should be administered to the mother.
Step-by-step explanation:
To help an Rh+ fetus and a sensitized mother, Rh immune globulin should be administered to the mother. This drug, also known as RhoGAM, prevents the development of Rh antibodies in the mother, which can cross the placenta and attack the fetal blood, causing anemia. RhoGAM antibodies destroy any fetal Rh erythrocytes that may cross the placental barrier. It is typically given to Rh mothers during weeks 26-28 of pregnancy and within 72 hours following birth.