Final answer:
RhoGAM is administered to prevent Rh incompatibility in future pregnancies and reduce the risk of HDN.
Step-by-step explanation:
RhoGAM, also known as Rh immune globulin, is administered to Rh-negative mothers who have delivered an Rh-positive infant. The purpose of RhoGAM is to prevent Rh incompatibility in future pregnancies. It works by destroying any fetal Rh erythrocytes that may cross the placental barrier, thereby preventing the mother's immune system from producing anti-Rh antibodies. This helps reduce the risk of hemolytic disease of the newborn (HDN), a potentially serious condition caused by Rh factor incompatibility.