What is the primary purpose of administering Rho(D) immune globulin to an Rh-negative client after a spontaneous abortion?

Administering Rho(D) immune globulin to an Rh-negative client after a spontaneous abortion primarily serves the purpose of preventing the woman from producing antibodies against Rh-positive blood cells. In situations where an Rh-negative individual is exposed to Rh-positive blood, such as during pregnancy or abortion, the immune system may recognize the Rh-positive red blood cells as foreign and respond by producing antibodies against them. This response can lead to hemolytic disease of the newborn in future pregnancies if the mother becomes pregnant again with an Rh-positive baby.

By administering Rho(D) immune globulin, the risks associated with this immune response are mitigated. The immune globulin works by binding to any Rh-positive red blood cells that may have entered the maternal circulation, effectively masking them from the mother's immune system. This action prevents the sensitization that would lead to antibody production. Thus, the correct choice highlights the protective role of Rho(D) immune globulin in maintaining the mother's future pregnancy health.