Final answer:
The nurse should anticipate administering Rho(D) immune globulin (RhoGAM) to the client within 72 hours after the miscarriage because the client is Rh negative. This can prevent the development of Rh antibodies and reduce the risk of complications in future pregnancies.
Step-by-step explanation:
The nurse should anticipate administering Rho(D) immune globulin (RhoGAM) to the client within 72 hours after the miscarriage. RhoGAM is necessary because the client is Rh negative, and the expulsion of the products of conception increases the risk of sensitization. Administering RhoGAM within the recommended time frame can prevent the development of Rh antibodies in the client's immune system, reducing the risk of complications in future pregnancies.