If a miscarriage occurs and the patient is Rh-negative, what action is required to prevent antibody formation in future pregnancies?

If a miscarriage occurs and the patient is Rh-negative, what action is required to prevent antibody formation in future pregnancies?

• A. Administer RhoGAM within 72 hours of the miscarriage.
• B. Administer antibiotics after the miscarriage.
• C. Schedule an ultrasound to check fetal status.
• D. Observe for signs of infection.

Answer: (C)

Preventing Rh sensitization after exposure to fetal Rh-positive cells. When an Rh-negative mother experiences a miscarriage, fetal red cells can enter the maternal circulation. If this happens, her immune system may produce anti-D antibodies that could compromise future pregnancies. The way to prevent that is to give Rh immune globulin (RhoGAM) within 72 hours after the miscarriage. The Rh immune globulin binds the fetal Rh-positive cells in the mother's blood, preventing her immune system from recognizing them as foreign and forming antibodies. This protects future pregnancies from potential hemolytic disease of the newborn. The other actions—antibiotics, ultrasound checks, or simply observing for infection—do not prevent antibody formation.

Preventing Rh sensitization after exposure to fetal Rh-positive cells. When an Rh-negative mother experiences a miscarriage, fetal red cells can enter the maternal circulation. If this happens, her immune system may produce anti-D antibodies that could compromise future pregnancies. The way to prevent that is to give Rh immune globulin (RhoGAM) within 72 hours after the miscarriage. The Rh immune globulin binds the fetal Rh-positive cells in the mother's blood, preventing her immune system from recognizing them as foreign and forming antibodies. This protects future pregnancies from potential hemolytic disease of the newborn. The other actions—antibiotics, ultrasound checks, or simply observing for infection—do not prevent antibody formation.