Test_Prep
USMLE · Question #497
USMLE Question #497: Real Exam Question with Answer & Explanation
Sign in or unlock USMLE to reveal the answer and full explanation for question #497. The question stem and answer options stay visible for context.
Question
A 30-year-old woman, gravida 2, para 0, aborta 1, at 28-weeks' gestation comes to the office for a prenatal visit. She has had one previous pregnancy resulting in a spontaneous abortion at 12- weeks' gestation. Today, her vital signs are within normal limits. Physical examination shows a uterus consistent in size with a 28- week gestation. Fetal ultrasonography shows a male fetus with no abnormalities. Her blood group is O, Rh-negative. The father's blood group is B, Rh- positive. The physician recommends administration of Rho (D) immune globulin to the patient. This treatment is most likely to prevent which of the following in this mother?
Options
- ADevelopment of natural killer cells
- BDevelopment of polycythemia
- CFormation of antibodies to RhD
- DGeneration of IgM antibodies from fixing complement in the fetus
- EImmunosuppression caused by RhD on erythrocytes from the fetus
Unlock USMLE to see the answer
You've previewed enough free USMLE questions. Unlock USMLE for full answers, explanations, the timed quiz mode, progress tracking, and the master PDF. Question stem and options stay visible so you can still see what's on the exam.