Obstetric medicine: RhD prophylaxis: practice question

A OBG question in the style of the NEET PG paper. Answer it first, then read why the right option is right and why each of the others is wrong.

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OBG · Obstetric medicine: RhD prophylaxis

Sample item

What is the purpose of anti-D immunoglobulin in an unsensitized RhD-negative pregnant patient carrying a potentially RhD-positive fetus?

APrevent maternal RhD alloimmunizationBTreat established fetal anemia directlyCInduce deliveryDIncrease fetal hemoglobin production

Original practice item, not a recalled exam question. Nothing here is recorded.

The answer and the reasoning

A. Prevent maternal RhD alloimmunization

Anti-D immunoglobulin prevents maternal immune sensitization to fetal RhD-positive red cells after fetomaternal hemorrhage risk. It is prophylactic and does not reverse established alloimmunization.

Option by option

A. Prevent maternal RhD alloimmunization (correct)
Correct. It prevents formation of maternal anti-D antibodies.
B. Treat established fetal anemia directly
Established severe fetal anemia needs specialist fetal-medicine management.
C. Induce delivery
It is not an induction agent.
D. Increase fetal hemoglobin production
It does not stimulate fetal erythropoiesis.

Source note: Original NextPrep sample item — pending expert review. This item is original practice material awaiting independent expert review, so confirm important facts in a standard textbook.

Questions about this OBG question

What is the answer to this OBG question?

The best answer is A, Prevent maternal RhD alloimmunization. Anti-D immunoglobulin prevents maternal immune sensitization to fetal RhD-positive red cells after fetomaternal hemorrhage risk.

Why is "Treat established fetal anemia directly" not the answer?

Established severe fetal anemia needs specialist fetal-medicine management.

Why is "Induce delivery" not the answer?

It is not an induction agent.

Why is "Increase fetal hemoglobin production" not the answer?

It does not stimulate fetal erythropoiesis.

What concept does this question test?

It tests Obstetric medicine: RhD prophylaxis in OBG. It is prophylactic and does not reverse established alloimmunization.

How hard is this question?

We tag it as an application question: it asks you to use a fact on a patient or a finding. The tag is our own editorial judgement, not an official difficulty rating, so read the reason for every option, not only the answer.

How should I study Obstetric medicine: RhD prophylaxis?

Learn management algorithms as steps: PPH, eclampsia, ectopic pregnancy. Then use the flashcards and the other OBG questions on this site to test what stuck.

Is this a real NEET PG question?

No. It is an original practice item (editorial status: sample, version 1). NextPrep does not publish recalled or leaked questions, and independent faculty review of this item has not been completed yet, so confirm important facts in a standard textbook.