Antenatal care: contraction stress test: 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 · Antenatal care: contraction stress test

Sample item

A contraction stress test in a woman at 36 weeks with suspected growth restriction shows late decelerations after more than half of three contractions in 10 minutes. How is this test reported?

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

The answer and the reasoning

A. Positive, suggesting uteroplacental insufficiency

A contraction stress test is positive when late decelerations follow at least 50 percent of contractions, and it is negative when there are no late or significant variable decelerations with adequate contractions. A positive test indicates inadequate placental reserve and often leads to delivery. It is contraindicated in praevia and previous classical scar.

Option by option

  • A. Positive, suggesting uteroplacental insufficiency (correct)

    Correct. Late decelerations after 50 percent or more of contractions make the test positive.

  • B. Negative and reassuring

    A negative test shows no late decelerations.

  • C. Unsatisfactory

    Unsatisfactory tests have fewer than three contractions in 10 minutes or poor tracing.

  • D. Equivocal

    Equivocal tests show intermittent late or significant variable decelerations.

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.

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Questions about this OBG question

What is the answer to this OBG question?

The best answer is A, Positive, suggesting uteroplacental insufficiency. A contraction stress test is positive when late decelerations follow at least 50 percent of contractions, and it is negative when there are no late or significant variable decelerations with adequate contractions.

Why is "Negative and reassuring" not the answer?

A negative test shows no late decelerations.

Why is "Unsatisfactory" not the answer?

Unsatisfactory tests have fewer than three contractions in 10 minutes or poor tracing.

Why is "Equivocal" not the answer?

Equivocal tests show intermittent late or significant variable decelerations.

What concept does this question test?

It tests Antenatal care: contraction stress test in OBG. A positive test indicates inadequate placental reserve and often leads to delivery. It is contraindicated in praevia and previous classical scar.

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 Antenatal care: contraction stress test?

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.