Ear and audiology: electroneuronography: practice question

A ENT 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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ENT · Ear and audiology: electroneuronography

Sample item

Ten days after onset of complete facial palsy from a temporal bone injury, electroneuronography shows more than 90 percent degeneration. What does this imply?

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

The answer and the reasoning

B. Poor prognosis, so surgical decompression is considered

Electroneuronography compares the evoked compound action potential on the two sides and estimates the percentage of degenerated fibres. Degeneration exceeding 90 percent within 3 weeks predicts incomplete recovery and supports decompression. The test is useful only after about 3 days when Wallerian degeneration is established.

Option by option

  • A. Excellent prognosis with spontaneous recovery

    Recovery is likely when degeneration is below 90 percent.

  • B. Poor prognosis, so surgical decompression is considered (correct)

    Correct. Rapid severe degeneration predicts a poor result.

  • C. Need only for eye care

    Eye care is needed, but the test directs timing of surgery.

  • D. That the lesion is central

    A central lesion would spare the forehead.

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 ENT question

What is the answer to this ENT question?

The best answer is B, Poor prognosis, so surgical decompression is considered. Electroneuronography compares the evoked compound action potential on the two sides and estimates the percentage of degenerated fibres.

Why is "Excellent prognosis with spontaneous recovery" not the answer?

Recovery is likely when degeneration is below 90 percent.

Why is "Need only for eye care" not the answer?

Eye care is needed, but the test directs timing of surgery.

Why is "That the lesion is central" not the answer?

A central lesion would spare the forehead.

What concept does this question test?

It tests Ear and audiology: electroneuronography in ENT. Degeneration exceeding 90 percent within 3 weeks predicts incomplete recovery and supports decompression. The test is useful only after about 3 days when Wallerian degeneration is established.

How hard is this question?

We tag it as a multi-step question: it asks you to combine more than one idea. 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 Ear and audiology: electroneuronography?

Learn tuning fork results and audiogram patterns by sketching them. Then use the flashcards and the other ENT 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.