Pharynx: drug-induced sleep endoscopy: 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 · Pharynx: drug-induced sleep endoscopy

Sample item

A 45-year-old man with moderate obstructive sleep apnoea cannot tolerate CPAP and is considered for surgery. What is the purpose of drug-induced sleep endoscopy?

ATo obtain tissue for histologyBTo assess daytime sleepinessCTo identify the site, pattern and degree of airway collapse during induced sleep to select surgeryDTo measure the apnoea-hypopnoea index

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

The answer and the reasoning

C. To identify the site, pattern and degree of airway collapse during induced sleep to select surgery

Under sedation the nasopharynx is examined with a flexible endoscope to see where and how the airway collapses at the palate, oropharynx, tongue base and epiglottis. The findings guide the choice of operation or whether a hypoglossal stimulator is suitable. The AHI comes from polysomnography.

Option by option

A. To obtain tissue for histology
It is not a biopsy procedure.
B. To assess daytime sleepiness
Sleepiness is assessed by questionnaires such as the Epworth scale.
C. To identify the site, pattern and degree of airway collapse during induced sleep to select surgery (correct)
Correct. It maps collapse so procedures can be matched to the level of obstruction.
D. To measure the apnoea-hypopnoea index
The apnoea-hypopnoea index is measured by polysomnography.

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 ENT question

What is the answer to this ENT question?

The best answer is C, To identify the site, pattern and degree of airway collapse during induced sleep to select surgery. Under sedation the nasopharynx is examined with a flexible endoscope to see where and how the airway collapses at the palate, oropharynx, tongue base and epiglottis.

Why is "To obtain tissue for histology" not the answer?

It is not a biopsy procedure.

Why is "To assess daytime sleepiness" not the answer?

Sleepiness is assessed by questionnaires such as the Epworth scale.

Why is "To measure the apnoea-hypopnoea index" not the answer?

The apnoea-hypopnoea index is measured by polysomnography.

What concept does this question test?

It tests Pharynx: drug-induced sleep endoscopy in ENT. The findings guide the choice of operation or whether a hypoglossal stimulator is suitable. The AHI comes from polysomnography.

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 Pharynx: drug-induced sleep endoscopy?

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.