Neuromuscular monitoring: train-of-four: practice question

A Anaesthesia 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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Anaesthesia · Neuromuscular monitoring: train-of-four

Sample item

What TOF ratio is considered adequate recovery from neuromuscular blockade before extubation?

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

The answer and the reasoning

C. At least 0.9

A TOF ratio of 0.9 or more (T4/T1) indicates adequate pharyngeal muscle function and airway protection. Clinical tests such as head lift are less sensitive.

Option by option

  • A. 0.5

    0.5 shows residual block.

  • B. 0.3

    0.3 shows significant residual block.

  • C. At least 0.9 (correct)

    Correct. 0.9 is the accepted threshold.

  • D. 0.7 or less

    0.7 or less is insufficient.

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 Anaesthesia question

What is the answer to this Anaesthesia question?

The best answer is C, At least 0.9. A TOF ratio of 0.

Why is "0.5" not the answer?

0.5 shows residual block.

Why is "0.3" not the answer?

0.3 shows significant residual block.

Why is "0.7 or less" not the answer?

0.7 or less is insufficient.

What concept does this question test?

It tests Neuromuscular monitoring: train-of-four in Anaesthesia. 9 or more (T4/T1) indicates adequate pharyngeal muscle function and airway protection. Clinical tests such as head lift are less sensitive.

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 Neuromuscular monitoring: train-of-four?

Make a table of each agent, its key advantage and its main side effect. Then use the flashcards and the other Anaesthesia 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.