Muscle relaxants: rocuronium: 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 · Muscle relaxants: rocuronium

Sample item

Which non-depolarising agent has the fastest onset?

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

The answer and the reasoning

C. Rocuronium

Rocuronium has low potency and therefore a rapid onset, around 60 to 90 seconds at 0.6 mg/kg. It is eliminated mainly through the liver and bile.

Option by option

  • A. Pancuronium

    Pancuronium is slow in onset.

  • B. Vecuronium

    Vecuronium is slower than rocuronium.

  • C. Rocuronium (correct)

    Correct. Rocuronium has the fastest onset among non-depolarisers.

  • D. Atracurium

    Atracurium has intermediate onset.

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, Rocuronium. Rocuronium has low potency and therefore a rapid onset, around 60 to 90 seconds at 0.

Why is "Pancuronium" not the answer?

Pancuronium is slow in onset.

Why is "Vecuronium" not the answer?

Vecuronium is slower than rocuronium.

Why is "Atracurium" not the answer?

Atracurium has intermediate onset.

What concept does this question test?

It tests Muscle relaxants: rocuronium in Anaesthesia. 6 mg/kg. It is eliminated mainly through the liver and bile.

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 Muscle relaxants: rocuronium?

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.