Inhalational anaesthetics: 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 · Inhalational anaesthetics

Sample item

Which of the following inhalational agents has the lowest MAC, and so the highest potency?

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

The answer and the reasoning

B. Halothane

MAC is inversely related to potency. Approximate values are halothane 0.75%, isoflurane 1.2%, sevoflurane 2% and desflurane 6%.

Option by option

  • A. Sevoflurane

    Sevoflurane has a higher MAC.

  • B. Halothane (correct)

    Correct.

  • C. Desflurane

    Desflurane has the highest MAC of these.

  • D. Isoflurane

    Isoflurane has a higher MAC.

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.

More Anaesthesia questions

Questions about this Anaesthesia question

What is the answer to this Anaesthesia question?

The best answer is B, Halothane. MAC is inversely related to potency.

Why is "Sevoflurane" not the answer?

Sevoflurane has a higher MAC.

Why is "Desflurane" not the answer?

Desflurane has the highest MAC of these.

Why is "Isoflurane" not the answer?

Isoflurane has a higher MAC.

What concept does this question test?

It tests Inhalational anaesthetics in Anaesthesia. Approximate values are halothane 0.75%, isoflurane 1.2%, sevoflurane 2% and desflurane 6%.

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 Inhalational anaesthetics?

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.