Monitoring and anaesthesia workstation: curriculum recognition: 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 · Monitoring and anaesthesia workstation: curriculum recognition

Sample item

An anaesthetist wants to stop a vaporiser calibrated for one volatile agent from being topped up with a different liquid agent by mistake. Which design feature of modern vaporisers does this?

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

The answer and the reasoning

B. Agent-specific keyed port on the filler

Modern vaporisers have a filler fitted with an agent-specific key, so only the bottle of the matching agent can be connected. This prevents a wrongly filled vaporiser from delivering an unpredictable concentration. Other safety features, such as the interlock and temperature compensation, address different hazards.

Option by option

  • A. Pressure-relief valve on the vaporiser outlet

    A pressure-relief valve protects against back pressure from the circuit and has no role in filling.

  • B. Agent-specific keyed port on the filler (correct)

    Correct. Only a bottle with the matching key fits, so the vaporiser cannot be filled with the wrong agent.

  • C. Interlock allowing only one vaporiser on the manifold to be turned on

    The interlock stops two vaporisers delivering together; it does not prevent wrong filling.

  • D. Bimetallic strip that compensates for temperature

    Temperature compensation keeps output constant as the liquid cools; it does not stop wrong filling.

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, Agent-specific keyed port on the filler. Modern vaporisers have a filler fitted with an agent-specific key, so only the bottle of the matching agent can be connected.

Why is "Pressure-relief valve on the vaporiser outlet" not the answer?

A pressure-relief valve protects against back pressure from the circuit and has no role in filling.

Why is "Interlock allowing only one vaporiser on the manifold to be turned on" not the answer?

The interlock stops two vaporisers delivering together; it does not prevent wrong filling.

Why is "Bimetallic strip that compensates for temperature" not the answer?

Temperature compensation keeps output constant as the liquid cools; it does not stop wrong filling.

What concept does this question test?

It tests Monitoring and anaesthesia workstation: curriculum recognition in Anaesthesia. This prevents a wrongly filled vaporiser from delivering an unpredictable concentration. Other safety features, such as the interlock and temperature compensation, address different hazards.

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 Monitoring and anaesthesia workstation: curriculum recognition?

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.