Critical care: ventilator modes: 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 · Critical care: ventilator modes

Sample item

In which mode does every breath receive a preset tidal volume irrespective of the patient's own effort?

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

The answer and the reasoning

A. Volume-controlled assist-control ventilation

In volume assist-control, each breath, whether triggered or machine-initiated, delivers the set tidal volume. Pressure support provides a flow-cycled pressure for spontaneous breaths only.

Option by option

  • A. Volume-controlled assist-control ventilation (correct)

    Correct. Each breath has a preset volume.

  • B. Spontaneous T-piece

    T-piece provides no ventilator assistance.

  • C. CPAP

    CPAP gives constant airway pressure.

  • D. Pressure support ventilation

    Pressure support depends on patient effort.

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 A, Volume-controlled assist-control ventilation. In volume assist-control, each breath, whether triggered or machine-initiated, delivers the set tidal volume.

Why is "Spontaneous T-piece" not the answer?

T-piece provides no ventilator assistance.

Why is "CPAP" not the answer?

CPAP gives constant airway pressure.

Why is "Pressure support ventilation" not the answer?

Pressure support depends on patient effort.

What concept does this question test?

It tests Critical care: ventilator modes in Anaesthesia. Pressure support provides a flow-cycled pressure for spontaneous breaths only.

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 Critical care: ventilator modes?

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.