Intravenous agents: 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 · Intravenous agents

Sample item

Which intravenous induction agent is a dissociative anaesthetic that tends to preserve blood pressure?

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

The answer and the reasoning

C. Ketamine

Ketamine blocks NMDA receptors and produces analgesia and dissociation with increased heart rate and blood pressure through sympathetic stimulation. It preserves airway reflexes and is useful in shock and asthma. It can cause emergence delirium and raises intracranial pressure.

Option by option

  • A. Midazolam

    Midazolam is a benzodiazepine sedative with little analgesia.

  • B. Propofol

    Propofol causes vasodilatation and hypotension.

  • C. Ketamine (correct)

    Correct. It supports blood pressure and gives analgesia.

  • D. Thiopentone

    Thiopentone causes hypotension and is a non-analgesic barbiturate.

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 C, Ketamine. Ketamine blocks NMDA receptors and produces analgesia and dissociation with increased heart rate and blood pressure through sympathetic stimulation.

Why is "Midazolam" not the answer?

Midazolam is a benzodiazepine sedative with little analgesia.

Why is "Propofol" not the answer?

Propofol causes vasodilatation and hypotension.

Why is "Thiopentone" not the answer?

Thiopentone causes hypotension and is a non-analgesic barbiturate.

What concept does this question test?

It tests Intravenous agents in Anaesthesia. It preserves airway reflexes and is useful in shock and asthma. It can cause emergence delirium and raises intracranial pressure.

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 Intravenous agents?

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.