General Anesthetics: Mechanism and Effects

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Questions and Answers

What is the primary mechanism of action for the intravenous anesthetic propofol?

Inhibition of the GABA-B receptor
Inhibition of the NMDA receptor
Mechanism is unknown (correct)
Potentiation of the GABA-A receptor

Which of the following adverse effects is associated with the intravenous anesthetic etomidate?

Malignant hyperthermia
Postoperative nausea and vomiting
Bronchospasm
Acute adrenal insufficiency (correct)

Which of the following inhaled anesthetics is known to have the highest potency?

Nitrous oxide (N₂O)
Isoflurane (correct)
Desflurane
Sevoflurane

Which of the following statements about nitrous oxide (N₂O) is true?

It can cause diffusion into and expansion of gas-filled cavities (B) Signup and view all the answers

Which of the following is a potential adverse effect of the intravenous anesthetic ketamine?

Hallucinations and vivid dreams (C) Signup and view all the answers

Which of the following statements about inhaled anesthetics is true?

Drugs with high solubility in blood have rapid induction and recovery times (B) Signup and view all the answers

Which of the following is a potential adverse effect of the inhaled anesthetic isoflurane?

Increased cerebral blood flow and intracranial pressure (ICP) (C) Signup and view all the answers

Which of the following statements about the Minimum Alveolar Concentration (MAC) is true?

MAC is the concentration of an inhaled anesthetic required to prevent 50% of subjects from moving in response to a noxious stimulus (B) Signup and view all the answers