Which inhalational agent has a MAC around 2%?

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Multiple Choice

Which inhalational agent has a MAC around 2%?

Explanation:
MAC is the concentration of an inhaled anesthetic at which 50% of patients do not move in response to a surgical stimulus; it’s a measure of potency—the lower the MAC, the more potent the agent. Sevoflurane has a MAC around 2%, so it sits in the middle of the potency range and aligns with the “around 2%” value. The other agents have clearly different typical MACs: isoflurane around 1.1%, indicating higher potency but not around 2%; desflurane around 6–7%, and nitrous oxide around ~100%, used mainly as an adjunct rather than as the sole agent. Thus, sevoflurane is the agent whose MAC is near 2%.

MAC is the concentration of an inhaled anesthetic at which 50% of patients do not move in response to a surgical stimulus; it’s a measure of potency—the lower the MAC, the more potent the agent. Sevoflurane has a MAC around 2%, so it sits in the middle of the potency range and aligns with the “around 2%” value. The other agents have clearly different typical MACs: isoflurane around 1.1%, indicating higher potency but not around 2%; desflurane around 6–7%, and nitrous oxide around ~100%, used mainly as an adjunct rather than as the sole agent. Thus, sevoflurane is the agent whose MAC is near 2%.

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