What is the MAC of isoflurane?

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Multiple Choice

What is the MAC of isoflurane?

Explanation:
MAC expresses potency: the lower the MAC, the more potent the inhaled anesthetic. For isoflurane in a healthy adult at standard conditions, the typical MAC is about 1.15%, commonly cited as a range of 1–1.3%. So the range 1–1.3% is the best match. This reflects the concentration needed to prevent movement in 50% of patients exposed to a painful stimulus. Other ranges would correspond to different drugs or conditions and are not correct for isoflurane. In practice, clinicians aim for roughly 1.2% end-tidal isoflurane in adults, adjusting for factors like age and co-administered drugs.

MAC expresses potency: the lower the MAC, the more potent the inhaled anesthetic. For isoflurane in a healthy adult at standard conditions, the typical MAC is about 1.15%, commonly cited as a range of 1–1.3%. So the range 1–1.3% is the best match. This reflects the concentration needed to prevent movement in 50% of patients exposed to a painful stimulus. Other ranges would correspond to different drugs or conditions and are not correct for isoflurane. In practice, clinicians aim for roughly 1.2% end-tidal isoflurane in adults, adjusting for factors like age and co-administered drugs.

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