Highest MAC is of Which inhalational agent-: (A) Xenon, (B) Halothane, (C) Sevoflurane, (D) Isoflurane
Answer is A. Minimum alveolar concentration is defined as the alveolar concentration of an inhaled anesthetic agent that prevents movement in 50% of patients in response to a standardized surgical stimulus. Low MAC - High potency MAC values of adult Halothane: 0.75 Sevoflurane: 2.0 Isoflurane: 1.2 Desflurane: 6.0 Enflurane: 1.7 Xenon: 70 N2O: 104