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Fig. 5 | BMC Anesthesiology

Fig. 5

From: Design of a Novel Multifunction Decision Support Display for Anesthesia Care: AlertWatch® OR

Fig. 5

Brain Minimum Alveolar Concentration (MAC*) Level. The “fluid level” in the brain represents the level of anesthetic. When the calculated, age-adjusted MAC* level is ≥1.0 the brain color is green and full, Fig. 5. The level will lower until the MAC* level reaches 0.7, at which point the brain color will turn yellow, and as the level moves lower the brain will turn red when the MAC* is < 0.4, as in Fig. 4a. The MAC* is not the traditional MAC* associated with purely inhalation agents. It is the MAC* that has been associated with the incidence of postoperative recall and includes not only the additive value of inhaled anesthetic agents, but also intravenous agents such as propofol and dexmedetomidine [23, 24]

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