Effect of several degrees of hypoventilation on FVRG during emergence. FVRG (partial pressure in the vessel rich group, representing the central nervous system) of desflurane (Figure 2A), sevoflurane (Figure 2B) and isoflurane (Figure 2C) versus time after emergence with variable alveolar minute ventilation (VA). NV = normoventilation; HV = hyperventilation. Any FVRG data point that is above the thick horizontal line representing MACawake indicates rehypnotization.
De Wolf et al. BMC Anesthesiology 2012 12:22 doi:10.1186/1471-2253-12-22