Fig. 5. Model parameters obtained from measurements of a mechanical lung model ventilated with 50% oxygen and during the same amount of volatile anesthetics given to children in the current study. Data are mean ± SEM . *P < 0.05  versus 50% oxygen . # P < 0.05  versus sevoflurane (Sevo). Des = desflurane; G = tissue damping; H = tissue elastance; I = airway inheritance; Rn = airway resistance .