Fig. 3

Correlations between the propofol concentration in exhaled air and BIS (a) presents the BIS-time curves following the administration of three doses of fospropofol disodium; (b), (c), and (d) depict the correlations of propofol concentration in exhaled air and BIS under single intravenous infusion of low, medium, and high doses of fospropofol disodium, respectively