Fig. 2From: Effect-site concentration of propofol required for LMA-Supreme™ insertion with and without remifentanil: a randomized controlled trialPatients’ responses to Laryngeal Mask Airway Supreme™ insertion in the propofol + saline group. Arrows indicate the midpoint of the effect-site concentration of all independent pairs of patients involving crossover from device insertion failure to successful Laryngeal Mask Airway Supreme™ insertionBack to article page