Fig. 4.
Richmond Agitation Sedation Scale (RASS), modified 5-point composite Observer’s Assessment of Alertness/Sedation (OAA/S), and Bispectral Index score (BIS) before and during sedation with dexmedetomidine (closed triangles with solid line) or propofol (open circles with dotted line). The shaded area shows the time for sedation with drug infusion at low and moderate rates. Sedation checks, OAA/S, and RASS, were conducted at baseline and before and immediately after airway measurements. BIS was recorded before, during, and after airway measurements. The vertical broken line indicates the time point when the infusion rate was changed from low to moderate. Data are presented as means ± SD for BIS and as median (interquartile range) for OAA/S and RASS. Please note that error bars of SD are unidirectional for clarity. If no error bars are visible they are smaller than the symbols. *P < 0.05; **P < 0.01.