American Society of Anesthesiologists

Fig. 1.

$Study protocol of the randomized, controlled crossover study. The volunteers were randomized to start with either dexmedetomidine (D) or propofol (P). Schematic overview of the experimental protocol including conduction of the ventilatory tests to hypoxia and hypercapnia. ETco2 = end-tidal carbon dioxide; ETo2 = end-tidal oxygen; Fico2 = inspired carbon dioxide fraction; Fio2 = inspired oxygen fraction; OAA/S = Observer’s Assessment of Alertness/Sedation scale; Spo2 = peripheral oxygen saturation.$

Study protocol of the randomized, controlled crossover study. The volunteers were randomized to start with either dexmedetomidine (D) or propofol (P). Schematic overview of the experimental protocol including conduction of the ventilatory tests to hypoxia and hypercapnia. ETco₂ = end-tidal carbon dioxide; ETo₂ = end-tidal oxygen; Fico₂ = inspired carbon dioxide fraction; Fio₂ = inspired oxygen fraction; OAA/S = Observer’s Assessment of Alertness/Sedation scale; Spo₂ = peripheral oxygen saturation.

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