Figure 4.

Oxygenation and blood gases during Transnasal humidified rapid‐insufflation ventilatory exchange (THRIVE) and mechanical ventilation peri‐ and post‐operatively. Arterial oxygen partial pressure (P_aO₂) (A), peripheral oxygen saturation (S_pO₂) (B) and arterial carbon dioxide partial pressure (P_aCO₂) (C) during oxygenation with THRIVE or mechanical ventilation. Arterial oxygen partial pressure (P_aO₂) (D) and arterial carbon dioxide partial pressure (P_aCO₂) (E) post‐operatively after THRIVE or mechanical ventilation. The Y‐axis in B has been adjusted to display maximum resolution of data. Data are presented as mean (SD) in A‐E. BL, Baseline values before pre‐oxygenation; Ind, at anaesthesia induction