Fig. 1From: Proceedings of Réanimation 2020, the French Intensive Care Society International CongressRepeated measures of transcutaneous PCO2 (PtcCO2) before and after the beginning of the mechanical ventilation (MV) according to the preoxygenation method. SOT: Standard oxygen therapy; HFNCOT: High flow nasal cannula oxygen therapy; NIV: Non invasive ventilation. *p < 0.05Back to article page