Fig. 2
High-flow nasal cannula (HFNC) oxygen therapy applied after extubation decreases respiratory rate (A), has no effect on tidal volume (B), it increases PaO2/FiO2 ratio (C), and it did not modify arterial carbon dioxide levels (D), compared to standard oxygen. Horizontal red lines represent mean values. P values were calculated using a two-way repeated measures ANOVA