Fig. 1From: Nasal high flow higher than 60 L/min in patients with acute hypoxemic respiratory failure: a physiological studyPatient comfort by visual numerical scale during NHF steps. Comfort during NHF-1.5 was significantly lower compared to NHF-1 and NHF-0.5. Post hoc correction was performed using Bonferroni test (#p < 0.05 vs. NHF-1.5)Back to article page