Fig. 3From: The experience of high-flow nasal cannula in hospitalized patients with 2019 novel coronavirus-infected pneumonia in two hospitals of Chongqing, ChinaRespiratory rate, PaO2/FiO2 and FiO2 at baseline, 1–2 h and termination of HFNC. *p < 0.05 for comparisons between two groupsBack to article page