Fig. 1From: Use of high flow nasal cannula in patients with acute respiratory failure in general wards under intensivists supervision: a single center observational studyStudy flowchart for application of HFNC in general wards under ICU-physician surveillance. HFNC high flow nasal cannula; FiO2 inspired fraction of O2; PaO2 arterial partial pressure of O2; PaCO2 arterial partial pressure of CO2; SpO2 peripheral saturation of Hb; PEEP positive end-expiratory pressure; ICU Intensive Care UnitBack to article page