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  Indian J Med Microbiol
 

Figure 1: Oxygen therapy algorithm for COVID-19 patients. RR: Respiratory rate; SpO2: Oxygen saturation; PaO2: Partial pressure of oxygen; FiO2: Fraction of inspired oxygen; L: Liter; HFNC: High-flow nasal cannula; NIV: Noninvasive ventilation

Figure 1: Oxygen therapy algorithm for COVID-19 patients. RR: Respiratory rate; SpO<sub>2</sub>: Oxygen saturation; PaO<sub>2</sub>: Partial pressure of oxygen; FiO<sub>2</sub>: Fraction of inspired oxygen; L: Liter; HFNC: High-flow nasal cannula; NIV: Noninvasive ventilation