inclusion criteria: * adults ≥ 18 years of age * awake patients without endotracheal intubation * suspected or confirmed infection of covid-19 * hypoxemia requiring oxygen supplementation ≥ 0.4 fio2 or ≥ 5l/min via nasal cannula * bilateral or unilateral chest infiltrates on x-ray or hrct * admitted to the icu or an acute care unit where hemodynamic and respiratory * willingness to comply with the protocol and provide written informed consent

inclusion criteria: * adults ≥ 18 years of age * awake patients without endotracheal intubation * suspected or confirmed infection of covid-19 * hypoxemia requiring oxygen supplementation ≥ 0.4 fio2 or ≥ 5l/min via nasal cannula * bilateral or unilateral chest infiltrates on x-ray or hrct * admitted to the icu or an acute care unit where hemodynamic and respiratory * willingness to comply with the protocol and provide written informed consent

inclusion criteria: adults ≥ 18 years of age awake patients without endotracheal intubation suspected or confirmed infection of covid-19 hypoxemia requiring oxygen supplementation ≥ 0.4 fio2 or ≥ 5l/min via nasal cannula bilateral or unilateral chest infiltrates on x-ray or hrct admitted to the icu or an acute care unit where hemodynamic and respiratory willingness to comply with the protocol and provide written informed consent

inclusion criteria: adults ≥ 18 years of age awake patients without endotracheal intubation suspected or confirmed infection of covid-19 hypoxemia requiring oxygen supplementation ≥ 0.4 fio2 or ≥ 5l/min via nasal cannula bilateral or unilateral chest infiltrates on x-ray or hrct admitted to the icu or an acute care unit where hemodynamic and respiratory willingness to comply with the protocol and provide written informed consent