There is a high risk of transmission of COVID-19 to healthcare workers. In a recent cohort, 29% of the patients hospitalized were healthcare workers. Among the WHO's primary strategic objectives for the response to COVID-19, the first was to limit human-to-human transmission, including reducing secondary infections among close contacts and health care workers. Automated oxygen titration, weaning and monitoring (FreeO2 device) may be a solution to reduce the number of interventions of healthcare workers related to oxygen therapy, to reduce complications related to oxygen and to improve monitoring.
Other: Standard administration of oxygen flow
The investigator recommended SpO2 target of 90-94%. The investigator will recommend that low/high SpO2 alarms be set at 88% and 96% if continuous oximetry is used.
In this group the SpO2 was recorded any time with FreeO2 device - recording mode
Device: Automated oxygen administration - FreeO2
In this group, oxygen administration will be delivered with FreeO2 (automated oxygen titration) with SpO2 target set at 92% (to maintain oxygenation in the recommended SpO2 target: 90-94%)
- Age> 18 years old
- patients with acute respiratory failure related to suspected community acquired pneumonia (viral and non viral) requiring oxygen therapy < 6 L/min (or FiO2< 0.50) (to maintain SpO2 between 90 and 94% SpO2) without criteria for immediate intubation or ICU transfer.
- Patients hospital admission < 72 hours
- shock state,
- no SpO2 signal available,
- patient agitation,
- pH < 7.30 (if blood gas available)
- PaCO2 > 50 mmHg, (if blood gas available) or chronic hypercapnia history
- Non invasive respiratory support (NIV, High flow Nasal Therapy (HFNT)) at study inclusion
- Withdrawal of life support or palliation as the goal of care
- patients' or next of kin refusal to participate to the study