1. The diagnosis of a current SARS-CoV2 infection (confirmed RT-PCR test or antigen test \[allowed in Poland, with sensitivity ≥90 and specificity ≥97\]);
2. Hospitalization in the Oxygen Sector of the Temporary Hospital in Szczecin;
3. Pneumonia during SARS-CoV2 infection;
4. ARDS (PaO 2 / FiO 2 ratio ≤300);
5. Oxygen flow 8-12 l / min on mask with reservoir and ≤ 60 mmHg paO2 and / or SpO2 \< 92%;
6. TNo current indications for treatment in the ICU;
7. Permisson of the patient.
You may not be if
1. Probable lack of cooperation with patient;
2. Severe Disease disease, eg generalized neoplastic disease;
