inclusion criteria: the diagnosis of a current sars-cov2 infection (confirmed rt-pcr test or antigen test [allowed in poland, with sensitivity ≥90 and specificity ≥97]); hospitalization in the oxygen sector of the temporary hospital in szczecin; pneumonia during sars-cov2 infection; ards (pao 2 / fio 2 ratio ≤300); oxygen flow 8-12 l / min on mask with reservoir and ≤ 60 mmhg pao2 and / or spo2 < 92%; tno current indications for treatment in the icu; permisson of the patient.

inclusion criteria: the diagnosis of a current sars-cov2 infection (confirmed rt-pcr test or antigen test [allowed in poland, with sensitivity ≥90 and specificity ≥97]); hospitalization in the oxygen sector of the temporary hospital in szczecin; pneumonia during sars-cov2 infection; ards (pao 2 / fio 2 ratio ≤300); oxygen flow 8-12 l / min on mask with reservoir and ≤ 60 mmhg pao2 and / or spo2 < 92%; tno current indications for treatment in the icu; permisson of the patient.