inclusion criteria: * diagnosed with acute respiratory distress syndrome due to sars-cov-2 infection (severe covid-19), according to the following criteria: 1. demonstration of sars-cov-2 rnaemia in nasopharyngeal swap or bronchio-alveolar lavage (bal) 2. a ratio of the partial pressure of oxygen (pao2) to the fraction of inspired oxygen (fio2), pao2/fio2, ≤300 mmhg * mild ards (pao2/fio2, ≤300 and \>200 mm hg); * moderate ards (pao2/fio2, ≤200 and \>100 mm hg); * severe ards (pao2/fio2, ≤100 mm hg); 3. pulmonary infiltrates suggestive of sars-cov-2-related ards: e.g., bilateral infiltrates at chest x-ray or b-lines at lung us scan. * dated and signed informed consent from patient or legal represantative.

inclusion criteria: * diagnosed with acute respiratory distress syndrome due to sars-cov-2 infection (severe covid-19), according to the following criteria: 1. demonstration of sars-cov-2 rnaemia in nasopharyngeal swap or bronchio-alveolar lavage (bal) 2. a ratio of the partial pressure of oxygen (pao2) to the fraction of inspired oxygen (fio2), pao2/fio2, ≤300 mmhg * mild ards (pao2/fio2, ≤300 and \>200 mm hg); * moderate ards (pao2/fio2, ≤200 and \>100 mm hg); * severe ards (pao2/fio2, ≤100 mm hg); 3. pulmonary infiltrates suggestive of sars-cov-2-related ards: e.g., bilateral infiltrates at chest x-ray or b-lines at lung us scan. * dated and signed informed consent from patient or legal represantative.

inclusion criteria: diagnosed with acute respiratory distress syndrome due to sars-cov-2 infection (severe covid-19), according to the following criteria: demonstration of sars-cov-2 rnaemia in nasopharyngeal swap or bronchio-alveolar lavage (bal) a ratio of the partial pressure of oxygen (pao2) to the fraction of inspired oxygen (fio2), pao2/fio2, ≤300 mmhg mild ards (pao2/fio2, ≤300 and >200 mm hg); moderate ards (pao2/fio2, ≤200 and >100 mm hg); severe ards (pao2/fio2, ≤100 mm hg); pulmonary infiltrates suggestive of sars-cov-2-related ards: e.g., bilateral infiltrates at chest x-ray or b-lines at lung us scan. dated and signed informed consent from patient or legal represantative.

inclusion criteria: diagnosed with acute respiratory distress syndrome due to sars-cov-2 infection (severe covid-19), according to the following criteria: demonstration of sars-cov-2 rnaemia in nasopharyngeal swap or bronchio-alveolar lavage (bal) a ratio of the partial pressure of oxygen (pao2) to the fraction of inspired oxygen (fio2), pao2/fio2, ≤300 mmhg mild ards (pao2/fio2, ≤300 and >200 mm hg); moderate ards (pao2/fio2, ≤200 and >100 mm hg); severe ards (pao2/fio2, ≤100 mm hg); pulmonary infiltrates suggestive of sars-cov-2-related ards: e.g., bilateral infiltrates at chest x-ray or b-lines at lung us scan. dated and signed informed consent from patient or legal represantative.

inclusion criteria: - diagnosed with acute respiratory distress syndrome due to sars-cov-2 infection (severe covid-19), according to the following criteria: 1. demonstration of sars-cov-2 rnaemia in nasopharyngeal swap or bronchio-alveolar lavage (bal) 2. a ratio of the partial pressure of oxygen (pao2) to the fraction of inspired oxygen (fio2), pao2/fio2, ≤300 mmhg - mild ards (pao2/fio2, ≤300 and >200 mm hg); - moderate ards (pao2/fio2, ≤200 and >100 mm hg); - severe ards (pao2/fio2, ≤100 mm hg); 3. pulmonary infiltrates suggestive of sars-cov-2-related ards: e.g., bilateral infiltrates at chest x-ray or b-lines at lung us scan. - dated and signed informed consent from patient or legal represantative.

inclusion criteria: - diagnosed with acute respiratory distress syndrome due to sars-cov-2 infection (severe covid-19), according to the following criteria: 1. demonstration of sars-cov-2 rnaemia in nasopharyngeal swap or bronchio-alveolar lavage (bal) 2. a ratio of the partial pressure of oxygen (pao2) to the fraction of inspired oxygen (fio2), pao2/fio2, ≤300 mmhg - mild ards (pao2/fio2, ≤300 and >200 mm hg); - moderate ards (pao2/fio2, ≤200 and >100 mm hg); - severe ards (pao2/fio2, ≤100 mm hg); 3. pulmonary infiltrates suggestive of sars-cov-2-related ards: e.g., bilateral infiltrates at chest x-ray or b-lines at lung us scan. - dated and signed informed consent from patient or legal represantative.