Confirmation of 2019-nCoV infection by RT-PCR Diagnosis of ARDS according to the Berlin definition of ARDS Requiring supplemental oxygen, PaO2/oxygen absorption concentration (FiO2) ≤ 300MMHG Pulmonary imaging shows that the focused progress > 50% in 24-48 hours Mild to Moderate 2019-nCoV pneumonia/ stay in the ICU <48 hours SOFA score between 2-3 point Pneumonia that is judged by chest radiograph or CT

Confirmation of 2019-nCoV infection by RT-PCR Diagnosis of ARDS according to the Berlin definition of ARDS Requiring supplemental oxygen, PaO2/oxygen absorption concentration (FiO2) ≤ 300MMHG Pulmonary imaging shows that the focused progress > 50% in 24-48 hours Mild to Moderate 2019-nCoV pneumonia/ stay in the ICU <48 hours SOFA score between 2-3 point Pneumonia that is judged by chest radiograph or CT