Acute respiratory distress syndrome (ARDS) is characterized by pulmonary edema, inflammatory cell accumulation, and severe hypoxia, resulting from a strong downregulation of ACE2.

“acute respiratory distress syndrome and which is a complication of severe Koba 19 illness and was also a complication of the original SARS is the most severe form of a wide spectrum of pathological processes designated as acute lung injury so acute respiratory distress syndrome is characterized by pulmonary edema due to increase vascular permeability the accumulation of inflammatory cells and severe hypoxia acute lung injury result in a very strong down regulation of a stew which then causes more severe injury”