According to the 2012 Berlin criteria, ARDS is divided into mild, moderate and severe levels. At the same time, the Conference also provides treatment recommendations corresponding to the severity of the disease, including artificial ventilation strategies, the use of sedatives, muscle relaxants and other supportive treatments.

Acute Respiratory Distress Syndrome (ARDS) is a clinical syndrome characterized by acute hypoxemia, appearing suddenly and progressing rapidly after a lung disease or disease in another organ, with chest X-ray showing bilateral diffuse lesions.