COVID-19 Pneumonia: A Complex Management Tailored on the Disease Stage

Despite falling in many respects under the Berlin definition of acute respiratory distress syndrome (ARDS) [1], COVID-19 pneumonia is not a “Typical” ARDS. The same disease actually presents itself with impressive non-uniformity. Two disease types or stages can be identified: the early, “non-ARDS”, and the advanced, “ARDS” [2-5]. The staging of the disease is crucial to decide the right therapeutic approach