

However, the underlying mechanics remain unclear. Actually, we newly observed that some mechanically ventilated COVID-19 patients recovering from severe ARDS (more than 14 days after invasive ventilation) often experienced evidently gradual increases in CO 2 retention and minute ventilation. Recently, several articles have mentioned that the early acute respiratory distress syndrome (ARDS) caused by COVID-19 significantly differ from those of ARDS due to other causes.

An ongoing outbreak of coronavirus disease 2019 (COVID-19) is spreading globally.
