Table 2.
The number of patients who are reassigned to a new grade of acute respiratory distress syndrome (ARDS, Mild: 200–300 mmHg, Moderate: 100–200 mmHg, and Severe: < 100 mmHg) during a change in ventilatory strategy
| 1st Strategy | 2nd Strategy | ||
|---|---|---|---|
| HFNC | NIV | MV | |
| A: Decreased ARDS grade | |||
| HFNC | – | 42 (55%) | 25 (74%) |
| NIV | 1 (2%) | – | 10 (28%) |
| MV | 1 (3%) | 1 (8%) | – |
| B: Increased ARDS grade | |||
| HFNC | – | 1 (1%) | 1 (3%) |
| NIV | 20 (34%) | – | 5 (14%) |
| MV | 14 (40%) | 1 (8%) | – |
The changes were from the first strategy to the second strategy that were either of high-flow nasal cannula (HFNC), non-invasive ventilation (NIV) or invasive mechanical ventilation (MV). Patients who decrease their ARDS grade, that improve in oxygenation are reported in A, and those who increase ARDS grade, or show worse oxygenation in B