Patients’ characteristics
| Number of patients | 25 |
| Age, years | 71 (56–77) |
| Gender male, n (%) | 19 (76) |
| SAPS II at admission | 45 (33–57) |
| SOFA score at admission | 7(4–9) |
| CRP at admission, mg/L | 17.7 (7.6–27.2) |
| PCT at admission, mg/L | 0.42 (0.19–2.95) |
| LIS | 2.3 (2.1–2.8) |
| ARDS cause, n (%) | |
| Pneumonia | 13 (52) |
| Acute pancreatitis | 3 (12) |
| Non-pulmonary originated sepsis | 3 (12) |
| Trauma | 5 (20) |
| Transfusion-related acute lung Injury | 1 (4) |
| ARDS severity, n (%) | |
| Mild | 9 (36) |
| Moderate | 15 (60) |
| Severe | 1 (4) |
| Respiratory parameters | |
| Tidal volume, mL | 500 (435–555) |
| PIP, cmH2O | 23 |
| Pressure plateau, cmH2O | 20 (17-23) |
| PEEP, cmH2O | 8 (7-10) |
| Driving pressure, cmH2O | 12 (9-15) |
| Outcomes | |
| MV support, days | 15 (8-20) |
| Ventilation-free days | 2 (1-4) |
| Survivors, n (%) | 22 (88) |
Continuous variables are presented as median and IQR whereas categorical variables are presented as number and %.
ARDS, acute respiratory distress syndrome; CRP, C-reactive protein; LIS, lung injury score; MV, mechanical ventilation; PCT, procalcitonin; PEEP, positive end-expiratory pressure; PIP, peak inspiratory pressure; SAPS II, simplified acute physiology score; SOFA, sepsis-related organ failure assessment.