Table 1. Demographics of patients.
| Characteristic | Total (n = 61) | Survivors (n = 27) | Non-survivors (n = 34) |
|---|---|---|---|
| Males, n (%) | 39 (63.9) | 18 (66.7) | 21 (61.8) |
| Age, years | 65 (56.0–78.5) | 57 (46–67) | 73 (64–81) |
| Source | |||
| Emergency Department, n (%) | 21 (34.4) | 12 (44.4) | 9 (26.5) |
| General Ward, n (%) | 23 (37.7) | 7 (25.9) | 16 (47.1) |
| Other hospital, n (%) | 17 (27.9) | 8 (29.6) | 9 (26.5) |
| Department | |||
| Medicine, n (%) | 49 (80.3) | 23 (85.2) | 26 (76.5) |
| Surgery, n (%) | 12 (19.7) | 4 (14.8) | 8 (23.5) |
| Cause of ARDS | |||
| Pneumonia, n (%) | 55 (90.2) | 24 (88.9) | 31 (91.2) |
| Sepsis other than lung infection, n (%) | 6 (9.8) | 3 (11.1) | 3 (8.8) |
| APACHE II score | 23 (18–28) | 23 (16–24) | 26 (21–33) |
| SOFA score | 11 (8–13) | 10 (7–13) | 11 (9–13) |
| Lung injury score | 3.0 (2.50–3.25) | 3.0 (2.50–3.25) | 2.88 (2.50–3.25) |
| VT, ml/kg PBW | 7.4 (6.7–8.0) | 7.5 (6.7–8.4) | 7.3 (6.8–7.9) |
| Arterial blood gas (Day 0) | |||
| pH | 7.39 (7.34–.44) | 7.41 (7.36–7.45) | 7.37 (7.32–7.43) |
| PaCO2, cm H2O | 34.0 (28.6–39.7) | 31.6 (29.2–38.9) | 34.2 (28.4–42.7) |
| PaO2, cm H2O | 81.0 (65.3–114.6) | 81.7 (65.4–131.8) | 79.2 (63.4–107.5) |
| HCO3, mEq/l | 20.6 (18.3–23.7) | 20.9 (18.3–26.0) | 20.1 (17.5–23.6) |
| FiO2 | 0.95 (0.65–1.0) | 0.8 (0.7–1.0) | 1.0 (0.65–1.0) |
| PaO2/FiO2 mmHg | 114.7 (76.0–166.8) | 111.8 (73.6–172.3) | 116.5 (78.4–151.5) |
| NT-proBNP, pg/ml | 2011 (579–7216) | 1190 (398–3530) | 3956 (771–9838) |
| Oxygenation based on Berlin criteria | |||
| Mild ARDS, n (%) | 7 (11.5) | 1 (3.7) | 6 (17.6) |
| Moderate ARDS, n (%) | 29 (47.5) | 13 (48.1) | 16 (47.1) |
| Severe ARDS, n (%) | 25 (41.0) | 13 (48.1) | 12 (35.3) |
| Organ dysfunction | |||
| Cardiovascular, n (%) | 46 (75.4) | 19 (70.4) | 27 (79.4) |
| Kidney, n (%) | 21 (34.4) | 5 (18.5) | 16 (47.1) |
| Metabolic, n (%) | 15 (24.6) | 5 (18.5) | 10 (29.4) |
| Hematologic, n (%) | 14 (23.0) | 7 (25.9) | 7 (20.6) |
| Hepatic, n (%) | 2 (3.3) | 1 (3.7) | 1 (2.9) |
| Number of comorbidities | 1.0 (1.0–2.0) | 1 (0–2) | 1 (1–2) |
| Number of organ dysfunctions | 1.0 (1.0–2.0) | 1 (1–2) | 2 (1–3) |
| Length of ICU stay, days | 16.0 (10.0–21.0) | 19 (13–35) | 13 (10–17) |
| Length of hospital stay, days | 20.0 (13.5–35.0) | 35 (28–50) | 15 (10–20) |
Values are median (IQR) unless otherwise indicated.