Characteristics | Total patients (n = 65) | Survivors (n = 45) | Non-survivors (n = 20) | p value |
---|---|---|---|---|
Age (years) | 57.5 ± 11.8 | 56.7 ± 13.0 | 59.3 ± 7.7 | 0.322 |
Gender (male/female) | 40/25 | 27/18 | 13/7 | 0.702 |
BMI (kg/m2) | 22.4 ± 4.7 | 27.2 ± 5.1 | 24.8 ± 3.5 | 0.057 |
Severity index | ||||
 APACHE II score | 24.4 ± 8.7 | 22.0 ± 8.1 | 29.8 ± 7.7 | 0.001* |
 SOFA score | 11.7 ± 3.6 | 10.9 ± 3.1 | 12.9 ± 3.9 | 0.062 |
 PSI | 115.3 ± 45.0 | 104.5 ± 38.9 | 138.4 ± 49.3 | 0.004* |
 CURB-65 score | 2.2 ± 1.1 | 2.2 ± 1.2 | 2.4 ± 1.0 | 0.537 |
Influenza type | Â | Â | Â | 0.358 |
 Influenza A | 52 (80%) | 34 (75.6%) | 18 (90.0%) |  |
 Influenza B | 4 (6%) | 3 (6.7%) | 1 (5%) |  |
 Undetermined | 9 (14%) | 8 (17.8%) | 1 (5%) |  |
Laboratory data | ||||
 WBC (103/mm3) | 9.9 ± 6.7 | 9.5 ± 6.2 | 10.9 ± 7.8 | 0.433 |
 Lactate (mg/dL) | 26.8 ± 29.6 | 21.9 ± 23.8 | 36.2 ± 37.4 | 0.087 |
 Albumin (g/dL) | 3.1 ± 0.5 | 2.9 ± 0.4 | 2.7 ± 0.8 | 0.521 |
 Creatinine (mg/dL) | 1.8 ± 2.3 | 1.2 ± 0.9 | 3.1 ± 3.6 | 0.040* |
 Total bilirubin (mg/dL) | 0.8 ± 0.7 | 0.8 ± 0.7 | 0.7 ± 0.9 | 0.694 |
Renal replacement therapy (n, %) | 10 (15%) | 2 (4.4%) | 8 (40.0%) | 0.000* |
PaCO2 (mm Hg) | 48.5 ± 17.6 | 47.6 ± 19.0 | 50.7 ± 14.2 | 0.510 |
PaO2/FiO2 ratio (mm Hg) | 95.9 ± 54.5 | 102.3 ± 59.8 | 81.3 ± 37.6 | 0.153 |
Tidal volume (ml/kg PBW) | 7.7 ± 2.0 | 7.7 ± 1.9 | 7.8 ± 2.4 | 0.985 |
PEEP (cm H2O) | 13.7 ± 3.6 | 13.5 ± 3.9 | 14.2 ± 3.0 | 0.546 |
Peak airway pressure (cm H2O) | 30.7 ± 4.2 | 31.0 ± 4.5 | 30.1 ± 3.6 | 0.468 |
Dynamic driving pressure (cm H2O) | 17.1 ± 4.7 | 16.9 ± 3.5 | 16.6 ± 4.2 | 0.704 |
Dynamic compliance (ml/cm H2O) | 27.1 ± 8.5 | 26.1 ± 7.9 | 29.1 ± 9.7 | 0.200 |