| All patients | In-hospital death or need of mechanical ventilation within 7 days | Survived without need of mechanical ventilation | P-value |
---|---|---|---|---|
Generic variables | ||||
 Patients (n) | 121 | 49 | 72 | – |
 Age (years) | 73 ± 10 | 75 ± 11 | 72 ± 10 | 0.056 |
 Male sex [n(%)] | 70 (58) | 27 (60) | 43(55) | 0.708 |
 Obesity [n(%)] | 16 (13) | 3 (6) | 13 (18) | 0.098 |
 Charlson Comorbidity Index | 5.7 ± 2.1 | 5.8 ± 1.9 | 5.6 ± 2.3 | 0.580 |
 Body temperature (°C) | 36.8 ± 1.3 | 36.2 ± 1.3 | 37.1 ± 1.3 | < 0.001 |
 Death within 7 days | 34 (28) | 34 (100) | 0 | – |
 Death within 30 days | 53 (44) | 39 (80) | 14 (19) | < 0.001 |
 Median survival time of dead patients (days) | 4 [1–11] | 2 [1–5] | 12 [9–17] | < 0.001 |
Consciousness | ||||
 GCS | 13.9 ± 2.4 | 13.0 ± 3.4 | 14.5 ± 1.0 | 0.004 |
Hemodynamic variables | ||||
 MAP (mm Hg) | 71 ± 19 | 63 ± 15 | 77 ± 20 | < 0.001 |
 Heart rate (bpm) | 101 ± 22 | 104 ± 22 | 99 ± 22 | 0.268 |
Respiratory variables | ||||
 Respiratory rate | 24 ± 6 | 24 ± 6 | 23 ± 6 | 0.391 |
 SpO2 (%) | 95 ± 5 | 95 ± 6 | 96 ± 5 | 0.311 |
 PaO2 (mm Hg) | 89 ± 37 | 93 ± 47 | 86 ± 30 | 0.346 |
 P/F ratio | 272 ± 120 | 252 ± 126 | 285 ± 126 | 0.153 |
 Need of mechanical ventilation [n(%)] | 26 (21) | 26 (100) | 0 | – |
Other laboratory variables | ||||
 WBC (cells × 103/mm3) | 14.7 ± 8.0 | 14.6 ± 8.5 | 14.7 ± 7.6 | 0.933 |
 Hematocrit (%) | 35 ± 8 | 34 ± 8 | 35 ± 7 | 0.529 |
 Platelets (cells ×103/mm3) | 210 ± 126 | 248 ± 140 | 185 ± 109 | 0.009 |
 Serum sodium (mmol/l) | 137 ± 7 | 139 ± 8 | 135 ± 5 | 0.002 |
 Serum potassium (mmol/l) | 4.31 ± 1.05 | 4.41 ± 1.18 | 4.24 ± 0.95 | 0.395 |
 Arterial pH | 7.35 ± 0.13 | 7.30 ± 0.15 | 7.38 ± 0.10 | 0.002 |
 Plasma bicarbonate (mmol/l) | 19 ± 7 | 17 ± 8 | 20 ± 6 | 0.028 |
 Serum creatinine (mg/dl) | 2.2 [1.2–4.2] | 2.2 [1.4–4.3] | 2.1 [1.2–4.1] | 0.554 |
 BUN (mg/dl) | 42 [26–70] | 48 [31–72] | 37 [25–63] | 0.183 |
 Serum total bilirubin (mg/dl) | 0.7 [0.5–1.6] | 0.7 [0.6–1.6] | 0.8 [0.5–1.6] | 0.951 |