Table 1.
General characteristics of patients at baseline
| Median value | Interquartile range | |
|---|---|---|
| Age (years) | 77 | 71–80 |
| PaO2 (mmHg) | 57.15 | 52.92–66.15 |
| PaCO2 (mmHg) | 37.65 | 33.92–43.52 |
| HCO3 (mmol/L) | 26.35 | 24.10–29.07 |
| Haemoglobin (g/dL) | 14 | 12.6–15.2 |
| Leukocyte count (103/mm3) | 11.10 | 7.9–13.7 |
| Albumin (g/dL) | 3.6 | 3.15–3.9 |
| Total protein (g/dL) | 6.5 | 5.9–7.1 |
| Glucose (mg/dL) | 124 | 100–155 |
| Sodium (mEq/L) | 139 | 137–141 |
| Potasium (mEq/L) | 4.3 | 4.02–4.7 |
| Blood urea (mg/dL) | 47 | 38–58 |
| Creatinine (mg/dL) | 0.9 | 0.7–1.0 |
| NTproBNP (pg/mL) | 573.76 | 199.32–1348.6 |
| Cystatin (mg/dL) | 1.11 | 0.95–1.43 |
PaO2 = arterial oxygen pressure; PaCO2 = arterial carbon dioxide pressure; NTproBNP = N-terminal fragment of pro BNP