Demographic and clinical data of the 231 chronically critically ill patients at admission to the respiratory care unit
| Patients | |
| Male/female | 149/82 |
| Age years | 62.76±15.03 |
| Medical/surgical cause of critical illness | 130/101 |
| Charlson index | 1.73±1.74 |
| APACHE II | 12.49±5.34 |
| Intensive care stay days | 44.72±23.05 |
| Mechanical ventilation in intensive care days | 36.74±23.93 |
| pH | 7.35±0.14 |
| PaO2 mmHg | 97.09±49.78 |
| PaCO2 mmHg | 46.65±9.44 |
| FIO2 | 0.43±0.16 |
| Leukocytes per L | 10 152.78±3612.81 |
| Neutrophils % | 75.42±11.57 |
| Haemoglobin g·dL−1 | 9.66±1.49 |
| Haematocrit % | 29.21±4.57 |
| Platelets per L | 291 278.35±0.01 |
| Sodium mmol·L−1 | 138.73±5.50 |
| Potassium mmol·L−1 | 4.03±0.52 |
| Blood urea nitrogen mg·dL−1 | 52.46±38.98 |
| Creatinine mg·dL−1 | 0.76±0.56 |
| Serum albumin g·dL−1 | 3.05±0.57 |
| C-reactive protein mg·L−1 | 50.92±49.63 |
Data are presented as n or mean±sd. APACHE: Acute Physiology and Chronic Health Evaluation; PaO2: arterial oxygen tension; PaCO2: arterial carbon dioxide tension; FIO2: inspiratory oxygen fraction.