Table 2.
Clinical data related with current hospitalization and mechanical ventilation (n = 263)
| Characteristic – n (%) | Total (n = 263) | VAP (n = 32) | Non-VAP (n = 231) | P value |
| Length of hospitalization (d)1 | 22 (14, 34) | 32 (22, 57) | 21 (14, 32) | 0.0001 |
| Length of ICU stay (d)1 | 8 (5, 13) | 18 (9, 27) | 8 (5, 12) | < 0.0001 |
| Causes for MV | ||||
| Septic shock | 91 (34.6) | 10 (31.3) | 81 (35) | 0.843 |
| Post-surgical procedure | 42 (16) | 8 (25) | 34 (14.7) | 0.193 |
| Respiratory failure secondary to pneumonia | 37 (14) | 3 (9.4) | 34 (14.7) | 0.589 |
| Hypovolemic shock | 37 (14) | 8 (25) | 29 (12.5) | 0.09 |
| Neurologic cause | 13 (4.9) | 0 | 13 (5.6) | N/A |
| Lung tumor activity | 7 (2.7) | 1 (3.1) | 6 (2.6) | 0.601 |
| Post-CPR | 7 (2.7) | 1 (3.1) | 6 (2.6) | 0.601 |
| Acute pulmonary edema | 6 (2.3) | 0 | 6 (2.6) | N/A |
| Malignant central airway obstruction | 5 (1.9) | 0 | 5 (2.2) | N/A |
| Cardiac failure | 3 (1.1) | 1 (3.1) | 2 (0.8) | 0.323 |
| Bronchospasm | 2 (0.8) | 0 | 2 (0.8) | N/A |
| Pulmonary embolism | 2 (0.8) | 0 | 2 (0.8) | N/A |
| TRALI | 1 (0.4) | 0 | 1 (0.4) | N/A |
| Other causes | 10 (3.8) | 0 | 10 (4.3) | N/A |
| SOFA at ICU admission2 | 8.3 ± 3.4 | 8.7 ± 2.8 | 8.3 ± 3.4 | 0.477 |
| Days of mechanical ventilation1 | 8 (4, 12) | 16 (9, 27) | 7 (4, 11) | < 0.0001 |
| Tracheostomy | 68 (25.9) | 19 (59.4) | 49 (21.2) | < 0.0001 |
| Re-intubation | 27 (10.3) | 7 (21.9) | 20 (8.7) | 0.03 |
| Mortality at 60 d | 116 (44.1) | 9 (28.1) | 72 (31.7) | 0.839 |
1
Median (Interquartile range).
2
mean ± SD. CPR: Cardiopulmonary resuscitation; N/A: Not applicable; TRALI: Transfusion-related acute lung injury; ICU: Intensive care unit; SOFA: Sequential Organ Failure Assessment score; MV: Mechanical ventilation; VAP: Ventilator-associated pneumonia.