Table 1.
Baseline characteristics of patients at entry into the study
| Group A (n = 40) |
Group B (MI-E) (n = 35) |
P | |
|---|---|---|---|
| Age (years) | 62 ± 19.2 | 61.4 ± 15.1 | NS |
| Sex (M/F) | 21/19 | 28/7 | NS |
| SAPS II | 47.8 ± 17.7 | 45 ± 15 | NS |
| Duration of MV (days) | 9.4 ± 4.8 | 10.5 ± 4.1 | NS |
| Patients with chronic pulmonary disorders (n, %) |
9 (23%) | 7 (20%) | NS |
| Patients with hypoxemic respiratory failure (n,%) |
24 (60%) | 18 (52%) | NS |
| Reasons for MV (n) | |||
| COPD exacerbations | 6 | 4 | |
| Congestive heart failure | 5 | 4 | |
| Community-acquired pneumonia | 11 | 6 | |
| Hospital-acquired pneumonia | - | 2 | |
| Postoperative respiratory failure | 5 | 8 | |
| Acute lung injury | - | 1 | |
| Thoracic trauma | 6 | 3 | |
| Sepsis | 7 | 4 | |
| Cardiac arrest | - | 3 |
Data are presented as mean ± standard deviation. COPD, chronic obstructive pulmonary disease; MV, mechanical ventilation; NS, nonsignificant; SAPS II, New Simplified Acute Physiology Score.