Table 1.
Demographic data and baseline characteristics. Data are presented as mean (standard deviation), median (quartiles), and frequency (%)
| Failed weaning (n = 23) | Successful weaning (n = 41) | p value | |
|---|---|---|---|
| Age (years) | 54.4 (20.2) | 43.9 (15.6) | 0.057 |
| Male gender (%) | 19 (83%) | 21 (51%) | 0.012* |
| APACHE II | 18 (12, 23) | 19 (15, 22) | 0.17 |
| Duration of mechanical ventilation before SBT (days) | 3 (2, 6) | 3 (2, 4) | 0.17 |
| Number of previous SBT | 1 (1, 2) | 1 (0, 1) | 0.32 |
| Pre-SBT day balance (mL) | 215 (1102) | 20 (929) | 0.899 |
| SBT day balance (mL) | − 262 (713) | − 234 (782) | 0.481 |
| Blood hemoglobin (g dL−1) | 10(1.5) | 10.6(2.2) | 0.046* |
| Chronic obstructive pulmonary disease (%) | 5 (22%) | 1 (2%) | 0.02* |
| Abdominal surgery (%) | 10 (44%) | 20 (49%) | 0.44 |
APACHE Acute physiology and chronic health evaluation, SBT spontaneous breathing trial
*Denotes statistical significance