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Table 1 Respiratory data of the whole study population
| Variables | Successful group (S) | Unsuccessful group (U) | p value |
|---|---|---|---|
| (n = 22) | (n = 10) | ||
| Minute ventilation (MV), L | 12.33 (11.21-16.74) | 12.95 (11.78-13.2) | NS |
| RR (respiratory rate) breaths/min | 16 (15-18) | 17 (15-19) | NS |
| HR (heart rate) beats/min | 82 (77-86) | 83 (82-90) | NS |
| Tidal volume (VT ) ml | 676.2 (543.4-742.2) | 665 (583.4-834.8) | NS |
| pH | 7.41 (7.37-7.46) | 7.39 (7.37-7.44) | NS |
| PaCO2 mmHg | 41.23 (36.2-45.6) | 42.65 (38.3-46.8) | NS2aCOl |
| PaO2 mmHg | 132.3 (98.4-156.7) | 131.84 (94.84-148.2) | NS |
| Male/female (Number) | 17/5 | 8/2 | <0.05 |
| Age (years) | 65.7 (58-72.3) | 67.56 (56.2-74.45) | NS |
| APACHE II score | 16.4 (13.23-19.34) | 21.26 (18.76-24.7) | <0.05 |
| Weight (Kg) | 76.75 (64.3-82.54) | 75.84 (63.2-87.2) | NS |
| Time of ventilatory support before | |||
| weaning trial (hours) | 133.6 (112.5-157.3) | 175.6 (142.6-214.2) | <0.05 |
