Table 3.
Risk factors for extubation failure during SBT in the study population.
| Failed | Successful | P value | |
|---|---|---|---|
| Age (yrs): median (range) | 1 (0.2–13) | 0.87 (0.08–8) | 0.213 |
| Sex: | |||
| Female | 4 (30.8%) | 9 (69.2%) | 0.553 |
| Male | 8 (34.8%) | 15 (65.2%) | |
| Tachypnea: number (%) | 6 (66.7%) | 3 (33.3%) | 0.022 |
| Tachycardia: number (%) | 9 (64.3%) | 5 (35.7%) | 0.003 |
| Hypertension: number (%) | 5 (45.5%) | 6 (54.5%) | 0.259 |
| Spontaneous tidal volume (mL/kg/sec): median (range) | 5.45 (1.2–11.5) | 6.35 (3.2–12) | 0.298 |
| Increased work of breathing: number (%) | 8 (61.5%) | 5 (38.5%) | 0.010 |
| Increase need for suction: number (%) | 2 (50.0%) | 2 (50.0%) | 0.407 |
| Bronchodilators: number (%) | 4 (23.5%) | 13 (76.5%) | 0.238 |
| Trial type: number (%) | |||
| PS | 6 (31.6%) | 13 (68.4%) | 0.813 |
| ATC | 6 (35.3%) | 11 (64.7%) | |
| Failed PS trial: number (%) | 5 (56%) | 4 (44%) | 0.259 |
| Failed ATC trial: number (%) | 5 (83%) | 1 (17%) | 0.03 |
| Pretrial rate: median (range) | 8 (6–19) | 10 (4–30) | 0.383 |
| Pretrial FIO2: mean ± SD | 43.75 ± 6.78 | 40.42 ± 4.87 | 0.099 |
| Causes of M.V.: | |||
| Acute respiratory failure | 6 (35.3%) | 11 (64.7%) | |
| Neurological dysfunction | 4 (36.4%) | 7 (63.6%) | 0.850 |
| Shock and sepsis | 2 (25%) | 6 (75%) | |
| Duration of M.V. before trial: median (range) | 14.5 (3–33) | 7.5 (2–40) | 0.207 |