Comparison of infants who did and did not fail extubation
| Failure (n=7) | Success (n=29) | p Value | |
|---|---|---|---|
| Data are median (range). | |||
| CRS, compliance of the respiratory system; IP, inspiratory pressure; MIP, maximum inspiratory pressure; PIP, peak inspiratory pressure; Fio2, inspired oxygen concentration. | |||
| Gestational age (weeks) | 27 (25–31) | 32 (27–36) | <0.01 |
| Birth weight (g) | 918 (685–1752) | 1874 (938–2856) | <0.01 |
| Postnatal age (days) | 8 (2–14) | 2 (1–9) | <0.01 |
| Max PIP (cm H2O) | 22 (18–23) | 20 (15–27) | NS |
| Max Fio2 | 0.65 (0.31–0.78) | 0.44 (0.21–0.94) | NS |
| PIP before extubation | 12 (11–15) | 12 (10–16) | NS |
| Fio2 before extubation | 0.30 (0.22–0.38) | 0.23 (0.21–0.36) | <0.05 |
| CRS (ml/cm H2O/kg) | 0.79 (0.43–1.16) | 0.77 (0.32–2.18) | NS |
| Inspiratory pressures | |||
| Mean IP (cm H2O) | 11.3 (7.3–19.7) | 16.7 (6.6–57.2) | <0.03 |
| Max IP (cm H2O) | 15.7 (12.7–25.1) | 23.3 (9.2–77.0) | NS |
| Max MIP (cm H2O) | 17.3 (12.7–30) | 32.7 (20.0–77.0) | <0.01 |
| Mean MIP (cm H2O) | 14.3 (9.9–21.2) | 24.8 (14.1–69.3) | <0.01 |