Table 2 Outcome variables
Variables | NIV-PS n = 34 | NIV-NAVA n = 30 | P value |
|---|---|---|---|
FiO2 | 0.5, 0.4–0.55 | 0.5, 0.5–0.6 | 0.084 |
PEEP, cmH2O | 7, 6–8 | 7.5 (7–8) | 0.070 |
Peak airway pressure, cmH2O | 16, 13–18 | 13, 12–14 | 0.003 |
Gain, mV | na | 0.8, 0.7–1.2 | |
Pressurization time, ms | 100, fixed | na | |
Inspiratory trigger | 5 | 0.5 mV | |
Expiratory cycling, % | 45, (35–55) | 70% of Edi peak decay | |
Tidal volume, ml/Kg/PBW | 9, 8–9.5 | 8, 7–11 | 0.065 |
Intubation rate, n (%) | 16(47) | 4(13) | 0.006 |
Causes to NRS failure | |||
Persistent Hypoxia, n (%) | 14 (45) | 4 (13) | 0.040 |
Intolerance, n (%) | 2 (5) | 0 (0) | 1 |
Days on invasive ventilation, n | 7 (4–10) | 3 (3–4) | 0.001 |
VAP, n (%) | 5 (20) | 0 (0) | 0.004 |
CLABSI, n (%) | 1 (5) | 0 (0) | 1 |
Devices per pts, n | 2 (0.75–4) | 1 (0–2) | 0.032 |
PICU LOS, days | 8.5 (6–9.4) | 5 (4–7) | 0.002 |
Hospital LOS, days | 12.3 (10–17) | 8.5 (7–12) | 0.013 |
PICU mortality, n (%) | 0 (0) | 0 (0) | 1 |
Hospital mortality, n (%) | 0 (0) | 0 (0) | 1 |
Two months mortality, n (%) | 0 (0) | 0 (0) | 1 |
Six months mortality, n (%) | 0 (0) | 0 (0) | 1 |