Table 2.
Mechanical Ventilation and Blood Gas Data, N=260
| N | n (%) | |
|---|---|---|
| Non-invasive ventilation prior to intubation | 254 | 42 (17) |
| Initial ventilator mode in PICU | 257 | |
| Pressure control | 162 (63) | |
| Volume control | 44 (17) | |
| Pressure-regulated volume control | 36 (14) | |
| Pressure support with PEEP | 15 (6) | |
| Final ventilator mode a | 248 | |
| Pressure control | 84 (34) | |
| Volume control | 50 (20) | |
| Pressure-regulated volume control | 25 (10) | |
| Pressure support with PEEP | 89 (36) | |
| Non-invasive ventilation immediately post-extubation a | 250 | 16 (6) |
| Non-invasive ventilation anytime post-extubation a | 250 | 28 (11) |
| N | median (IQR) | |
| Blood gas values prior to intubation | ||
| pH | 126 | 7.26 (7.17–7.35) |
| PCO2 (torr)b | 126 | 52 (38–68) |
| PaO2 (torr)c | 49 | 109 (65–166) |
| Initial ventilator settings in PICU | ||
| Inspired O2 (%) | 256 | 70 (40–100) |
| Rate (/min)d | 240 | 16 (12–20) |
| Peak inspiratory pressure (cmH2O)e | 161 | 30 (25–36) |
| Tidal volume (ml/kg)f | 77 | 8 (7–9) |
| Inspiratory time (seconds)e | 150 | 0.9 (0.8–1.0) |
| PEEP (cmH2O) | 255 | 5 (5–6) |
| Blood gas values prior to extubation a | ||
| pH | 236 | 7.41 (7.36–7.45) |
| PCO2 (torr)b | 236 | 41 (36–46) |
| PaO2 (torr)c | 156 | 91 (73–110) |
| Final ventilator settings a | ||
| Inspired O2 (%) | 248 | 40 (30–40) |
| PEEP (cmH2O) | 247 | 5 (5–5) |
| Duration of mechanical ventilation, hours a | 216 | 42 (18–84) |
| Duration of non-invasive mechanical ventilation post-extubation, hours | 28 | 27 (17–70) |
a
Survivors only
b
Includes arterial, capillary and corrected venous PCO2; correction is venous PCO2 minus 6 torr
c
Includes arterial PO2 only
d
Includes cases of pressure control, volume control and pressure-regulated volume control only
e
Includes cases of pressure control only
f
Includes cases of volume control and pressure regulated volume control only