Table 4.
Parameter | No inhalation injury | Inhalation injury | P-value |
---|---|---|---|
Ventilator rate (breaths·min−1) | 17.0 (14.5–19.4) | 17.8 (16.2–19.4) | 0.513 |
Spontaneous rate (breaths·min−1) | 19.3 (15.4–23.2) | 15.6 (11.1–20.0) | 0.203 |
Ventilator tidal volume (ml/kg) | 8.71 (6.86–10.56) | 7.81 (6.84–8.78) | 0.304 |
Spontaneous tidal volume (ml/kg) | 9.55 (7.87–11.2) | 7.63 (6.02–9.24) | 0.085 |
Minute volume (L·min−1) | 10.5 (8.00–13.0) | 11.3 (9.17–13.5) | 0.597 |
Inspiratory pressure* (kPa) | 2.42 (1.49–3.35) | 2.90 (2.58–3.24) | 0.118 |
ASB† pressure (kPa) | 1.22 (1.06–1.36) | 1.50 (1.19–1.81) | 0.147 |
Peak airway pressure* (kPa) | 2.15 (1.84–2.46) | 2.63 (2.28–2.96) | 0.048 |
Positive end expiratory pressure (kPa) | 0.68 (0.55–0.85) | 0.76 (0.67–0.85) | 0.292 |
Inspired O2 concentration (%) | 37.9 (31.4–44.4) | 47.5 (40.2–54.9) | 0.052 |
Values are mean (95% confidence interval): P-value calculated with two-tailed t-test. *Inspiratory pressure applies during pressure controlled ventilation mode only. Peak airway pressure applies during volume controlled and spontaneous ventilation modes only. †ASB = Assisted spontaneous breathing.