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Table 2 Comparison of ventilation parameters in two time-separated burn intensive care unit cohorts

From: Ventilation strategies in burn intensive care: A retrospective observational study

Parameter 2005/06 cohort 2010/2011 cohort P-value
Ventilator rate (breaths·min−1) 17.2 (15.1–19.4) 17.7 (16.0–19.3) 0.747
Spontaneous rate (breaths·min−1) 17.2 (12.2–22.2) 17.0 (13.0–21.0) 0.944
Ventilator tidal volume (ml/kg) 8.32 (7.67–9.10) 7.96 (6.30–9.62) 0.624
Spontaneous tidal volume (ml/kg) 8.45 (6.69–10.2) 8.45 (6.63–10.3) 0.995
Minute volume (L·min−1) 11.9 (9.28–14.1) 10.3 (8.17–12.5) 0.373
Inspiratory pressure* (kPa) 2.78 (2.21–3.35) 2.74 (2.31–3.16) 0.884
ASB† pressure (kPa) 1.60 (1.21–1.98) 1.20 (1.08–1.31) 0.034
Peak airway pressure* (kPa) 2.52 (2.14–2.90) 2.63 (2.00–2.73) 0.518
Positive end expiratory pressure (kPa) 0.70 (0.59–0.81) 0.75 (0.65–0.86) 0.479
Inspired O2 concentration (%) 46.9 (37.4–56.2) 40.2 (35.1–45.3) 0.184
  1. 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.