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Table 1 Respiratory variables used to calculate driving power, dynamic power, and total power at each PEEP level, at the end of the experiment

From: Elastic power but not driving power is the key promoter of ventilator-induced lung injury in experimental acute respiratory distress syndrome

Variables

PEEP (cmH2O)

3

5.5

7.5

9.5

11

VT(ml)

2.2 ± 0.2

2.2 ± 0.0

2.1 ± 0.1

2.0 ± 0.1

2.2 ± 0.3

RR (bpm)

75 ± 8

74 ± 2

75 ± 5

81 ± 4

75 ± 9

Ppeak (cmH2O)

12.2 ± 1.8

15.1 ± 0.7

17.4 ± 1.2*

22.3 ± 2.4*#&

30.1 ± 4.3*#&**

Pplat (cmH2O)

9.7 ± 1.4

12.9 ± 0.6*

15.1 ± 0.8*#

18.3 ± 2.5*#&

24.2 ± 3.1*#&**

ΔP (cmH2O)

8.4 ± 1.4

8.8 ± 0.6

9.5 ± 0.4

10.5 ± 2.3

14.7 ± 2.9*#&**

  1. Values are means + SD of 6 animals/group
  2. One-way ANOVA followed by the Bonferroni post hoc test was performed
  3. VT tidal volume, RR respiratory rate, Ppeak respiratory system peak pressure, Pplat respiratory system end-inspiratory (plateau) pressure, ΔP driving pressure, PEEP positive end-expiratory pressure
  4. *Significantly different from PEEP 3 (p < 0.05)
  5. #Significantly different from PEEP 5.5 (p < 0.05)
  6. &Significantly different from PEEP 7.5 (p < 0.05)
  7. **Significantly different from PEEP 9.5 (p < 0.05)