Table 1 Respiratory parameters

V_T (ml)

Baseline-PEEP

1.9 ± 0.3

1.9 ± 0.3

2.0 ± 0.2

2.1 ± 0.3

1.9 ± 0.2

2.0 ± 0.2

2.0 ± 0.2

2.1 ± 0.3

End

2.0 ± 0.3

2.1 ± 0.2

2.0 ± 0.3

2.1 ± 0.4

2.0 ± 0.2

1.9 ± 0.2

2.0 ± 0.2

2.2 ± 0.3

RR (bpm)

Baseline-PEEP

76.3 ± 4.5

76.4 ± 3.7

65.9 ± 10.3

57.6 ± 11.1^**

75.8 ± 3.4

78.1 ± 2.3

60.8 ± 18.1

59.8 ± 17.2^**

End

77.3 ± 3.8

76.5 ± 3.7

63.6 ± 8.8

46.3 ± 11.5^**#

74.1 ± 4.3

78.1 ± 2.3

67.2 ± 14.9

47.3 ± 18.2^**,#

Ppeak,L (cmH₂0)

Baseline-PEEP

13.2 ± 2.1

12.1 ± 0.7

17.1 ± 2.4

16.5 ± 6.5^**

10.7 ± 1.7

12.6 ± 0.7

16.0 ± 1.2^*

14.4 ± 3.8

End

13.2 ± 2.3

9.2 ± 0.7^*,†

14.8 ± 2.8

11.0 ± 1.0^#†

12.3 ± 2.7

10.0 ± 1.5^†

14.8 ± 1.6

12.4 ± 3.3^†

Pmean,L (cmH₂0)

Baseline-PEEP

8.1 ± 0.9

7.7 ± 0.5

7.8 ± 0.7

7.9 ± 0.8

7.2 ± 0.7

7.9 ± 0.3

7.1 ± 0.8

7.4 ± 1.3

End

8.2 ± 1.0

6.6 ± 0.3^*,†

7.4 ± 0.7

6.2 ± 0.3^#†

7.6 ± 1.1

6.7 ± 0.4^†

7.2 ± 0.4

6.5 ± 0.9

P_0.1

Baseline-PEEP

-

-

4.2 ± 2.7

4.6 ± 2.1

-

-

4.2 ± 1.1

2.2 ± 0.4

End

-

-

2.9 ± 2.2^†

1.3 ± 0.9^†

-

-

3.9 ± 0.2

1.3 ± 0.5^†#