Table 1 Summary of the respiratory data during VCV1, FLEX and VCV2

 Compliance (ml·cm H₂O^− 1)

53 ± 6

51 ± 5

52 ± 5

 Flow_{Peak exp} (ml s^− 1)

− 669 ± 70

− 261 ± 12^*

− 679 ± 64^*

 PEEP (cm H₂O)

8

8

8

 P_plat (cm H₂O)

16 ± 1

17 ± 1

16 ± 1

 P_mean (cm H₂O)

12.3 ± 0.5

13.7 ± 0.5^*

12.4 ± 0.4

 V_T (ml)

419 ± 0.1

418 ± 0.2

418 ± 0.1

 Zero flow time (s)

1.3 ± 0.1

0.5 ± 0.1^*

1.3 ± 0.1

 Compliance (ml·cm H₂O⁻¹)

17 ± 3

16 ± 3

17 ± 3

 Flow_{Peak exp} (ml s^− 1)

− 970 ± 162

− 303 ± 11^*

− 968 ± 161

 PEEP (cm H₂O)

12 ± 2

12 ± 2

12 ± 2

 P_plat (cm H₂O)

37 ± 3

39 ± 2

36 ± 3

 P_mean (cm H₂O)

24.6 ± 1.6

28 ± 3^ǂ

24.2 ± 1.7

 V_T (ml)

418 ± 0.2

418 ± 0.3

418 ± 0.2

 Zero flow time (s)

1.4 ± 0.3

0.7 ± 0.1^*

1.4 ± 0.3