Table 1 Summary of ventilator settings, blood gas analysis and vital signs

 Tidal volume (ml/kg)

N/A

5

10

 PEEP (cm H₂O)

N/A

10

2

 Arterial pH

7.37 ± 0.06

7.42 ± 0.04

7.47 ± 0.03

 PaCO₂ (mmHg)

32 ± 3

39 ± 12

27 ± 6

 PaO₂ (mmHg)

95 ± 8

98 ± 5

113 ± 20

 HCO₃⁻ (mmol/L)

26.9 ± 4.3

24.7 ± 6.3

19.5 ± 4.2

 Lactate (mmol/L)

1.13 ± 0.49

1.70 ± 1.40

1.73 ± 0.32

 MAP (mmHg)

90 ± 15

84 ± 17

86 ± 11

 Heart rate (beats/min)

392 ± 28

394 ± 23

397 ± 34

 Rectal temperature (°C)

37.0 ± 0.1

37.1 ± 0.1

37.1 ± 0.2