Time (hours)

Pre-cannulation

Post-cannulation

0

6

12

24

48

pH

7.47

7.22

7.38

7.61

7.49

7.48

PaO₂ (mmHg)

31

149

54

47

42

58

CO₂ (mmHg)

87

58

35

37

51

49

HCO₃ (mmol/L)

35.5

29

23

34

34

33

Lactate (mmol/L)

5.6

13.2

3.2

2

1.6

2

Oxygensaturation (%)

38

98

78

82

71

80