Time 1

n

Time 2

n

p

Time 3

n

p

Time (min)

26 ± 5

17

43 ± 11

9

52 ± 17

4

not tested

paO2 (mmHg)

410 ± 64

15

400 ± 100

8

ns

372 ± 77

4

ns

paCO2 (mmHg)

42 ± 17

15

40 ± 11

8

ns

47.15 ± 8

4

ns

pH

7.413 ± 0.004

17

7.459 ± 0.1

9

ns

7.349 ± 0.106

4

ns

SaO2 (%)

99.8 ± 0.15

15

99.75 ± 0.2

8

ns

99.7 ± 0.025

4

ns

Base excess (mmol/l)

1.3 ± 1.5

17

1.6 ± 1.5

9

ns

1.1 ± 1.8

4

ns

Standard bicarbonate (mmol/l)

26.1 ± 1.2

13

26.3 ± 1

6

ns

25.1 ± 2.6

3

ns