Table 3: Perioperative blood gas results.*

 

Group 1 (n = 30)

Group 2 (n = 30)

p value

pH

 

 

 

0.hr

7.38 ± 0.04

7.38 ± 0.03

0.645

1.hr

7.39 ± 0.04

7.42 ± 0.05

0.041

2.hr

7.37 ± 0.04

7.39 ± 0.04

0.110

3.hr¥

7.34 ± 0.06

7.39 ± 0.05

0.160

PCO2

 

 

 

0.hr

42.7 ± 5.6

43.1 ± 4.3

0.451

1.hr

40.4 ± 5.0

37.9 ± 5.2

0.051#

2.hr

40.4 ± 5.7

36.1 ± 4.2

0.006

3.hr¥

39.4 ± 7.5

37.0 ± 4.7

0.643

PaO2

 

 

 

0.hr

182.0 ± 61.0

151.4 ± 61.1

0.068#

1.hr

131.1 ± 41.0

119.8 ± 45.0

0.217

2.hr

143.4 ± 40.8

128.6 ± 47.9

0.184

3.hr¥

181.4 ± 38.3

173.6 ± 47.0

0.428

HCO3

 

 

 

0.hr

24.8 ± 1.4

25.1 ± 1.9

0.917

1.hr

23.9 ± 1.4

24.6 ± 2.1

0.242

2.hr

22.7 ± 1.7

22.7 ± 1.9

0.859

3.hr¥

20.8 ± 1.5

22.2 ± 1.5

0.041

Lactate

 

 

 

0.hr

1.22 ± 0.51

1.45 ± 0.57

0.056#

1.hr

1.22 ± 0.51

1.45 ± 0.56

0.032

2.hr

1.25 ± 0.45

1.58 ± 0.61

0.080#

3.hr¥

1.77 ± 0.94

1.88 ± 0.73

0.643

CoHb

 

 

 

0.hr

1.20 ± 0.38

1.33 ± 0.66

0.656

1.hr

1.31 ± 0.54

1.33 ± 0.66

0.246

2.hr

1.08 ± 0.24

1.61 ± 0.66

0.001

3.hr¥

1.16 ± 0.53

1.71 ± 0.80

0.032

 

 

 

 

*Fourth hour blood gas was not evaluated because there were only ten patients. ┬ąthird hour assessments were made on 26 patients (10 patients in Group 1, 16 patients in Group 2).

The values indicated with Bold are statistically significant differences. #Although there is no statistically significant difference, there was a slope towards significance (trend toward)