Table 4.

Intraoperative blood gas data

	Group-CFM	Group-GDFM	p
pH
0 h	7.43 ± 0.04	7.42 ± 0.04	0.562
1 h	7.38 ± 0.05	7.38 ± 0.04	1.000
2 h	7.36 ± 0.03	7.36 ± 0.04	0.681
p	< 0.001**	< 0.001**
PaO2 (mmHg)
0 h	177.28 ± 70.80	171.32 ± 58.55	0.703
1 h	116.02 ± 32.92	126.30 ± 32.25	0.191
2 h	123.00 (107.00–147.50)	129.00 (110.50–161.00)	0.383
p	< 0.001**	0.001**
PaCO2 (mmHg)
0 h	33.99 ± 3.30	32.42 ± 3.33	0.053
1 h	34.97 ± 3.68	34.08 ± 3.36	0.562
2 h	34.50 (32.80–37.15)	35.90 (32.75–38.07)	0.405
p	0.786	0.011**
Bicarbonate (mmol/l)
0 h	23.96 ± 2.23	23.00 ± 2.34	0.084
1 h	22.05 ± 2.13	21.50 ± 2.19	0.287
2 h	20.83 ± 2.04	20.76 ± 2.28	0.891
p	< 0.001**	< 0.001**
Hemoglobin (g/dl)
0 h	12.00 (10.70–13.20)	11.40 (10.40–12.10)	0.211
1 h	11.90 (10.30–13.40)	11.50 (10.60–13.10)	0.892
2 h	11.88 ± 1.47	11.87 ± 1.78	0.981
p	0.200	0.359
Lactate (mmol/l)
0 h	0.70 (0.60–0.90)	0.70 (0.60–1.00)	0.270
1 h	0.80 (0.70–0.90)	0.90 (0.70–1.10)	0.040*
2 h	0.90 (0.70–1.00)	1.00 (0.80–1.20)	0.061
p	0.002**	< 0.001**

Data are presented as mean ± SD or median (25–75 percentile) P < 0.05 for all the data (Mann–Whitney U test, Repeated Measures ANOVA test and Wilcoxon Signed Rank Test and Friedman two-way ANOVA)

0 h the end of induction, 1 h induction after 1 h, 2 h induction after 2 h

*Statistical significance in cross-group comparisons

**Statistical significance when compared to 0 h values at the end of 2nd hour