Table 2.

VBG analysis and SOD (mean ± SD).

Variable	SCH group	Control group	t	P	Cohen d
	n = 40	n = 40
Venous pH	7.375 ± 0.032	7.284 ± 0.051	9.493	<0.001*	2.138
PvO2 (mm Hg)	74.08 ± 43.42	30.00 ± 10.72	6.233	<0.001*	1.394
PvCO2 (mm Hg)	45.73 ± 6.53	58.33 ± 11.02	−6.219	<0.001*	−1.391
Lactic acid (mmol/L)	2.17 ± 1.09	3.55 ± 1.27	−5.214	<0.001*	−1.207
K+ (mmol/L)	3.67 ± 0.35	3.54 ± 0.25	1.839	0.070	0.427
FBG (mmol/L)	5.11 ± 0.88	4.05± 0.93	5.244	<0.001*	1.171
SOD (U/ml)	157.23 ± 31.95	196.38 ± 14.85	−7.027	<0.001*	−1.572

Independent-samples t-test.

^*p < 0.01.