Table 2. Renal Function Indices in Two Groups Before and After Surgery.

Variable/Time	Fluid Regimen		P Valuea
	Liberal (N = 36)	Restrictive (N = 36)
BUN
Before surgery	28.3 ± 9.8	27.6 ± 9.5	0.07
After surgery	24.8 ± 9.4	24.3 ± 6.2	0.8
P valueb	0.01	0.045
Creatinine
Before surgery	0.95 ± 0.24	0.91 ± 0.17	0. 24
After surgery	0.88 ± 0.16	0.9 ± 0.12	0.29
P value	0.001	0.88
Creatine kinase
Before surgery	185 ± 108	186 ± 107	0. 98
After surgery	165 ± 86	191 ± 114	0.47
P value	0.18	0.39
GFR
Before surgery	179 ± 64	179 ± 39	0. 54
After surgery	192 ± 63	178 ± 43	0.23
P value	0.01	0.58

^aP value: intergroup comparisons.

^bP value: intragroup comparisons before and after surgery.