Table 1
Laboratory data before, during and after the surgery

Variable	Preoperative	1 hr	3.5 hr	4 hr	4.5 hr	5.5 hr	6.5 hr	Postoperative
Hemoglobin (g/dL)	15.1	11.2	12.9	12.9	12.2	12.6	11.9	12.2
Hematocrit (%)	44.5	33	38	38	36	37	34.5	36
Sodium (mEq/L)	138	139	146	144	143	145	-	143
Potassium (mEq/L)	4.6	3.8	3.8	3.7	3.9	3.4	-	3.9
Ionized calcium (mEq/dL)	-	4.29	4.25	4.21	4.17	4.13	-	-
Glucose (mg/dL)	133	136	147	148	145	137	-	134
Serum Osmol (mOsm/kg)	-	-	-	-	-	-	299	-
Urine Osmol (mOsm/kg)	-	-	-	-	-	-	362	-