Table 1. Patient's laboratory parameters .

Timing		Comple blood count			Electrolytes				Urine osmolality (300-900 mOsm/kg)	Serum osmolality (275-295 mOsm/kg)	Serum ammonia (11-51 umol/l)
		Hemoglobin (13-17 g/dL)	Platelet (150-410 x 103/uL)	WBC (4.0-10.0 x 103/uL)	Na (136-145 mmol/L)	K (3.5-5.1 mmol/L)	Cl (98-107 mmol/L)	Bicarb (21-31 mmol/L)
												Preop		11.6	184	22.5	138	3.9	102	27	N/A	N/A	N/A
Postop	Hour 0	12.1	259	25.6	122.2	4.2	87	13.1	50.3	262.1	132
												Hour 8	N/A	N/A	N/A	137.4	3.6	107	23	286.6	N/A	N/A
	Hour 16	10.5	156	15.6	138.5	3.4	108	20.2	N/A	N/A	36
												Hour 40	9.8	144	11.9	134.7	3.5	105	22.6	N/A	N/A	N/A