Table 1.

Baseline characteristics, n = 280.

	Median	Std. deviation
Age	73	9.45
Preoperative sodium	142	5.03
Preoperative potassium	4.5	0.46
Preoperative serum creatinine	0.9	0.18
Postoperative sodium	138	5.43
Postoperative potassium	4.3	0.49
Volume of irrigant used	12	10.87
Weight of tissue resected	13	21.76
Resection time	30	17.13