Table 2.

Perioperative profiles of the patients

Variables	BRS (n = 30)	LRS (n = 30)	χ2/t	P
Surgery duration (min)	130.5 (120, 160)	128.5 (120, 170)	-0.127	0.899
Anesthesia duration (min)	157.5 (140, 180)	150 (138, 185)	-0.422	0.673
Cumulative fluid volume (ml)	1850 (1675, 2125)	1750 (1600, 1925)	-1.433	0.152
Fluid per minute of anesthesia (ml·-1·h-1)	11.21 (10.44, 13.81)	11.84 (9.42, 13.44)	-0.414	0.679
Blood loss (ml)	400 (200, 625)	400 (200, 600)	-0.106	0.916
Urine volume (ml)	225 (200, 425)	200 (138, 300)	-1.518	0.129
Hypotension (n, %)	10 (33.3)	12 (40)	0.287	0.592
Duration of hypotension (min)
MAP < 65 mmHg	0 (0, 5)	5 (0, 15)	1.002	0.149
MAP < 60 mmHg	0 (0, 0)	0 (0, 1)	0.332	0.511
MAP < 50 mmHg	0 (0, 0)	0 (0, 0)	0.134	0.317
Patients requiring vasopressors (n, %)
Ephedrine	8 (26.7)	7 (23.3)	0.089	0.766
Phenylephrine	4 (13.3)	8 (26.7)	0.938	0.333
Noradrenaline	0 (0)	1 (3.3)	0.000	1.000
Blood component transfusion
red blood cells (units)	0 (0, 0)	0 (0, 0)	-0.732	0.464
albumin (g)	0 (0, 5)	0 (0, 20)	-0.755	0.450
MAP (mmHg)
Preoperative	96.3 ± 9.7	101.0 ± 15.1	1.432	0.157
Postoperative	97.2 ± 16.2	96.2 ± 18.9	-0.227	0.821
Heart rate (beats/min)
Preoperative	73 ± 12	73 ± 14	0.150	0.881
Postoperative	68 ± 13	71 ± 16	0.664	0.509
SVV (%)
Preoperative	12.61 ± 3.10	14.03 ± 2.96	1.812	0.075
Postoperative	7.49 ± 2.74	6.92 ± 2.28	-1.019	0.317
Postoperative maintenance fluid (ml)
LRS	0 (0, 0)	0 (0, 0)	0.853	0.393
normal saline	0 (0, 100)	0 (0, 0)	0.605	0.545

Note: Values are expressed as mean ± SD, median (IQR), or number (%). BRS: sodium bicarbonated Ringer’s solution; LRS: sodium lactated Ringer’s solution; MAP: mean arterial pressure; SVV: stroke volume variation.