Table 2.

Clinical characteristics of patients among two groups during perioperative period

	Group N (n = 196)	Group P (n = 205)	P-value
Intraoperative mean arterial blood pressure (mmHg, $\overline{x}$ ± s)	86.34 ± 9.01	87.51 ± 8.95	0.192
Intraoperative mean heart rate (time/min, $\overline{x}$ ± s)	65.06 ± 6.45	65.00 ± 5.99	0.934
Intraoperative mean blood oxygen saturation (%, $\overline{x}$ ± s)	99.79 ± 0.68	99.80 ± 0.61	0.828
Intraoperative mean temperature (℃, $\overline{x}$ ± s)	36.28 ± 0.39	36.30 ± 0.38	0.477
Infusion volume (ml, $\overline{x}$ ± s)	1789.03 ± 756.32	1760.37 ± 811.86	0.417
Bleeding volume (ml, $\overline{x}$ ± s)	103.70 ± 97.37	100.24 ± 92.18	0.715
Urine volume (ml, $\overline{x}$ ± s)	421.33 ± 345.81	390.24 ± 312.41	0.207
Operation time (min, $\overline{x}$ ± s)	184.97 ± 82.01	187.34 ± 91.67	0.786
Anesthesia time (min, $\overline{x}$ ± s)	238.95 ± 93.70	240.76 ± 106.10	0.857
TOF ratio > 0.9 before extubation n, (%)	196(100%)	205(100%)	1.000