Cardioprotective effects of remimazolam in elderly hypertensive patients undergoing gastrointestinal tumor surgery: A randomized controlled trial

Table 6 Comparison of intraoperative parameters between the two groups, mean ± SD

Item	P group (n = 40)	R group (n = 40)	t value	P value
Operative time (minute)	176.25 ± 55.42	163.38 ± 57.07	1.024	0.309
Intraoperative fluid volume (mL)	1530.00 ± 316.19	1462.50 ± 327.92	0.937	0.352
Colloid volume (mL)	153.75 ± 230.77	287.50 ± 250.32	-2.485	0.015
Crystalloid volume (mL)	1376.25 ± 301.70	1175.00 ± 401.12	2.536	0.013
Intraoperative blood loss (mL)	56.00 ± 50.32	49.75 ± 25.77	0.699	0.487
Intraoperative transfusion (mL)	7.50 ± 47.43	15.00 ± 66.22	-0.582	0.562
Urine output (mL)	335.25 ± 146.71	316.25 ± 129.29	0.615	0.541
Norepinephrine consumption (μg)	354.00 ± 509.58	37.70 ± 80.77	3.877	< 0.001
Extubation time (minute)	16.35 ± 11.34	14.08 ± 7.56	1.056	0.294
PACU stay (minute)	45.00 ± 11.82	44.75 ± 11.09	0.098	0.923
Postoperative hospital stay (day)	12.53 ± 3.00	11.55 ± 2.02	1.702	0.093

PACU: Post-anesthesia care unit; P group: Control group (propofol-based intravenous general anesthesia); R group: Experimental group (remimazolam-based intravenous general anesthesia).