Effects of anesthetic depth on perioperative T lymphocyte subsets in patients undergoing laparoscopic colorectal cancer surgery: a prospective, parallel-controlled randomized trial

Table 4 Postoperative characteristics

	BIS 35 (n = 30)	BIS 55 (n = 30)	P Value
Awareness	0	0	-
Emergence time (min)	12 (10 to 16)	13 (10 to 20)	0.824
POD1 NRS score	2 (1 to 3)	4 (2 to 4)	0.001
Analgesic pump drug residual volume (ml)			0.071
	50.5 (48.1 to 52.0)	49.5 (46.0 to 52.0)
Total sufentanil (µg)	167.9 ± 22.6	173.3 ± 25.8	0.527
Surgical site infection	9 (20.0)	7 (23.3)	0.559
Fever	8 (26.7)	11 (36.7)	0.405

Data are summarised by number (%), median (interquartile range) or mean (standard deviation). POD1 NRS score, the numerical rating scale score at 1 day postoperatively. Analgesic pump drug residual volume, the analgesic pump drug residual volume at 24 h postoperatively. P < 0.05 was considered statistically different

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