Effect of magnesium sulfate perioperative infusion on postoperative catheter-related bladder discomfort in male patients undergoing laparoscopic radical resection of gastrointestinal cancer: a prospective, randomized and controlled study

Table 4 NRS score within 48 h and analgesia requirement within 24 h after surgery

Postoperative group	Control group (n = 43)	Magnesium group (n = 45)	P-value
0 h	2 (1–2)	1 (0–2)	0.013
1 h	3 (2–3)	2 (1–3)	0.032
2 h	2 (2–3)	2 (1–2)	0.008
6 h	2 (2–2)	2 (1–2)	0.007
12 h	2 (1–2)	1 (1–2)	0.079
24 h	1 (1–2)	1 (1–2)	0.374
48 h	1 (1–1)	1 (1–1)	0.584
Cumulative use of sufentanil at 24 h (μg)	54 (52–56)	50 (50–52)	< 0.001
Rescue analgesia	9 (20.9)	4 (8.9)	0.134

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