Table 1.

Description of studies and participants.

Reference	Country	Year	Number of patients			Dosage of MgSO4 in IG	Composition of peripheral anesthetic solution cocktail in CG
			IG	CG	Total
Zhao et al. (11)	China	2021	30	30	60	250 mg	20 mL levobupivacaine 50 mg + triamcinolone 25 mg + 0.9% normal saline
Zoratto et al. (15)	Canada	2021	41	39	80	2 g of 10% MgSO4	10 mL ropivacaine 0.5% + 10 mL normal saline
Choi et al. (12)	America	2022	49	53	102	150 mg (0.3 mL)	30 mL 0.25% bupivacaine and 0.3 mL sterile saline
Wang et al. (13)	China	2023	50	50	100	2.5 mg/mL	100 mL ropivacaine (0.2%), epinephrine (2.0 mg/mL), and dexamethasone (0.1 mg/mL)
Zhao et al. (14)	China	2023	45	45	90	2.5 mg/mL	100 mL 0.2% ropivacaine, dexamethasone (0.1 mg/mL), and epinephrine (2.0 μg/mL)

CG, control group; IG, intervention group; MgSO4, magnesium sulfate.