Effect of Low-Dose (Single-Dose) Magnesium Sulfate on Postoperative Analgesia in Hysterectomy Patients Receiving Balanced General Anesthesia

Table 2

The comparison of NRS mean in different time between two groups and mean postoperative analgesic consumption in two groups over 24 hours.

Variables	Magnesium sulfate^*	Normal saline^*	Mean difference^**	P value
	( = 20)	( = 20)	(95% CI)
Pain severity based on (NRS)
Emergence time	4.30 ± 2.54	3.70 ± 0.73	0.60 (−0.59, 1.80)	0.102
6 h	6.45 ± 1.05	9.80 ± 0.62	−3.35 (−3.90, −2.80)	0.0001
12 h	5.90 ± 0.79	7.80 ± 1.11	−1.90 (−2.51, −1.29)	0.0001
24 h	4.60 ± 0.94	5.90 ± 0.45	−1.30 (−1.78, −0.82)	0.0001
Pethidine consumption (mg)	16.75 ± 18.23	68.0 ± 17.42	−51.25 (−62.67, −39.83)	0.0001

Data are mean ± SD.
Difference between magnesium sulfate NRS mean and saline NRS mean and 95% confidence interval of calculated mean difference.