Observation of the effects of three methods for reducing perineal swelling in children with developmental hip dislocation

Table 1 Comparison of general data of four groups of children

	Magnesium sulfate wet pack group	Iodophor wet compress group	Ice pack group	Control group	P value
Age (mo)	32.40 ± 8.89a	31.03 ± 8.72a	30.03 ± 9.08a	31.33 ± 9.13	0.759
Height (cm)	95.90 ± 7.02a	95.40 ± 6.03a	94.20 ± 5.40a	94.83 ± 6.77	0.941
Weight (kg)	14.50 ± 1.66a	14.25 ± 1.53a	13.91 ± 1.40a	14.15 ± 1.60	0.781
Operation duration (h)	3.53 ± 0.39a	3.55 ± 0.38a	3.38 ± 0.36a	3.46 ± 0.4 1	0.599
Intraoperativbleeding (mL)	90.20 ± 4.99a	86.63 ± 6.37a	88.33 ± 4.18a	89.70 ± 6.11	0.211
Temperature (°C)	2.03 ± 0.61a	2.07 ± 0.69a	1.80 ± 0.61a	3.53 ± 0.57	0.132

^aP < 0.05 vs controls. Body temperature in the table (0: < 37.5°C; 1: 37.5-38°C; 2: 38.1-38.5°C; 3: 38.5-39°C; 4: > 39°C).

Table 2 Time to regression of perineum swelling and the pain score in the four groups

	Magnesium sulfate wet pack group	Iodophor wet compress group	Ice pack group	Control group	P value
Swelling to subside (d)	2.98 ± 0.33a	3.90 ± 0.33a	3.11 ± 0.41a	5.91 ± 0.63	0.001
Pain score	4.07 ± 0.98a	4.00 ± 1.05a	3.93 ± 0.11a	6.53 ± 1.28	0.025

^aP < 0.05 vs controls.

Table 3 Comparison of the incidence of perineum blisters in the four groups

	Total number of cases	Number of cases of blistering	Percentage	P value
Magnesium sulfate wet pack group	30	0	0%	0.021
Iodophor wet compress group	30	0	0%
Ice pack group	30	0	0%
Control group	30	5	16.67%