Table 4.

Intensity of PONV 72 h after surgery and chronic postoperative pain incidence

PONV	Groups			p-values
	S	R	RD
	n (%)
0	23 (100)	24 (100)	20 (95.24)	0.321	–	–	–
1	0 (0)	0 (0)	0 (0)	–	–	–	–
2	0 (0)	0 (0)	0 (0)	–	–	–	–
3	0 (0)	0 (0)	1 (4.76)	–	–	–	–
Incidence chronic pain	10 (47.6)	7 (29.2)	4 (19.0)	0.015*	p1 = 0.167	p2 = 0.050	p3 = 0.332

Notes: p¹, group R vs group S; p², group RD vs group S; p³, group RD vs group R.

^*Statistically significant differences (p < 0.05). S, saline; R, 0.5% ropivacaine; RD, 5 mg dexamethasone and 0.5% ropivacaine.

Abbreviation: PONV, postoperative nausea and vomiting.