Oxycodone vs. tramadol in postoperative parent-controlled intravenous analgesia in children: a prospective, randomized, double-blinded, multiple-center clinical trial

Table 4 Comparison of adverse events between oxycodone and tramadol-PCIA in wards

Side effects	Time points	Oxycodone (N = 89)	Tramadol (N = 109)	P
nausea [n (%)]	3 h after surgery	5 (5.6)	3 (2.8)	0.471
	24 h after surgery	5 (5.6)	7 (6.4)	0.814
	48 h after surgery	5 (5.6)	8 (7.3)	0.627
vomiting [n (%)]	3 h after surgery	3 (3.4)	2 (1.8)	0.659
	24 h after surgery	3 (3.4)	7 (6.4)	0.330
	48 h after surgery	2 (2.2)	6 (5.5)	0.299
Pruritus [n (%)]	3 h after surgery	1 (1.1)	1 (0.9)	1.000
	24 h after surgery	2 (2.2)	1 (0.9)	0.589
	48 h after surgery	1 (1.1)	0	0.449
over sedation (Ramsay ≥ 5)	3 h after surgery	0	0	--
	24 h after surgery	0	0	--
	48 h after surgery	0	0	--
hypoxemia	3 h after surgery	0	0	--
	24 h after surgery	0	0	--
	48 h after surgery	0	0	--

ISSN: 1471-2253