Fig. 3From: Oxycodone vs. tramadol in postoperative parent-controlled intravenous analgesia in children: a prospective, randomized, double-blinded, multiple-center clinical trialComparison of Ramsay sedation scores between oxycodone and tramadol group. Patient′s sedation level in the PACU (10, 20 and 30 min after extubation) and in the wards (3 h, 24 and 48 h after surgery) was assessed by Ramsay sedation scores. ** P ≤ 0.01. oxy: oxycodone group; tra: tramadol groupBack to article page