Fig. 3
From: Opioid-free anesthesia in bariatric surgery: a prospective randomized controlled trial
Pain scores: visual analogue scale (VAS) during different postoperative times at rest (r), during movement (m) and during coughing (c) showing a comparable VAS score at 1 h. A statistically significant difference in VAS is shown afterwards. (OBA = Opioid-Based Anesthesia, OFA = Opioid-Free Anesthesia, p on the left is for the first postoperative hour between OFA and OBA, p on the right is for the hole 48 h between OFA and OBA)