“…All the patients were given Patient controlled analgesia (PCA) with 4 mg/ml concentration, 10 mg/h infusion, 20 mg bolus, 15 min lock-out time. Total opioid consumption was calculated by multiplying the number of boluses with the amount of opioid in each bolus in milligrams at the end of 24 h. Following extubation, patients were transferred to the recovery room and mean arterial pressure, VAS score, PCA demand and delivery values, side effects (hypotension, bradycardia, nausea, vomiting, pruritus) and additional analgesic consumption were recorded at 20, 40, 60 min and 2nd, 4th, 6th, 12th and 24th hours by an anaesthesiologist who was blinded to the groups, parallel to previous studies [4][5][6][7]. The patients were asked to rate their satisfaction according to Likert scale (1: Completely comfortable, 2: Very comfortable, 3: Slight discomfort, 4: Painful, 5: Very painful) at the end of 24 h. The patients were also evaluated for a burning sensation and bleeding in the nose.…”