• G S De Oliveira, S Ahmad, P C Fitzgerald, R J Marcus, C S Altman, A S Panjwani, and R J McCarthy.
• Department of Anesthesiology, Northwestern University Feinberg School of Medicine, 251 E. Huron St., Feinberg 5-704, Chicago, IL 60611, USA. r-mccarthy@northwestern.edu
• Br J Anaesth. 2011 Sep 1; 107 (3): 362-71.

BackgroundGlucocorticoids are commonly administered before ambulatory surgery, although their effects on quality of recovery are not well characterized. The purpose of this study was to evaluate the dose-dependent effects of dexamethasone on patient recovery using the Quality of Recovery 40 questionnaire (QoR-40) after ambulatory surgery.MethodsThis prospective, double-blind trial studied 106 female subjects undergoing outpatient gynaecological laparoscopy. Subjects were randomized to receive saline, dexamethasone 0.05 mg kg(-1) or dexamethasone 0.1 mg kg(-1) before induction. The primary outcome was global QoR-40 at 24 h. Postoperative pain, analgesic consumption, side-effects, and discharge time were also evaluated.ResultsGlobal median (IQR) QoR-40 after dexamethasone 0.1 mg kg(-1) 193 (192-195) was greater than dexamethasone 0.05 mg kg(-1) 179 (175-185) (P=0.004) or saline, 171 (160-182) (P<0.005). Median (IQR) morphine equivalents administered before discharge were 2.7 (0-6.3) mg after dexamethasone 0.1 mg kg(-1) compared with 5.3 (2.4-8.8) mg and 5.3 (2.7-7.8) mg after dexamethasone 0.05 mg kg(-1) and saline (P=0.02). Time to meet discharge criteria was 30 min shorter after dexamethasone 0.1 mg kg(-1) compared with saline (P=0.005). At 24 h, subjects receiving dexamethasone 0.1 mg kg(-1) had consumed less opioid analgesics, reported less sore throat, muscle pain, confusion, difficulty in falling asleep, and nausea compared with dexamethasone 0.05 mg kg(-1) and saline.ConclusionsDexamethasone demonstrated dose-dependent effects on quality of recovery. Dexamethasone 0.1 mg kg(-1) reduced opioid consumption compared with dexamethasone 0.05 mg kg(-1), which may be beneficial for improving recovery after ambulatory gynaecological surgery.

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