NCT02506660.

Trial name or title	Interscalene block with low‐dose IV vs. perineural dexamethasone for shoulder arthroscopy
Methods	RCT
Participants	In the United States of America (New York, New York), participants aged 18‐70 years undergoing arthroscopic shoulder surgery with ultrasound‐guided interscalene block.
Interventions	Active comparator: bupivacaine 0.5% 15 cc perineurally + dexamethasone 1 mg intravenously. Experinmental: bupivacaine 0.5% 15 cc perineurally + dexamethasone 1 mg perineurally.
Outcomes	Duration of sensory block. Pain scores for duration of stay in recovery room after surgery, postoperative day 2 and postoperative day 3. Opioid consumption on postoperative day 2 and 3. Adverse events. Opioid‐related symptom distress scale. Satisfaction with block.
Starting date	August 2015.
Contact information	Jennifer Cheng, Hosptial for Special Surgery, New York.
Notes	This study is currently recruiting participants.

ASA = Amercian Society of Anesthesiologists; IV = intravenous; kg = kilograms; mg = milligrams; ml = millilitres; NRS = Numeric Rating Score; PACU = postanaesthesia care unit; RCT = randomized controlled trial; VAS = Visual Analogue Scale; VRS = Verbal Rating Scale.