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Perineural dexamethasone reduces rebound pain after ropivacaine single injection interscalene block for arthroscopic shoulder surgery: a randomized controlled trial
- Perineural dexamethasone reduces rebound pain after ropivacaine single injection interscalene block for arthroscopic shoulder surgery: a randomized controlled trial
- Woo, Jae Hee; Lee, Hyun Jung; Oh, Hye-Won; Lee, Jong Wha; Baik, Hee Jung; Kim, Youn Jin
- Ewha Authors
- 백희정; 김윤진; 우재희; 이종화; 오혜원; 이현정
- SCOPUS Author ID
- 백희정; 김윤진; 우재희; 오혜원; 이현정
- Issue Date
- Journal Title
- REGIONAL ANESTHESIA AND PAIN MEDICINE
- REGIONAL ANESTHESIA AND PAIN MEDICINE vol. 46, no. 11, pp. 965 - 970
- BMJ PUBLISHING GROUP
- SCIE; SCOPUS
- Document Type
- Background and objectives A single injection interscalene block (ISB) is a common regional analgesic technique in patients undergoing arthroscopic shoulder surgery. However, rebound pain after ISB resolution may reduce its overall benefit. Our primary aim was to assess whether perineural dexamethasone reduces the intensity and incidence of rebound pain in patients undergoing arthroscopic shoulder surgery under general anesthesia combined with a preoperative single injection ISB. Methods The patients were randomly assigned to receive single injection ISB using either 0.5% ropivacaine (control) or 0.5% ropivacaine containing 5 mg of dexamethasone. The primary outcomes were the pain score difference before and after ISB resolution, and the incidence of rebound pain. The secondary outcomes were the onset and duration of rebound pain, the presence of sleep disturbances due to postoperative pain, the first time when an analgesic was requested, and pain scores at various predefined time points. Results Pain increase following ISB resolution was lower in the dexamethasone group compared with the control group (4.5 +/- 2.4 and 6.9 +/- 2.2, respectively, p<0.001). The incidence of rebound pain was significantly lower in the dexamethasone group compared with the control group (37.1% and 82.9%, respectively, p<0.001). The controls experienced greater sleep disturbance during the postoperative period compared with those who received ISB with perineural dexamethasone. Conclusions Perineural dexamethasone added to ISB using ropivacaine led to a much smoother resolution of ISB, reflected in a significantly smaller increase in pain after block resolution, a lower incidence of rebound pain and a lower sleep disturbance during the first postoperative week.
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