• Anesthesia and analgesia · Mar 2013

    Randomized Controlled Trial Comparative Study

    A randomized comparison of ropivacaine 0.1% and 0.2% for continuous interscalene block after shoulder surgery.

    • Chun Woo Yang, Sung Mee Jung, Po Soon Kang, Hee Uk Kwon, Choon Kyu Cho, Younsuk Lee, Chul Woung Kim, and Su Young Kim.
    • Department of Anesthesiology and Pain Medicine, Cheju Halla General Hospital, Doreongno 65, Jeju-si, Jeju, South Korea. everycw@daum.net
    • Anesth. Analg.. 2013 Mar 1;116(3):730-3.

    BackgroundThe optimal concentration of ropivacaine for continuous interscalene block after shoulder surgery is currently unknown.MethodsFifty-six patients received a perineural infusion of either ropivacaine 0.1% or 0.2% for 48 hours after shoulder surgery. We assessed pain scores as primary end points and supplemental analgesia, ropivacaine consumption, motor block, side effects, and patient satisfaction as secondary end points.ResultsPain scores were not statistically different during the infusion periods; however, supplemental analgesia consumption was higher in the group receiving ropivacaine 0.1% during the first 24 hours (64% vs 28%, P = 0.022). Other secondary end points were statistically inconclusive.ConclusionsThese results suggest that ropivacaine 0.2% provides more effective analgesia than ropivacaine 0.1% during the first 24 hours for continuous interscalene block after shoulder surgery.

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