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  • Title: A dose-ranging study of intraarticular midazolam for pain relief after knee arthroscopy.
    Author: Batra YK, Mahajan R, Kumar S, Rajeev S, Singh Dhillon M.
    Journal: Anesth Analg; 2008 Aug; 107(2):669-72. PubMed ID: 18633051.
    Abstract:
    BACKGROUND: A variety of analgesic techniques have been used to manage postoperative pain after arthroscopic knee surgery. Intraarticular midazolam may have an analgesic effect similar to that seen when midazolam is used in a centroneuraxial fashion. METHODS: Sixty ASA status I or II patients undergoing knee arthroscopy with general anesthesia were randomized to receive intraarticular midazolam 50 mug/kg, 75 mug/kg, or isotonic saline. We assessed the efficacy of the analgesic technique with visual analog scale pain scores, time until first request for analgesics, and cumulative analgesic consumption. Patients were observed for 48 h. RESULTS: The addition of intraarticular midazolam significantly reduced visual analog pain scores in the early postoperative period compared with saline. Both doses similarly prolonged duration until first request for analgesic compared with saline (4.7 and 4.6 vs 0.7 h). There was no statistically significant difference between the two doses of midazolam or cumulative 48 h analgesic consumption. CONCLUSIONS: We conclude that when intraarticular midazolam was compared with placebo there was a reduction in pain after day-case arthroscopic knee surgery; however, this pain relief was of relatively short duration.
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