• Pain Med · Mar 2003

    Multicenter Study Clinical Trial

    Conversion to oral controlled-release oxycodone from intravenous opioid analgesic in the postoperative setting.

    • Brian Ginsberg, Raymond S Sinatra, Lauri J Adler, James C Crews, Allen H Hord, Charles E Laurito, and Michael A Ashburn.
    • Department of Anesthesiology, Duke University Medical Center, Durham, North Carolina 27710, USA. ginsb001@mc.duke.edu
    • Pain Med. 2003 Mar 1;4(1):31-8.

    ObjectiveThis study assessed conversion factors utilized by physicians to transfer postoperative patients from intravenous opioids to oral controlled-release (CR) oxycodone and the subsequent analgesic effectiveness.DesignThis was a multicenter, open-label, usual-use study of 189 hospitalized postoperative patients receiving opioid (usually morphine) intravenous patient-controlled analgesia (IV PCA) for at least 12 to 24 hours post-procedure. Patients who were tolerant of oral medications and without signs of paralytic ileus were converted to oral CR oxycodone, given every 12 hours for up to 7 days.ResultsThe mean (+/-SE) conversion factor used to convert IV PCA morphine to CR oxycodone was 1.2 +/- 0.1 (N=159). The initial CR oxycodone doses, based on individual conversion factors from IV PCA morphine, produced significant reductions in pain intensity (scores ConclusionsAdministered at least 12 hours following abdominal, orthopedic, or gynecologic surgery, an initial oral CR oxycodone dose calculated by multiplying the amount of IV morphine used in the previous 24 hours (immediate postoperative period) by a conversion factor of 1.2, on average, provided adequate pain control during the subsequent 12-hour dosing interval and for a maximum of 7 days. Adverse events were consistent with opioid side effects.

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