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  • Title: Intravenous ketorolac tromethamine versus morphine sulfate in the treatment of immediate postoperative pain.
    Author: Peirce RJ, Fragen RJ, Pemberton DM.
    Journal: Pharmacotherapy; 1990; 10(6 ( Pt 2)):111S-115S. PubMed ID: 2082306.
    Abstract:
    Intravenous ketorolac tromethamine was compared with morphine sulfate for the relief of moderate to severe postoperative pain and for side effects in 125 women undergoing major abdominal gynecologic surgery. Patients were randomly assigned to receive an initial intravenous dose of ketorolac 10 mg, ketorolac 30 mg, morphine 2 mg, or morphine 4 mg, administered in a double-blind fashion. No other narcotics were administered in the 3 hours preceding the first dose of study drug. A second dose was administered on request, but no sooner than 15 minutes after the initial dose. Patients who required additional analgesia within the 6-hour observation period were remedicated with a backup analgesic and withdrawn from the study. Pain scores and side effect evaluations were performed at baseline, 30 minutes, 1 hour, and then hourly for up to 6 hours or until the subject terminated the study. No significant differences among the treatments were noted in terms of area under the time-effect curves for pain intensity differences or pain relief. In each treatment group, 70-80% of patients withdrew within 1 hour and approximately 90% within 3 hours of the initial drug dose because of inadequate analgesia. With the dosage regimens used, neither drug adequately controlled moderate to severe pain in the immediate postoperative period. Patients receiving ketorolac experienced significantly less drowsiness than those given morphine, and some subjects in each experienced nausea. No serious adverse effects were reported.
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