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  • Title: Evaluation of the safety and efficacy of ketorolac versus morphine by patient-controlled analgesia for postoperative pain.
    Author: O'Hara DA, Fanciullo G, Hubbard L, Maneatis T, Seuffert P, Bynum L, Shefrin A.
    Journal: Pharmacotherapy; 1997; 17(5):891-9. PubMed ID: 9324179.
    Abstract:
    STUDY OBJECTIVE: To compare ketorolac tromethamine with morphine for pain management after major abdominal surgery. DESIGN: Double-blind, randomized study. SETTING: Hospital recovery room and postoperative surgical unit. PATIENTS: One hundred ninety-one patients with at least moderate pain after major abdominal surgery. INTERVENTIONS: Patients received ketorolac by patient-controlled analgesia (PCA) bolus alone (Ket B), ketorolac by bolus plus infusion (Ket I), or morphine by PCA bolus (morphine), with injectable morphine available for supplementation. MEASUREMENTS AND MAIN RESULTS: Levels of sedation, pain intensity, pain relief, and adverse events were recorded at baseline, at 2, 4, and 6 hours, and at termination. Supplemental morphine was required by 71% of Ket B patients, 67% of Ket I patients, and 38% of morphine patients (p < or = 0.001 for Ket B vs morphine). Although patients receiving ketorolac required more supplemental morphine than the morphine group (6.0 mg Ket I, 6.2 mg Ket B, 4.0 mg morphine), there was a large morphine-sparing effect in both ketorolac groups (total morphine 6.0 mg Ket I, 6.2 mg Ket B, 33.3 mg morphine). Overall pain relief scores were similar for morphine and Ket I groups, and were lower for Ket B than for morphine (p = 0.002). There were no differences among groups in numbers of patients with adverse events. CONCLUSION: Ketorolac may be effective when administered by PCA device, and has a clear morphine-sparing effect.
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