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OBSTETRIC ANESTHESIA

The Effect of Intravenous Ketorolac on Opioid Requirement and Pain After Cesarean Delivery

Department of Anaesthesia and Women and Infants Research Foundation, King Edward Memorial Hospital for Women, Subiaco 6008, Western Australia, Australia

Address correspondence and reprint requests to Dr. T. Pavy, Head, Department of Anaesthesia, King Edward Memorial Hospital for Women, 374 Bagot Rd, Subiaco 6008, Western Australia, Australia.

Nonsteroidal antiinflammatory drugs, including ketorolac, are widely used for postoperative analgesia. This randomized, double-blinded trial compared IV ketorolac or saline combined with meperidine patient-controlled epidural analgesia (PCEA) after cesarean delivery.

Fifty healthy parturients scheduled for elective cesarean delivery under combined spinal-epidural anesthesia received PCEA plus either IV ketorolac (Group K) or saline (Group C) for 24 h. The ketorolac dose was modified, after six patients had been studied, based on new product information recommending a maximum of 120 mg ketorolac over 24 h. Group K (n = 24) and Group C (n = 20) were demographically similar. During the first 24 h, Group K used significantly less meperidine (P < 0.05). Postoperative pain at rest and with movement, and patient satisfaction, did not differ significantly between groups, except that worst pain at 12 h was less in Group K (P < 0.005). The two groups were similar with respect to patient recovery and side effects. IV ketorolac, as an adjunct to PCEA after cesarean delivery, produced a meperidine dose-sparing effect of approximately 30%, but did not significantly improve pain relief, reduce opioid-related side effects, or change patient outcome.

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Anesthesia & Analgesia® is published for the International Anesthesia Research Society® by Lippincott Williams & Wilkins with the assistance of Stanford University Libraries' HighWire Press®. Copyright 2006 by the International Anesthesia Research Society. Online ISSN: 1526-7598   Print ISSN: 0003-2999