• J Clin Anesth · Mar 2004

    Clinical Trial

    The effectiveness of continuous epidural infusion of low-dose fentanyl and mepivacaine in perioperative analgesia and hemodynamic control in mastectomy patients.

    • Yoshifumi Kotake, Midori Matsumoto, Hiroshi Morisaki, and Junzo Takeda.
    • Department of Anesthesiology, Keio University School of Medicine, Tokyo, Japan. ykotake@sc.itc.keio.ac.jp
    • J Clin Anesth. 2004 Mar 1;16(2):88-91.

    Study ObjectivesTo investigate, in mastectomy patients, the effectiveness of continuous cervical epidural block using a low-dose fentanyl infusion in combination with local anesthetics.DesignProspective, observational study.Setting450-bed, university-affiliated hospital.Patients21 ASA physical status I and II female patients undergoing modified radical mastectomy.InterventionsAn epidural catheter was inserted at the C(7)-Th(1) interspace before the induction of anesthesia. Anesthesia was maintained using a low concentration of sevoflurane with nitrous oxide-oxygen (N(2)O-O(2)). A mixture of 100 microg fentanyl and 49 mL of 1% mepivacaine was prepared, and 7 mL of this solution was epidurally injected before the initial incision. This same solution was continuously infused at a rate of 7 mL/hr (fentanyl 17.5 microg/hr) throughout the anesthesia, and at 2 mL/hr (fentanyl 5 microg/hr) postoperatively.Measurements And Main ResultsIntraoperative mean arterial pressure (MAP) and heart rate (HR), postoperative pain and analgesic use, and the frequency of postoperative side effects of anesthesia, including nausea, dizziness, and respiratory depression, were recorded. The protocol described provided stable intraoperative hemodynamic control with no or low-dose nicardipine infusion. Sufficient postoperative analgesia was achieved in 18 of 21 patients. One patient reported postoperative nausea, and no other side effects were reported.ConclusionsContinuous epidural infusion of the low-dose fentanyl mixture described above provides adequate intraoperative hemodynamic control and postoperative pain relief, with a low rate of side effects in mastectomy patients.

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