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  • Title: [Efficacy of continuous subcutaneous pentazocine infusion for the postoperative analgesia in lower abdominal surgery].
    Author: Suzuki S, Nonaka A, Abe F.
    Journal: Masui; 2005 Jun; 54(6):627-31. PubMed ID: 15966379.
    Abstract:
    BACKGROUND: Continuous subcutaneous infusion (CSI) of analgesics may be an alternative for pain control in patients without an epidural catheter. The aim of this study was to investigate the efficacy of CSI using pentazocine in lower abdominal surgery with inhalation anesthesia or with total intravenous anesthesia. METHODS: One hundred forty-seven patients scheduled for gynecological abdominal surgery were analyzed retrospectively. Anesthesia was induced with propofol and was maintained with propofol infusion or isoflurane-nitrous oxide inhalation. All patients received 30-75 mg of pentazocine before incision. At the end of surgery, CSI of pentazocine was begun at a rate of 0.5 ml x hr(-1) x Given regimen was pentazocine 240-390 mg and droperidol 5 mg with 1% lidocaine, and the total amount of dose was 40 ml. RESULTS: Over 80% of patients were assessed to have effective pain relief and minimum side effects. Patients were classified into two groups by anesthetics during anesthesia; propofol, pentazocine, ketamine group (PPK group, n = 61); nitrous oxide, isoflurane, pentazocine group (GOI group, n=88). There were no differences between the two groups regarding postoperative pain relief, while total dose of pentazocine used during anesthesia were lower in GOI group than PPK group. CONCLUSIONS: In patients undergoing lower abdominal surgery, CSI of pentazocine provided effective postoperative pain relief and effectiveness did not depend on anesthetics during anesthesia.
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