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  • Title: Addition of 0.1% bupivacaine to buprenorphine and droperidol in patient-controlled epidural analgesia improved postoperative pain scores on coughing after gynecological surgery.
    Author: Inoue S, Mitsuhata H, Kawakami T, Shimohata K, Hirabayashi Y, Seo N.
    Journal: J Clin Anesth; 2005 May; 17(3):167-71. PubMed ID: 15896581.
    Abstract:
    STUDY OBJECTIVE: To compare the analgesic efficacy of additional 0.1% bupivacaine to patient-controlled epidural analgesia (PCEA) using buprenorphine and droperidol after gynecological surgery. DESIGN: Randomized, double-blinded study. SETTING: Operating theater and general ward at Jichi Medical School Hospital. PATIENTS: Thirty patients with American Society of Anesthesiologists physical status I and II scheduled for gynecological surgery. INTERVENTIONS: Patients received combined general and epidural anesthesia for surgery and epidural analgesia for postoperative analgesia. Patients were assigned to receive PCEA with or without 0.1% bupivacaine. Group 1 (n = 15) received buprenorphine 20 microg and droperidol 0.1 mg diluted with saline, and group 2 (n = 15) received bupivacaine 2 mg, buprenorphine 20 microg, and droperidol 0.1 mg diluted with saline (0.1% bupivacaine solution) in a bolus dose of the PCEA, respectively. No background epidural infusion was used. MEASUREMENTS: Visual analog pain scale (VAPS) scores at rest and on coughing, and cumulative frequency of self-administrated analgesic solution in PCEA were recorded at 24 and 48 hours postoperatively. MAIN RESULTS: There were no significant differences noted between the groups in VAPS scores at rest or in cumulative volumes of PCEA solution in 24 or 48 hours postoperatively. Median VAPS scores on coughing in group 2 were significantly lower than those values in group 1 at 24 hours (36 vs 65 mm, P < .001) and 48 hours (32 vs 54 mm, P = .036) postoperatively. CONCLUSIONS: Addition of 0.1% bupivacaine to PCEA using buprenorphine and droperidol provides better analgesia on coughing after gynecological surgery.
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