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  • Title: [Continuous epidural infusion of bupivacaine and morphine for postoperative pain relief].
    Author: Uchida H, Takasaki M, Sakura S, Dehara K, Tsuji M, Kosaka Y.
    Journal: Masui; 1990 Feb; 39(2):237-42. PubMed ID: 2325257.
    Abstract:
    Forty-five patients admitted to the intensive care unit following thoracic or abdominal surgery received continuous epidural infusion of bupivacaine and morphine for 48 hours. During the first 10 hours, the patients received 0.25% bupivacaine solution with 0.005% morphine at the rate of 4 ml.h-1, and bupivacaine concentration was decreased to 0.125% with the same morphine concentration. The mean infusion rate of bupivacaine during 48 hours was 0.12 +/- 0.03 (SD) mg.kg-1.h-1 and that of morphine was 4.0 +/- 1.0 micrograms.kg-1.h-1. Thirty-one patients (69%) complained no pain on deep breathing at 24 hours and 33 patients (74%) required no other type of analgesics during this study. The mean plasma bupivacaine concentration was 0.6 +/- 0.3 microgram.ml-1 at 48 hours. Hypotension defined as systolic arterial pressure below 90 mmHg and itching were observed in 15 patients (33%), but no other severe side effects were noted. Continuous epidural infusion of bupivacaine and morphine mixture for 48 hours postoperatively provided effective pain relief with a low incidence of side effects.
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