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Related Experiment Videos

Epidural morphine for postoperative pain relief.

E Hjortsø, T Vester-Andersen, I W Møller

    Acta Anaesthesiologica Scandinavica
    |October 1, 1982
    PubMed
    Summary

    Epidural morphine at 4 mg significantly reduced pain scores after surgery, with a delayed onset but long duration. The 2 mg dose showed no significant analgesic effect compared to placebo.

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    Area of Science:

    • Anesthesiology
    • Pharmacology

    Background:

    • Epidural analgesia is crucial for postoperative pain management.
    • Morphine is a common opioid used for epidural pain relief.

    Purpose of the Study:

    • To evaluate the analgesic efficacy, onset, and duration of epidural morphine (2 mg and 4 mg) versus placebo in patients undergoing lower abdominal or urological surgery.

    Main Methods:

    • A double-blind, placebo-controlled clinical study involving 45 patients.
    • Patients received either 2 mg epidural morphine, 4 mg epidural morphine, or placebo.
    • Pain scores were assessed to determine analgesic effect, latency, and duration.

    Main Results:

    • The 4 mg epidural morphine group showed a significant decrease in pain scores, with an onset of action at 60 minutes.
    • No significant difference in pain relief was observed between the 2 mg morphine group and the placebo group.
    • The 4 mg dose demonstrated prolonged analgesia, with 8/15 patients requiring no additional analgesics within 24 hours, compared to 2/14 (placebo) and 3/15 (2 mg group).

    Conclusions:

    • Epidural morphine at a 4 mg dose provides effective, long-lasting analgesia for postoperative pain following lower abdominal or urological surgery.
    • A 2 mg dose of epidural morphine is not significantly more effective than placebo for this patient population.
    • A delayed onset of action should be considered when administering 4 mg epidural morphine.

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