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Postoperative pain control with intrathecal morphine.

J Gjessing, P J Tomlin

    Anaesthesia
    |March 1, 1981
    PubMed
    Summary
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    Intrathecal morphine offers potent, long-lasting pain relief for surgical patients with minimal cognitive impact. However, it can cause delayed respiratory depression, especially in the elderly, necessitating careful dose selection.

    Area of Science:

    • Anesthesiology
    • Pharmacology
    • Clinical Surgery

    Background:

    • Intrathecal drug administration is utilized for potent and targeted pain management.
    • Morphine is a potent opioid analgesic with a well-established role in pain control.

    Purpose of the Study:

    • To evaluate the efficacy and safety of intrathecal morphine for postoperative analgesia.
    • To assess potential interactions with spinal anesthesia and anesthetic techniques.

    Main Methods:

    • A clinical study involving 32 surgical patients divided into two groups.
    • Administration of intrathecal morphine, with or without spinal block or relaxant anesthesia.

    Main Results:

    • Intrathecal morphine provided powerful and prolonged analgesia with minimal cerebral dysfunction.

    Related Experiment Videos

  • No interference with spinal anesthesia; however, persistent curarization was observed with relaxant anesthesia.
  • The primary complication was delayed-onset respiratory depression, leading to carbon dioxide narcosis in two patients.

    • Conclusions:

    • Intrathecal morphine is effective for surgical pain but carries a risk of delayed respiratory depression.
    • The elderly appear particularly susceptible to respiratory depression from intrathecal morphine, warranting dose restriction.
    • Careful patient selection and dose titration are crucial for safe intrathecal morphine use.