[Pain relief with morphine, intrathecally or peridurally?]

Area of Science:

• Anesthesiology
• Pain Management
• Pharmacology

Context:

• Cancer pain and multiple rib fractures present significant pain management challenges.
• Postoperative pain requires effective and safe analgesic strategies.
• Morphine is a potent opioid analgesic used for severe pain.

Purpose:

• To compare the efficacy and safety of intrathecal morphine versus epidural morphine for pain relief.
• To evaluate the duration of analgesia and adverse events associated with different morphine administration routes.

Summary:

• Intrathecal morphine (1-2 mg) provided prolonged pain relief (25.2-31 hours) in patients with cancer pain, rib fractures, and postoperative pain.
• A higher dose of epidural morphine (4 mg) resulted in shorter pain relief duration (15.7 hours).
• Adverse events included respiratory depression with intrathecal morphine (3/26 cases) and bladder dysfunction with epidural morphine (2/30 cases).

Impact:

• Intrathecal morphine offers extended pain relief but carries a risk of respiratory depression.
• Epidural morphine provides a potentially safer alternative for postoperative pain management, despite a shorter duration of action.
• Findings suggest that epidural administration may be preferable to intrathecal for postoperative analgesia to mitigate respiratory risks.