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Related Experiment Videos

Peripheral nerve injection injury with steroid agents

S E Mackinnon, A R Hudson, F Gentili

    Plastic and Reconstructive Surgery
    |March 1, 1982
    PubMed
    Summary

    Steroid injections can harm peripheral nerves, especially when injected directly into fascicles. Some steroids cause significant nerve damage, highlighting the need for caution during administration.

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    Area of Science:

    • Neuroscience
    • Pharmacology
    • Histology

    Background:

    • Steroid agents are commonly used in medical practice.
    • Potential neurotoxic effects of these agents require thorough investigation.
    • Understanding the impact of steroid administration on neural tissues is crucial for patient safety.

    Purpose of the Study:

    • To investigate the neurotoxic potential of five common steroid agents.
    • To determine the influence of injection site on steroid-induced nerve injury.
    • To characterize the specific types of nerve damage caused by different steroid agents.

    Main Methods:

    • Histologic examination of nerve tissues.
    • Studies of microneural circulation.
    • Evaluation of blood-nerve barrier integrity using light and electron microscopy.

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    Main Results:

    • Intrafascicular injection of steroids was found to be the critical factor causing nerve damage.
    • Neurotoxicity varied among steroid agents; Dexamethasone (Decadron) showed minimal effects.
    • Hydrocortisone (Solu-Cortef) and triamcinolone hexacetonide (Aristospan) induced widespread axonal and myelin degeneration.
    • Disruption of the blood-nerve barrier was observed but considered coincidental, not causal.

    Conclusions:

    • Intrafascicular injection of common steroid agents directly impacts peripheral nerve fibers.
    • Steroid administration can disrupt the blood-nerve barrier.
    • Avoidance of more toxic steroid agents near peripheral nerves is recommended.