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Related Experiment Videos

EEG changes 24 hours after myelography with metrizamide.

Y Koshino, K Isaki, Y Kihara

    Folia Psychiatrica Et Neurologica Japonica
    |January 1, 1985
    PubMed
    Summary

    Electroencephalogram (EEG) abnormalities increased significantly after metrizamide myelography, particularly in patients with normal baseline EEGs. Central nervous system involvement correlated with severe EEG slowing, indicating potential neurological effects.

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    Area of Science:

    • Neurology
    • Radiology
    • Neurophysiology

    Background:

    • Metrizamide myelography is an imaging technique used to visualize the spinal cord.
    • Understanding the potential neurological side effects of metrizamide is crucial for patient safety.

    Purpose of the Study:

    • To prospectively evaluate electroencephalogram (EEG) changes after metrizamide myelography.
    • To assess the relationship between EEG alterations and clinical variables.

    Main Methods:

    • A prospective study involving 34 patients (aged 17-79 years) undergoing metrizamide myelography.
    • EEG recordings were taken before and 22-26 hours after myelography.
    • Standard doses of metrizamide were administered via lumbar or lateral cervical puncture.

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    Main Results:

    • EEG abnormalities developed in 15 of 20 patients with normal baseline EEGs.
    • EEG tracings worsened in 10 of 14 patients with pre-existing abnormalities.
    • Common EEG findings included high-voltage delta and theta activity; three patients exhibited triphasic waves.
    • No correlation was found between EEG changes and clinical variables.

    Conclusions:

    • Metrizamide myelography can lead to significant EEG alterations.
    • Central nervous system involvement by metrizamide appears associated with severe EEG slowing.
    • Further research may be needed to fully elucidate the neurophysiological impact of metrizamide.