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Related Experiment Videos

Cardiovascular reflexes in syringomyelia

M A Nogués, P K Newman, V J Male

    Brain : a Journal of Neurology
    |December 1, 1982
    PubMed
    Summary

    Cardiovascular reflexes can be impaired in patients with syringomyelia, even without autonomic dysfunction symptoms. This may explain sudden deaths and help pinpoint the defect

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    Area of Science:

    • Neurology
    • Cardiology
    • Autonomic Nervous System Function

    Background:

    • Syringomyelia can affect the spinal cord and brainstem.
    • Cardiovascular reflex control is vital for maintaining homeostasis.
    • Autonomic dysfunction is a known complication of neurological disorders.

    Purpose of the Study:

    • To assess cardiovascular reflexes in patients with syringomyelia.
    • To investigate the relationship between brainstem involvement and reflex impairment.
    • To explore the implications for sudden death in these patients.

    Main Methods:

    • Noninvasive cardiovascular reflex tests were performed.
    • Patients with syringomyelia (spinal cord only) and syringobulbia (with brainstem signs) were studied.
    • A control group was included for comparison.

    Main Results:

    • Postural hypotension was more common in patients with bilateral brainstem signs.
    • Vagal cardiovascular reflexes were disturbed in patients with Xth cranial nerve or other brainstem involvement.
    • Impaired reflexes were observed even in patients without overt autonomic dysfunction symptoms.

    Conclusions:

    • Cardiovascular reflexes are frequently impaired in syringomyelia, particularly with brainstem involvement.
    • The findings suggest a potential link between reflex dysfunction and sudden death.
    • These results aid in understanding the anatomical localization of neurological defects affecting cardiovascular control.

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