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Heart-rate variability in brain-damaged adults.

R I Lowensohn, M Weiss, E H Hon

    Lancet (London, England)
    |March 19, 1977
    PubMed
    Summary

    Adult heart-rate variability may indicate central nervous system condition. Reduced heart-rate variability suggests severe brain damage and reflects neuronal function recovery after injury.

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    Area of Science:

    • Neuroscience
    • Cardiology
    • Neurology

    Background:

    • Investigating the relationship between adult heart-rate characteristics and central nervous system (CNS) condition.
    • Comparing adult heart-rate patterns to known fetal heart-rate-CNS correlations.
    • Examining neurological deficit patients with acute onset, excluding drug effects and hypoxia.

    Observation:

    • Studied ten patients with acute neurological deficits.
    • Monitored heart-rate variability in relation to neurological status and intracranial pressure.
    • Observed changes in cyclic heart-rate patterns.

    Findings:

    • Severe brain damage significantly reduces normal cyclic heart-rate changes.
    • Increased intracranial pressure leads to a rapid decrease in heart-rate variability.
    • The recovery of heart-rate variability correlates with the subsequent state of neuronal function, even post-normalization of intracranial pressure.

    Implications:

    • Heart-rate variability may serve as a non-invasive indicator of the functional state of the adult central nervous system.
    • This finding could offer new insights into monitoring brain injury and recovery.
    • Further research is warranted to validate heart-rate variability as a CNS biomarker.

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