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Spindle coma: incidence, clinicopathologic correlates, and prognostic value

P Hansotia, P Gottschalk, P Green

    Neurology
    |January 1, 1981
    PubMed
    Summary
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    The presence of sleep spindles during coma, identified via electroencephalogram (EEG), does not predict patient outcomes. This finding applies to various causes of coma, including head injury and cerebral anoxia.

    Area of Science:

    • Neurology
    • Clinical Neurophysiology

    Background:

    • Coma is a state of profound unconsciousness.
    • Electroencephalogram (EEG) patterns can provide insights into brain function during coma.
    • The significance of specific EEG patterns, such as "spindle coma," remains incompletely understood.

    Purpose of the Study:

    • To investigate the occurrence and clinical significance of the "spindle coma" EEG pattern.
    • To determine if "spindle coma" correlates with the cause or prognosis of coma.

    Main Methods:

    • Clinical and electrographic assessment of 370 comatose patients.
    • Analysis of EEG patterns, focusing on the "spindle coma" finding.
    • Correlation of EEG findings with clinical variables and autopsy data.

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    Main Results:

    • The "spindle coma" pattern was observed in 5.7% of the studied patients.
    • Causes of coma included head injury, intracranial hemorrhage, and cerebral anoxia.
    • Clinical parameters (consciousness, pupillary response, etc.) and autopsy findings did not correlate with "spindle coma" or its outcome.
    • No characteristic pathological lesion was identified in relation to "spindle coma."

    Conclusions:

    • Sleep spindles occurring during coma are not associated with the prognosis of the comatose state.
    • The "spindle coma" EEG pattern lacks predictive value for patient outcomes.