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Flexor and extensor postures in sedative drug-induced coma

D A Greenberg, R P Simon

    Neurology
    |April 1, 1982
    PubMed
    Summary
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    Flexor and extensor postural reflexes in coma can indicate sedative drug overdose. These early, transient responses in patients with normal pupillary reactivity suggest this specific cause of altered consciousness.

    Area of Science:

    • Neurology
    • Toxicology
    • Clinical Medicine

    Background:

    • Flexor and extensor postural reflexes are typically associated with structural or metabolic coma.
    • These reflexes indicate brainstem dysfunction or disruption of descending motor pathways.

    Purpose of the Study:

    • To investigate flexor and extensor posturing as an early sign of coma due to sedative drug ingestion.
    • To differentiate sedative-induced coma from other causes based on specific neurological signs.

    Main Methods:

    • Case series reporting on 10 patients.
    • Clinical observation of neurological signs, including postural reflexes, pupillary reactivity, and ocular movements.
    • Correlation of clinical findings with the suspected cause of coma (sedative drug ingestion).

    Related Experiment Videos

    Main Results:

    • Ten patients presented with early and transient flexor or extensor posturing.
    • These postural responses occurred in the context of coma resulting from sedative drug overdose.
    • Patients exhibited normal pupillary reactivity but absent ocular movements.

    Conclusions:

    • Flexor and extensor posturing can be an early indicator of coma caused by sedative drug overdose.
    • In comatose patients with preserved pupillary reactivity and absent ocular movements, these reflexes strongly suggest sedative intoxication.