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Auditory brainstem response in infant hydrocephalus.

D L McPherson, R Amlie, E Foltz

    Child'S Nervous System : Chns : Official Journal of the International Society for Pediatric Neurosurgery
    |January 1, 1985
    PubMed
    Summary
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    Early cerebrospinal fluid (CSF) shunt placement in infants with hydrocephalus generally improves auditory brainstem response (ABR) outcomes. Prompt intervention may prevent auditory pathway damage from elevated CSF pressure.

    Area of Science:

    • Pediatric Neurology
    • Neurophysiology
    • Neurosurgery

    Background:

    • Hydrocephalus in infants can lead to increased intracranial pressure.
    • Elevated pressure may compress neural structures, potentially affecting auditory pathways.
    • Auditory brainstem response (ABR) is a key diagnostic tool for assessing auditory pathway function.

    Purpose of the Study:

    • To evaluate the impact of cerebrospinal fluid (CSF) shunt placement on auditory brainstem response (ABR) in infants with hydrocephalus.
    • To explore the relationship between the timing of shunt insertion and ABR outcomes.

    Main Methods:

    • Auditory brainstem response (ABR) measurements were taken in 15 infants with hydrocephalus before and after CSF shunt insertion.
    • Infants' ages ranged from 32 to 43 weeks post-conception.

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  • Data were analyzed to observe changes in ABR following surgical intervention.

    • Main Results:

    • A general improvement in ABR was observed after CSF shunt placement.
    • No specific patterns definitively explained the abnormal ABR prior to shunting.
    • Increased CSF pressure is hypothesized to cause neuropraxis by compressing auditory pathway fibers and generators.
    • Earlier shunt insertion correlated with better ABR outcomes compared to later insertion.

    Conclusions:

    • CSF shunt placement positively influences ABR in infants with hydrocephalus.
    • Early intervention is crucial for mitigating the negative effects of elevated CSF pressure on auditory pathway function.
    • The findings suggest that prompt management of hydrocephalus can lead to improved neurophysiological outcomes.