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A Method for Estimating Pulse Wave Amplitude Variability in children with Sleep Disordered Breathing

Xiao Liu, Yvonne Pamula, Mark Kohler

    Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual International Conference
    |January 18, 2020
    PubMed

    Insights

    Children with sleep disordered breathing (SDB) exhibit altered autonomic nervous system activity during sleep. This study found wider pulse wave amplitude dynamics in SDB children, indicating a stronger autonomic response.

    Area of Science:

    • Pediatric Pulmonology
    • Cardiovascular Physiology
    • Autonomic Neuroscience

    Background:

    • Sleep disordered breathing (SDB) is a prevalent pediatric condition impacting sleep quality and daytime function.
    • SDB is linked to increased respiratory workload, restless sleep, and daytime sleepiness in children.
    • Chronic autonomic activation is hypothesized to drive cardiovascular changes and future disease risk in children with SDB.

    Purpose of the Study:

    • To investigate the impact of SDB on autonomic activation in children.
    • To analyze pulse wave amplitude (PWA) dynamics from photoplethysmography (PPG) signals as an indicator of autonomic response.

    Main Methods:

    • Utilized an envelope estimation method to extract PWA from PPG signals during sleep.
    • Compared PWA dynamics between a cohort of 40 children with SDB and 40 matched controls.

    Main Results:

    • Children with SDB demonstrated a significantly wider dynamic distribution in PWA compared to controls.
    • This wider PWA distribution suggests a higher and more robust autonomic response in SDB children during sleep.

    Conclusions:

    • Sleep disordered breathing alters pulse wave amplitude dynamics during sleep in children.
    • These PWA alterations indicate significant changes in autonomic activation associated with pediatric SDB.

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