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Related Experiment Videos

Breathing patterns during sleep in stable asthmatic children.

H Asai1, N Furuya, T Ando

  • 1First Department of Pediatrics, Dokkyo University School of Medicine, Tochigi, Japan.

The Journal of Asthma : Official Journal of the Association for the Care of Asthma
|January 1, 1991
PubMed
Summary

Stable asthmatic children exhibit altered breathing patterns during sleep. Nocturnal sleep studies revealed significant changes in expiratory time (TE) and the TE/inspiratory time ratio (TE/TI) in asthmatic children compared to controls.

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Area of Science:

  • Pediatric Pulmonology
  • Sleep Medicine
  • Respiratory Physiology

Background:

  • Asthma is a chronic respiratory condition affecting children, with potential impacts on sleep quality.
  • Breathing pattern abnormalities during sleep may be an indicator of underlying respiratory dysfunction in asthmatic children.
  • Nocturnal breathing patterns in asymptomatic asthmatic children require further investigation.

Purpose of the Study:

  • To investigate and compare nocturnal breathing patterns in asymptomatic asthmatic children and nonasthmatic controls.
  • To identify specific breathing indices that differentiate asthmatic children during sleep.
  • To assess the stability of breathing patterns throughout the night in both groups.

Main Methods:

  • Utilized impedance pneumography to monitor breathing patterns in 15 asymptomatic asthmatic children and 11 nonasthmatic controls.

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  • Measured inspiratory time (TI), expiratory time (TE), and the expiratory time/inspiratory time ratio (TE/TI) as key indices.
  • Compared breathing pattern data obtained during daytime and nocturnal sleep.

    • Main Results:

    • No significant differences in TI, TE, or TE/TI were observed between asthmatics and controls during daytime.
    • During nocturnal sleep, asthmatic children showed a significant increase in TE and TE/TI compared to their daytime values.
    • Controls exhibited minimal overnight variation in these breathing parameters, unlike the asthmatic group.

    Conclusions:

    • Asymptomatic asthmatic children demonstrate abnormal breathing patterns specifically during nocturnal sleep.
    • Changes in expiratory time and the TE/TI ratio during sleep are indicative of altered respiratory mechanics in stable childhood asthma.
    • These findings suggest that sleep monitoring may reveal subclinical respiratory abnormalities in pediatric asthma.