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The nocturnal-polysomnogram and "non-hypoxic sleep-disordered-breathing" in children

Christian Guilleminault1, Yu-Shu Huang2, Wei-Chih Chin2

  • 1Stanford University Division of Sleep Medicine, California, USA.

Sleep Medicine
|December 23, 2018
PubMed

Insights

This study identifies abnormal breathing patterns in children, distinct from hypoxia-related events, that fragment sleep. Recognizing these non-hypoxic sleep-disordered breathing patterns is crucial for timely diagnosis and treatment.

Area of Science:

  • Pediatric Sleep Medicine
  • Respiratory Physiology
  • Neurology

Background:

  • Sleep-disordered breathing (SDB) in children is often associated with hypoxia.
  • Current diagnostic guidelines primarily focus on apnea-hypopnea events and hypoxic impact.
  • Fragmented sleep in children can result from breathing abnormalities not solely linked to oxygen desaturation.

Purpose of the Study:

  • To characterize non-hypoxic sleep-disordered breathing patterns in children.
  • To investigate breathing abnormalities that lead to fragmented sleep without significant hypoxia.
  • To highlight the importance of analyzing diverse breathing patterns beyond traditional apnea-hypopnea indices.

Main Methods:

  • Review of polysomnogram (PSG) data from children with sleep complaints and low apnea-hypopnea-index (AHI ≤ 3).
  • Comparison of PSG data with and without nasal CPAP, and against control subjects.
  • Inclusion of esophageal manometry in a subgroup and nasal cannula flow data in all cases.

Main Results:

  • Abnormal breathing patterns, especially flow limitation, were more frequent and severe than apnea or hypopnea.
  • These abnormal breathing patterns were correlated with electroencephalogram (EEG) disturbances.
  • Findings indicate significant respiratory events not captured by standard AHI scoring.

Conclusions:

  • Systematic review of variables like flow limitation, mouth-breathing, and respiratory muscle activity is essential for nocturnal PSG analysis.
  • Current scoring guidelines may delay treatment for children with non-hypoxic SDB.
  • Recognition of these "non-hypoxic" sleep-disordered breathing (SDB) patterns is vital for accurate diagnosis and management.
Abstract

Keywords:
Esophageal manometryNon-hypoxic sleep disordered breathingSleep disordered breathingUpper airway resistance syndrome

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