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Characterization of a sleep architectural phenotype in children with Down syndrome

Lauren C Nisbet1, Nicole N Phillips, Timothy F Hoban

  • 1The Ritchie Centre, Monash Institute of Medical Research, Monash University, Melbourne, Victoria, Australia.

Sleep & Breathing = Schlaf & Atmung
|December 16, 2014
PubMed

Insights

Children with Down syndrome (DS) have distinct sleep patterns, including less REM sleep and more slow-wave sleep, independent of obstructive sleep apnea (OSA). These sleep alterations may impact learning and behavior in children with DS.

Area of Science:

  • Pediatric Sleep Medicine
  • Genetics and Neurodevelopment
  • Sleep Physiology

Background:

  • Obstructive sleep apnea (OSA) is common in children with Down syndrome (DS), contributing to sleep fragmentation.
  • However, poor sleep in DS is only partially explained by OSA, suggesting other underlying factors.
  • A distinct sleep phenotype in DS, independent of OSA, may exist throughout childhood.

Purpose of the Study:

  • To investigate the existence of a unique sleep phenotype in children with Down syndrome (DS).
  • To determine if this sleep phenotype is independent of obstructive sleep apnea (OSA) severity.
  • To analyze sleep architecture alterations across different age groups in children with DS.

Main Methods:

  • Retrospective analysis of polysomnography data from children with DS and matched controls.
  • Comparison of sleep architecture parameters between DS and control groups across various age brackets.
  • Inclusion of 130 DS subjects and 130 matched controls, aged 0-17.8 years.

Main Results:

  • Children with DS showed lower sleep efficiency and higher slow-wave sleep percentages across all age groups (2-17.9 years).
  • Reduced rapid-eye movement (REM) sleep percentage was observed in DS children, particularly significant between 7-11.9 years.
  • N1 sleep patterns differed, with increases in younger DS children (2-6.9 years) and decreases in older DS children (12-17.9 years) compared to controls.

Conclusions:

  • Children with Down syndrome exhibit altered sleep architecture compared to age-matched controls, irrespective of OSA severity.
  • Key findings include reduced REM sleep and increased slow-wave sleep, suggesting a DS-specific sleep phenotype.
  • These sleep alterations may have significant implications for cognitive functions, learning, memory, and behavior in the DS population.
Abstract

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