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Reduced sleep spindle activity in children with primary snoring

Pablo E Brockmann1, Oliviero Bruni2, Leila Kheirandish-Gozal3

  • 1Department of Pediatric Cardiology and Pulmonology, Division of Pediatrics, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile; Pediatric Sleep Center, School of Medicine, Pontificia Universidad Católica de Chile, Santiago, Chile.

Sleep Medicine
|December 24, 2019
PubMed

Insights

Children who habitually snore have reduced sleep spindle activity, even with normal sleep studies. This reduced spindle activity may indicate sleep disruption and contribute to health problems in snoring children.

Area of Science:

  • Pediatric Sleep Medicine
  • Neurophysiology

Background:

  • Habitual snoring in children is linked to potential health issues, even when polysomnography (PSG) results appear normal.
  • Understanding subclinical sleep disturbances is crucial for identifying at-risk children.

Purpose of the Study:

  • To investigate differences in sleep spindle activity between children with primary snoring (PS) and healthy controls.
  • To determine if primary snoring affects fast and slow sleep spindle characteristics.

Main Methods:

  • Polysomnography (PSG) recordings were analyzed for 20 children with primary snoring and 20 age/gender-matched non-snoring controls.
  • Sleep spindle activity, including fast (>13 Hz) and slow (<13 Hz) spindles, was quantified across non-rapid eye movement (NREM) sleep stages.
  • Spindle indices and event distribution were compared between the primary snoring and control groups.

Main Results:

  • Children with primary snoring exhibited significantly lower overall spindle activity across all NREM sleep stages compared to controls (p < 0.05).
  • Fast spindles were observed in 40% of primary snoring children versus 25% of controls.
  • Sleep spindle activity, particularly in NREM stage 2, was significantly higher in controls (76%) than in primary snoring children (43%; p < 0.001).

Conclusions:

  • Primary snoring in children is associated with significantly reduced sleep spindle activity compared to healthy peers.
  • Diminished sleep spindle activity may serve as a biomarker for sleep disruption in snoring children.
  • This reduction could play a role in the development of disease-related complications in children with primary snoring.
Abstract

Keywords:
PediatricSleep apneaSleep microstructureSleep spindlesSnoring

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