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Snore-associated sleep fragmentation in infancy: mental development effects and contribution of secondhand cigarette

Hawley E Montgomery-Downs1, David Gozal

  • 1Department of Psychology, West Virginia University, PO Box 6040, Morgantown, WV 26506-6040, USA. hawley.montgomery-downs@mail.wvu.edu

Pediatrics
|March 3, 2006
PubMed

Insights

Infant snoring, even without breathing issues, is linked to lower mental development scores. This suggests snoring may indicate early sleep-disordered breathing, and secondhand smoke worsens its impact.

Area of Science:

  • Pediatric Sleep Medicine
  • Developmental Neuroscience

Background:

  • Sleep-disordered breathing (SDB) is linked to neurocognitive deficits in older children.
  • Research on snoring's impact on infant development, especially without gas exchange issues, is limited.

Purpose of the Study:

  • To investigate the association between snoring and developmental performance in infants.
  • To determine if snoring without apnea/hypopnea affects infant cognitive abilities.

Main Methods:

  • Polysomnography was conducted on 35 healthy infants (8.2 months avg).
  • Infants were assessed using the Bayley Scales of Infant Development (Mental Development Index - MDI).

Main Results:

  • No infants had apnea or hypopnea (apnea-hypopnea index = 0).
  • Higher snoring-arousal indices correlated significantly with lower MDI scores.
  • Secondhand smoke exposure increased arousal frequency in snoring infants.

Conclusions:

  • Infant snoring, indicated by arousal frequency, is associated with lower mental development scores, even without apnea.
  • Snoring may represent an early sign of SDB spectrum in infants.
  • Secondhand smoke may exacerbate the negative effects of infant snoring on development.
Abstract

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