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Cyclic alternating pattern: A window into pediatric sleep

Oliviero Bruni1, Luana Novelli, Silvia Miano

  • 1Department of Developmental Neurology and Psychiatry, Centre for Pediatric Sleep Disorders, Sapienza University, Rome, Italy. oliviero.bruni@uniroma1.it

Sleep Medicine
|April 30, 2010
PubMed

Insights

Cyclic alternating pattern (CAP) in children changes significantly with age. This review examines CAP in normal development and various pediatric conditions, revealing its potential as a diagnostic tool for sleep disturbances.

Area of Science:

  • Pediatric Neurology
  • Sleep Medicine
  • Neurophysiology

Background:

  • Cyclic alternating pattern (CAP) exhibits significant age-related variations in infants and children.
  • Understanding these changes is crucial for interpreting CAP in clinical pediatric sleep studies.

Purpose of the Study:

  • To review age-related changes in CAP from birth to peripubertal age.
  • To analyze CAP alterations in various pediatric developmental and clinical conditions.
  • To explore the neurophysiological mechanisms underlying sleep disturbances using CAP.

Main Methods:

  • Literature review focusing on studies of CAP in normal pediatric development.
  • Systematic analysis of research on CAP in pediatric sleep disorders, including sleep-disordered breathing, disorders of arousal, narcolepsy, and learning disabilities.
  • Examination of CAP rate and A1 subtype prevalence in relation to cognitive function.

Main Results:

  • CAP shows dramatic age-related changes from birth through childhood.
  • CAP rate is generally decreased in pediatric developmental conditions, except in disorders of arousal and some sleep apnea cases.
  • A consistent reduction in CAP A1 subtypes is observed, correlating with cognitive impairment severity.

Conclusions:

  • CAP analysis provides valuable insights into pediatric sleep disturbances and neurophysiological mechanisms.
  • CAP serves as a "window" into pediatric sleep, aiding in understanding the impact of pathology and sleep-protective mechanisms.
  • CAP metrics can help elucidate how the sleeping brain responds to disease and attempts to mitigate disturbances.

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