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Sleep cyclic alternating pattern in normal school-age children.

Oliviero Bruni1, Raffaele Ferri, Silvia Miano

  • 1Department of Developmental Neurology and Psychiatry, Center for Pediatric Sleep Disorders, University of Rome La Sapienza, Via dei Sabelli 108, 00185 Rome, Italy. oliviero.bruni@uniroma1.it

Clinical Neurophysiology : Official Journal of the International Federation of Clinical Neurophysiology
|November 6, 2002
PubMed
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Cyclic alternating pattern (CAP) sleep in children increases with sleep depth, particularly during slow wave sleep (SWS). The study establishes a baseline for CAP parameters in school-age children, noting a peak interval around 25 seconds for A1 phases.

Area of Science:

  • Neuroscience
  • Sleep Medicine
  • Pediatric Sleep

Background:

  • Cyclic alternating pattern (CAP) is a physiological phenomenon in sleep.
  • Understanding CAP in children is crucial for establishing normative sleep data.
  • Previous research has not fully characterized CAP parameters in school-age children.

Purpose of the Study:

  • To establish a standardized database for cyclic alternating pattern (CAP) parameters in school-age children.
  • To evaluate the characteristics of CAP during different sleep stages in healthy children.

Main Methods:

  • Polysomnography recordings were conducted on 10 healthy school-age children over two nights.
  • Sleep macrostructure and CAP were scored visually according to established criteria.
  • CAP parameters, including rate, duration, and phase distribution, were quantified.

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Main Results:

  • CAP rate increased with sleep depth, showing higher values during slow wave sleep (SWS).
  • CAP duration was longest in non-REM sleep stage 2 (S2), followed by SWS and sleep stage 1 (S1).
  • Phase A1 was the most frequent CAP subtype (84.45%), occurring more often during SWS. The interval between consecutive A1 phases peaked around 25 seconds.

Conclusions:

  • CAP analysis in school-age children reveals increased CAP rate during SWS and a high prevalence of A1 phases.
  • A peak interval of approximately 25 seconds was observed between consecutive A1 phases.
  • This study provides a foundational database for CAP parameters in this age group.