Polysomnographic values in children 2-9 years old

Additional data and review of the literature

Nadav Traeger, Brian Schultz, Avrum N. Pollock, Thornton Mason, Carole L. Marcus, Raanan Arens

Research output: Contribution to journalArticle

201 Citations (Scopus)

Abstract

The establishment of normal pediatric polysomnographic parameters is important for both clinical and research interests. Our objectives were to describe respiratory events, paradoxical breathing, periodic limb movements, and sleep architecture of children at the age of peak incidence of obstructive sleep apnea syndrome. We performed a retrospective cross-sectional analysis of a prospective cohort study of 66 children, 2-9 years old, at the Sleep Disorders Center at the Children's Hospital of Philadelphia. Subjects screened by questionnaire underwent a standard polysomnogram. The percent of total sleep time spent in sleep stages 1, 2, 3, 4, and rapid eye movement (REM) were 4 ± 3%, 44 ± 10%, 10 ± 6%, 22 ± 8%, and 21 ± 6%, respectively. The arousal and awakening index was 11.2 ± 4.3/hr. Respiratory events included a central apnea index of 0.08 ± 0.14/hr, obstructive apnea index of 0.01 ± 0.03/hr, and obstructive hypopnea index of 0.3 ± 0.5/hr. The baseline arterial oxygen saturation (SpO 2) was 97 ± 1%, with a nadir of 92 ± 3%. The index of periodic limb movements in sleep (PLMS) was 1.3 ± 2.2/hr. Paradoxical breathing appeared significantly more frequent with piezo crystal effort belts (40 ± 24% of epochs) than with respiratory inductive plethysmography (1.5 ± 3% of epochs). We describe the occurrence of hypopneas during sleep, arousals and awakenings, and PLMS. We illustrate how different technologies can vary the apparent amount of paradoxical breathing. We also confirm previous data on the frequency distribution of sleep stages, SpO2, and relative rarity of respiratory events in this age group.

Original languageEnglish (US)
Pages (from-to)22-30
Number of pages9
JournalPediatric Pulmonology
Volume40
Issue number1
DOIs
StatePublished - Jul 2005
Externally publishedYes

Fingerprint

Sleep
Respiration
Extremities
Sleep Stages
Arousal
Central Sleep Apnea
Plethysmography
REM Sleep
Sleep Apnea Syndromes
Obstructive Sleep Apnea
Apnea
Cohort Studies
Age Groups
Cross-Sectional Studies
Prospective Studies
Pediatrics
Oxygen
Technology
Incidence
Research

Keywords

  • Apnea
  • Children
  • PLMS
  • Polysomnography
  • Sleep

ASJC Scopus subject areas

  • Pediatrics, Perinatology, and Child Health
  • Pulmonary and Respiratory Medicine

Cite this

Polysomnographic values in children 2-9 years old : Additional data and review of the literature. / Traeger, Nadav; Schultz, Brian; Pollock, Avrum N.; Mason, Thornton; Marcus, Carole L.; Arens, Raanan.

In: Pediatric Pulmonology, Vol. 40, No. 1, 07.2005, p. 22-30.

Research output: Contribution to journalArticle

Traeger, Nadav ; Schultz, Brian ; Pollock, Avrum N. ; Mason, Thornton ; Marcus, Carole L. ; Arens, Raanan. / Polysomnographic values in children 2-9 years old : Additional data and review of the literature. In: Pediatric Pulmonology. 2005 ; Vol. 40, No. 1. pp. 22-30.
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