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Full-night versus 4h evening polysomnography in children less than 2years of age

Paul E Kahlke1, Manisha B Witmans, Tareq Alabdoulsalam

  • 1Department of Pediatrics, University of Alberta, Edmonton, Alberta, Canada.

Sleep Medicine
|December 26, 2012
PubMed

Insights

Four-hour pediatric polysomnography (PSG) is a viable alternative to full-night studies for infants and young children. This abbreviated sleep study effectively identifies sleep-disordered breathing (SDB) in children aged 24 months and younger.

Area of Science:

  • Pediatric Sleep Medicine
  • Respiratory Physiology

Background:

  • Pediatric polysomnography (PSG) is resource-intensive and burdensome for young children and families.
  • There is a need for more efficient diagnostic methods for sleep-disordered breathing (SDB) in infants and toddlers.

Purpose of the Study:

  • To evaluate the efficacy of a 4-hour abbreviated PSG as an alternative to full-night PSG in children aged 24 months and younger.
  • To determine if abbreviated PSG can accurately assess sleep-disordered breathing (SDB) and obstructive sleep apnea (OSA) in this pediatric population.

Main Methods:

  • Compared results from the first 4 hours of PSG to full-night PSG in 105 children.
  • Analyzed total, obstructive, and central apnea indices.
  • Defined SDB as an apnea-hypopnea index (AHI) >1.5 events/h and OSA as an obstructive AHI >1.5 events/h, with specific cutoffs for central apneas based on age.

Main Results:

  • All subjects but one had abnormal SDB on full-night PSG; all had REM sleep in the first 4 hours.
  • 4-hour PSG demonstrated high sensitivity for detecting total AHI, obstructive AHI, and central apnea index across age groups (⩽6 months and >6 months).
  • Agreement between 4-hour and full-night PSG was lower for individuals with lower AHI values.

Conclusions:

  • The high prevalence of SDB in this cohort suggests PSG aims to characterize type and severity, not just presence/absence.
  • The high sensitivity of 4-hour PSG supports its use in children 24 months and under, particularly those ⩽6 months.
  • Abbreviated PSG offers a potentially less burdensome and more efficient diagnostic approach for pediatric sleep disorders.
Abstract

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