Polysomnographic characteristics in normal preschool and early school-aged children

Pediatrics
Hawley E Montgomery-DownsDavid Gozal

Abstract

The objective of this study was to describe overnight polysomnographic measures in normal children aged 3 to 7 years. We conducted a retrospective analysis of normal polysomnographic evaluations from participants in 2 large community-based studies of sleep-disordered breathing among preschoolers and early school-aged children at Kosair Children's Hospital Sleep Medicine Research Center at the University of Louisville. Participants included 542 healthy children with ages ranging from 3.2 to 8.6 years. Subjects were excluded from analysis if they had documented snoring during polysomnography, an obstructive apnea-hypopnea index of > or =1.0, or a periodic leg-movement index of > or =5.0. Because the greatest differences in polysomnography occurred between ages 5 and 6 years, analyses were performed for children 3 to 5 years and for ages > or =6. Sleep cyclicity was distinct between age groups, with both showing an initial brief rapid-eye-movement period, which lengthened across the night, but only the older group showing a decrease in cycle length across the night. Average obstructive apnea indices were 0.03 per hour of total sleep time (TST) for 3- to 5-year-old children and 0.05 per hour of TST for > or =6-year-old children, wh...Continue Reading

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Citations

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