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Duration criterion of respiratory events for children with obstructive sleep apnea
Hongbin Li1, Wentong Ge1, Jun Tai1
1Beijing Key Laboratory for Pediatric Otolaryngology, Head and Neck Science, Department of Otolaryngology Head and Neck Surgery, Beijing Pediatric Research Institute, Beijing Children's Hospital, Capital Medical University, Beijing, China.
Insights
The duration of respiratory events in children with obstructive sleep apnea syndrome (OSAS) correlates with oxygen desaturation. A 5.4-second duration can define significant respiratory events in pediatric polysomnography (PSG).
Area of Science:
- Pediatric Sleep Medicine
- Respiratory Physiology
- Clinical Diagnostics
Background:
- Obstructive sleep apnea syndrome (OSAS) in children requires accurate diagnostic criteria.
- Standard nocturnal polysomnography (PSG) is used to diagnose pediatric OSAS.
- Establishing precise event duration criteria in pediatric PSG is crucial for diagnosis.
Purpose of the Study:
- To investigate the duration criterion for respiratory events in children diagnosed with OSAS using PSG.
- To establish reference values for respiratory event duration in pediatric PSG studies.
Main Methods:
- Analysis of standard nocturnal polysomnograms (PSG) from 107 children diagnosed with OSAS.
- Random selection of pediatric patients diagnosed between January 2004 and May 2006.
- Observation of arterial oxygen saturation decrease (ΔSaO2) and corresponding respiratory event durations.
Main Results:
- A significant positive correlation was found between oxygen desaturation levels (ΔSaO2=0-17%) and respiratory event durations (P<0.001).
- No significant differences in event durations were observed between REM and NREM sleep or between genders.
- A significant positive correlation was noted between age and respiratory event duration for a 4% oxygen desaturation (ΔSaO2=4%).
- The lower limit of the 95% confidence interval for a 4% oxygen desaturation event duration was determined to be 5.4 seconds.
Conclusions:
- Polysomnography (PSG) data can be used to establish duration criteria for significant respiratory events in pediatric OSAS.
- A duration criterion of 5.4 seconds is proposed for defining significant respiratory events in pediatric sleep studies.
- This study provides valuable reference values for interpreting pediatric polysomnograms (PSG).
Objective:
To investigate the duration criterion of respiratory events in children with obstructive sleep apnea syndrome (OSAS) by analyzing standard nocturnal polysomnograms (PSG). To provide reference values for pediatric PSG.
Methods:
107 OSAS children diagnosed by PSG from January 2004 to May 2006 were randomly selected. The decrease in arterial oxygen saturation (ΔSaO2) and the corresponding event duration of each respiratory event were observed.
Results:
(1) There was significant positive correlation between oxygen desaturation values (ΔSaO2=0-17%) and the corresponding durations of respiratory events (P<0.001). (2) There was no significant difference in durations of respiratory events in rapid eye movement (REM) sleep and NREM sleep, the demographics between male and female children. (3) Significant positive correlation between age and duration of respiratory events (apnea/hypopnea) when oxygen desaturation values equal to 4% (ΔSaO2=4%) was observed. (4) The lower limit of 95% confidence intervals of which duration of oxygen desaturation value equals to 4% was 5.4s.
Conclusion:
(1) PSG studies may allow the establishment of the duration criterion of significant respiratory events; (2) 5.4s can be defined as duration criteria of respiratory events; (3) the present study provides reference values for Pediatric PSG.
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