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Reference values for nocturnal home pulse oximetry during sleep in primary school children
Michael S Urschitz1, Judith Wolff, Volker Von Einem
1Department of Pediatric Pulmonology and Neonatology, Hannover Medical School, Hannover, Germany.
Insights
Establishing normal pulse oximeter saturation (SpO(2)) reference values in children is crucial. This study provides home sleep SpO(2) data for primary school children, identifying uncommon baseline values below 97% and infrequent desaturations.
Area of Science:
- Pediatric Sleep Medicine
- Respiratory Physiology
- Diagnostic Monitoring
Background:
- Establishing normative data for physiological parameters is essential for accurate clinical interpretation.
- Pulse oximetry (SpO(2)) monitoring during sleep is increasingly used in pediatric care.
- Reference values for SpO(2) in healthy children during sleep are not well-defined.
Purpose of the Study:
- To establish reference values for pulse oximetry saturation (SpO(2)) in primary school-aged children during home sleep.
- To provide a basis for interpreting SpO(2) recordings in children evaluated for sleep-disordered breathing.
Main Methods:
- Analysis of SpO(2) recordings from 90 primary school children (mean age 9.3 years) during sleep.
- Calculation of artifact-free recording time (AFRT), minimum SpO(2) (SATmin), median SpO(2) (SAT(50)), and percentile-based SpO(2) values (SAT(5), SAT(10)).
- Quantification of intermittent desaturation events, including time below 90% (TI(90)) and frequency of drops (DI(4), DI(90), DI(92)).
Main Results:
- Median SpO(2) values were high: SATmin 93%, SAT(5) 97%, SAT(10) 97%, SAT(50) 98%.
- The fifth centile for SpO(2) was 87.5%, indicating infrequent significant drops.
- Intermittent desaturation events were uncommon: median TI(90) was 0.0 s/h, and median DI(4), DI(90), DI(92) were 0.8, 0.0, and 0.0 per hour, respectively.
Conclusions:
- Baseline SpO(2) values below 97% are uncommon in healthy primary school children during sleep.
- Intermittent desaturations to 90% or below are infrequent in this population.
- These reference values aid in the clinical assessment of pediatric sleep-related breathing disorders.
Objective:
To provide reference values for pulse oximeter saturation (SpO(2)) in primary school children, measured at home during sleep.
Methods:
Recordings of SpO(2) and signal quality from 100 children were randomly selected from a larger population-based sample intended to study the prevalence of sleep-disordered breathing. Recordings were analyzed for the duration of artifact-free recording time (AFRT), minimum SpO(2) (SATmin) and median SpO(2) (SAT(50)), the SpO(2) below which the child spent 5% of AFRT (SAT(5)), and the SpO(2) below which the child spent 10% of AFRT (SAT(10)). In addition, the time in seconds with SpO(2)
Results:
Ten recordings had to be excluded because of insufficient AFRT (< 5 h). Mean age of the remaining 90 children (54 girls) was 9.3 years (SD, 0.6). Median (range; fifth centile) values for SATmin, SAT(5), SAT(10), and SAT(50) were 93% (76 to 97; 87.5), 97% (88 to 99; 95), 97% (89 to 99; 96), and 98% (94 to 100; 97). Median values (range; 95th centile) for TI(90), DI(4), DI(90), and DI(92) were 0.0 s (0.0 to 5.8; 1.6), 0.8 (0.0 to 6.1; 3.9), 0.0 (0.0 to 1.2; 0.2), and 0.0 (0.0 to 2.0; 0.6).
Conclusion:
Baseline SpO(2) values < 97% were uncommon in these children, as were intermittent desaturations to