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To define reference ranges for the 3% and 4% mean desaturation nadir in healthy children under 12 years: observational study using oximetry motion-resistant technology
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To define reference ranges for the 3% and 4% mean desaturation nadir in healthy children under 12 years: observational study using oximetry motion-resistant technology
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To define reference ranges for the 3% and 4% mean desaturation nadir in healthy children under 12 years: observational study using oximetry motion-resistant technology
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Journal Article
To define reference ranges for the 3% and 4% mean desaturation nadir in healthy children under 12 years: observational study using oximetry motion-resistant technology
2024
Overview
Correspondence to Dr Hazel J Evans, Respiratory Medicine, Southampton Children's Hospital, Southampton SO16 6YD, UK; hazel.evans@uhs.nhs.uk In 2020 we published data defining reference ranges for pulse oximetry parameters generated from oximeters which use short averaging times and contain motion rejecting algorithms in healthy children under 12 years of age.1 This paper reported the minimum saturation (SAT min), which is the lowest oxygen saturation recorded, a value that is commonly reported in the paediatric literature.1 2 This is limited by the fact that it takes into account the single most severe dip, without reflecting the pattern of desaturations occurring throughout the period of sleep. Full details of the study have been published previously1 and published oximetry indices from this cohort are provided in table 1.Table 1 Descriptive statistics for oximetry desaturation events and indices for the entire study group (n=66): number of oxygen desaturations >4% and >3% from baseline per hour (DI4 and DI3), Delta Index 12 s (DI12s) and percentage time with saturations below 92% and 90% Parameter Mean SD Mean 95% CI Median Median 95% CI 90th centile 95th centile 97.5th centile DI4 1.14 0.84 0.93 to 1.34 0.92 0.73 to 1.15 2.60 3.00 3.38 DI3 2.90 1.65 2.50 to 3.29 2.58 1.96 to 3.10 5.65 6.43 7.06 DI12s 0.35 0.09 0.33 to 0.38 0.34 0.31 to 0.38 0.48 0.53 0.57 Time <92% 0.02 0.03 0.01 to 0.03 0.00 0.00 to 0.01 0.05 0.11 0.15 Time <90% 0.005 0.015 0.002 to 0.009 0.00 0.00 to 0.00 0.01 0.05 0.07 Here we report data previously collected but not reported for MDN DI3 and DI4. Data analysis for MDN DI3 and DI4 for a total cohort of 65 children was performed using SPSS (V.28).
