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ABSTRACT: Objective
Pulse oximetry is used extensively in hospital and home settings to measure arterial oxygen saturation (SpO2). Interpretation of the trend and range of SpO2 values observed in infants is currently limited by a lack of reference ranges using current devices, and may be augmented by development of cumulative frequency (CF) reference-curves. This study aims to provide reference oxygen saturation values from a prospective longitudinal cohort of healthy infants.Design
Prospective longitudinal cohort study.Setting
Sleep-laboratory.Patients
34 healthy term infants were enrolled, and studied at 2?weeks, 3, 6, 12 and 24?months of age (N=30, 25, 27, 26, 20, respectively).Interventions
Full overnight polysomnography, including 2?s averaging pulse oximetry (Masimo Radical).Main outcome measurements
Summary SpO2 statistics (mean, median, 5th and 10th percentiles) and SpO2 CF plots were calculated for each recording. CF reference-curves were then generated for each study age. Analyses were repeated with sleep-state stratifications and inclusion of manual artefact removal.Results
Median nocturnal SpO2 values ranged between 98% and 99% over the first 2?years of life and the CF reference-curves shift right by 1% between 2?weeks and 3?months. CF reference-curves did not change with manual artefact removal during sleep and did not vary between rapid eye movement (REM) and non-REM sleep. Manual artefact removal did significantly change summary statistics and CF reference-curves during wake.Conclusions
SpO2 CF curves provide an intuitive visual tool for evaluating whether an individual's nocturnal SpO2 distribution falls within the range of healthy age-matched infants, thereby complementing summary statistics in the interpretation of extended oximetry recordings in infants.
SUBMITTER: Terrill PI
PROVIDER: S-EPMC4283696 | biostudies-literature | 2015 Jan
REPOSITORIES: biostudies-literature
Terrill Philip Ian PI Dakin Carolyn C Hughes Ian I Yuill Maggie M Parsley Chloe C
Archives of disease in childhood 20140725 1
<h4>Objective</h4>Pulse oximetry is used extensively in hospital and home settings to measure arterial oxygen saturation (SpO2). Interpretation of the trend and range of SpO2 values observed in infants is currently limited by a lack of reference ranges using current devices, and may be augmented by development of cumulative frequency (CF) reference-curves. This study aims to provide reference oxygen saturation values from a prospective longitudinal cohort of healthy infants.<h4>Design</h4>Prospe ...[more]