Night to night variability of pulse oximetry features in children at home and at the hospital

Objective . Investigation of the night-to-night (NtN) variability of pulse oximetry features in
children with suspicion of Sleep Apnea. Approach . Following ethics approval and informed consent,
75 children referred to British Columbia Children's Hospital for overnight PSG were recorded on
three consecutive nights, including one at the hospital simultaneously with polysomnography and 2
nights at home. During all three nights, a smartphone-based pulse oximeter sensor was used to record
overnight pulse oximetry (SpO2 and photoplethysmogram). Features characterizing SpO2 dynamics and
heart rate were derived. The NtN variability of these features over the three different nights was
investigated using linear mixed models. Main results . Overall most pulse oximetry features (e.g.
the oxygen desaturation index) showed no NtN variability. One of the exceptions is for the signal
quality, which was significantly lower during at home measurements compared to measurements...

Source: Physiological Measurement - October 28, 2021 Category: Physiology Authors: Xenia L R Hoppenbrouwer, Aryannah U Rollinson, Dustin Dunsmuir, J Mark Ansermino, Guy Dumont, Wendy Oude Nijeweme-d ’Hollosy, Peter Veltink and Ainara Garde Source Type: research