Measurement Location Influences Reflectance Pulse Oximetry During Sleep
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Author
Braun, Fabian
Bonnier, Guillaume
Theurillat, Patrick
Proença, Martin
Proust, Yara-Maria
Baty, Florent
Boesch, Maximillian
Annaheim, Simon
Brutsche, Martin
Ferrario, Damien
DOI
Abstract
Peripheral oxygen saturation (SpO2) plays a key role in diagnosing sleep apnea (SA). SpO2 is mainly measured via transmission pulse oximetry at the fingertip, an approach poorly suited for long-term monitoring over several nights. In view of a more patient-friendly solution, we evaluated the accuracy of a proprietary watch-like device that measures SpO2 via reflectance pulse oximetry in a cohort of 9 patients with suspected SA. Two measurement locations were investigated: the upper arm and the wrist. The upper arm provided more robust and accurate SpO2 estimates than the wrist. These findings suggest that the upper-arm location is optimal for an unobtrusive and long-term SA detector using reflectance pulse oximetry.
Publication Reference
CSEM Scientific and Technical Report 2021, p. 38
Year
2021