The Apple Watch spO2 sensor and outliers in healthy users

Abstract It is unclear how frequently the Apple Watch produces spO2 measurements outside of the normal range in healthy individuals at rest. We conducted a head-to-head comparison in 38 healthy individuals between two watches and two medical-grade pulse oximeters. Fourteen percent of watch measureme...

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Main Authors: Christina Schröder, Robert Förster, Daniel R. Zwahlen, Paul Windisch
Format: Article
Language:English
Published: Nature Portfolio 2023-04-01
Series:npj Digital Medicine
Online Access:https://doi.org/10.1038/s41746-023-00814-x
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author Christina Schröder
Robert Förster
Daniel R. Zwahlen
Paul Windisch
author_facet Christina Schröder
Robert Förster
Daniel R. Zwahlen
Paul Windisch
author_sort Christina Schröder
collection DOAJ
description Abstract It is unclear how frequently the Apple Watch produces spO2 measurements outside of the normal range in healthy individuals at rest. We conducted a head-to-head comparison in 38 healthy individuals between two watches and two medical-grade pulse oximeters. Fourteen percent of watch measurements yielded spO2 values below 95%, with no values below 92%. Results suggest that outliers measured by the watch should not be a cause for concern in otherwise healthy individuals.
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spelling doaj.art-5eb9646639a64cd5a2ad3629668050712023-12-03T09:14:38ZengNature Portfolionpj Digital Medicine2398-63522023-04-01611310.1038/s41746-023-00814-xThe Apple Watch spO2 sensor and outliers in healthy usersChristina Schröder0Robert Förster1Daniel R. Zwahlen2Paul Windisch3Department of Radiation Oncology, Kantonsspital WinterthurDepartment of Radiation Oncology, Kantonsspital WinterthurDepartment of Radiation Oncology, Kantonsspital WinterthurDepartment of Radiation Oncology, Kantonsspital WinterthurAbstract It is unclear how frequently the Apple Watch produces spO2 measurements outside of the normal range in healthy individuals at rest. We conducted a head-to-head comparison in 38 healthy individuals between two watches and two medical-grade pulse oximeters. Fourteen percent of watch measurements yielded spO2 values below 95%, with no values below 92%. Results suggest that outliers measured by the watch should not be a cause for concern in otherwise healthy individuals.https://doi.org/10.1038/s41746-023-00814-x
spellingShingle Christina Schröder
Robert Förster
Daniel R. Zwahlen
Paul Windisch
The Apple Watch spO2 sensor and outliers in healthy users
npj Digital Medicine
title The Apple Watch spO2 sensor and outliers in healthy users
title_full The Apple Watch spO2 sensor and outliers in healthy users
title_fullStr The Apple Watch spO2 sensor and outliers in healthy users
title_full_unstemmed The Apple Watch spO2 sensor and outliers in healthy users
title_short The Apple Watch spO2 sensor and outliers in healthy users
title_sort apple watch spo2 sensor and outliers in healthy users
url https://doi.org/10.1038/s41746-023-00814-x
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