ArticleDigital health
Commercial smartwatch with pulse oximeter detects short-time hypoxemia as well as standard medical-grade device: Validation study.
Article in Digital health. The graph could read no effect estimate from its abstract, so it casts no vote on the map. It is linked to 3 registered trials, which are not on this map. Cited by 23 papers, 1 of them a synthesis that pooled it.
What it found
Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.
The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
The trial behind it
Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.
Evaluation of SpO2 Measurement Using a Smartwatch
SpO2 Comparison Between Commercial Smartwatch and Medical-grade Pulse Oximeter
Comparison of SpO2 Measurement Accuracy of Different Types of Smartwatches
Who cites it
23 citing papers in PubMed, 1 synthesis or guideline pooled it.
- The Role of Smartwatch Technology in the Provision of Care for Type 1 or 2 Diabetes Mellitus or Gestational Diabetes: Systematic Review.JMIR mHealth and uHealth · 2024Pooled it
- Trial
- The Representation of Different Populations in Studies Assessing the Validity of Consumer Wearable Photoplethysmography-Based Measurements: Scoping Review.JMIR mHealth and uHealth · 2026Article
- Performance of Wearable Pulse Oximetry During Controlled Hypoxia Induction: Instrument Validation Study.JMIR formative research · 2026Article
- The accuracy of Apple Watch measurements: a living systematic review and meta-analysis.NPJ digital medicine · 2026Article
- Accuracy of wearable smartwatch for measuring blood pressure and oxygen saturation across a wide altitudinal gradient: a comparative study in Migrant and Resident populations.Frontiers in physiology · 2026Article
- Smartwatch Detection of Refractory Hypoxemia in Phenazopyridine-Induced Methemoglobinemia: A Case Report.Journal of medical toxicology : official journal of the American College of Medical Toxicology · 2025Article
- Accuracy of smartwatches for measuring heart rate and oxygen saturation in cynomolgus macaques compared to clinical standards.Laboratory animals · 2025Article
- The use of Apple smartwatches to obtain vital signs readings in surgical patients.Scientific reports · 2025Article
- Wearables in Chronomedicine and Interpretation of Circadian Health.Diagnostics (Basel, Switzerland) · 2025Review
- Monte Carlo Simulation of the Effect of Melanin Concentration on Light-Tissue Interactions in Reflectance Pulse Oximetry.Sensors (Basel, Switzerland) · 2025Article
- Are Smart Watches Really Smart? Comparison of Blood Oxygen Saturation Values Measured by Smart Watch, Pulse Oximetry and Arterial Blood Gases in Patients with Chronic Obstructive Pulmonary Diseases.International journal of chronic obstructive pulmonary disease · 2025Article
- Transforming in-clinic post-operative and intermediate care with cosinuss°.Computational and structural biotechnology journal · 2024Article
- Testing a Consumer Wearables Program to Promote the Use of Positive Airway Pressure Therapy in Patients With Obstructive Sleep Apnea: Protocol for a Pilot Randomized Controlled Trial.JMIR research protocols · 2024Article
- Accuracy of Smartwatch Pulse Oximetry Measurements in Hospitalized Patients With Coronavirus Disease 2019.Mayo Clinic proceedings. Digital health · 2024Article
- Evaluation of Leading Smartwatches for the Detection of Hypoxemia: Comparison to Reference Oximeter.Sensors (Basel, Switzerland) · 2023Article
- The Apple Watch spONPJ digital medicine · 2023Article
- Accuracy of the Apple Watch Oxygen Saturation Measurement in Adults: A Systematic Review.Cureus · 2023Review
- Improving the management of patients with chronic cardiac and respiratory diseases by extending pulse-oximeter uses: the dynamic pulse-oximetry.Multidisciplinary respiratory medicine · 2023Article
- Long-term accuracy and stability of blood pressure measurements from a smartwatch: Prospective validation study.Digital healthArticle
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
5 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Objective: We investigated how a commercially available smartwatch that measures peripheral blood oxygen saturation (SpO Methods: We recruited 24 healthy participants. Each participant wore a smartwatch (Apple Watch Series 6) on the left wrist and a pulse oximeter sensor (Masimo Radical-7) on the left middle finger. The participants breathed via a breathing circuit with a three-way non-rebreathing valve in three phases. First, in the 2-minute initial stabilization phase, the participants inhaled the ambient air. Then in the 5-minute desaturation phase, the participants breathed the oxygen-reduced gas mixture (12% O Results: There were 642 individual pairs of SpO Conclusions: Apple Watch Series 6 can reliably detect states of reduced blood oxygen saturation with SpO Trial Registration: ClinicalTrials.gov NCT04780724.
Indexed as
Identifiers
What OpenQuestion holds
Registered trials
Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.