HYPOWATCH: SpO2 Comparison Between Commercial Smartwatch and Medical-grade Pulse Oximeter During Hypoxia
Study Details
Study Description
Brief Summary
The aim of the project is to experimentally compare SpO2 measured on a wrist by commercial Smartwach and on a finger measured by a medical-grade pulse oximeter in healthy humans during gradual desaturation in the range of 60-100% SpO2 and simultaneously during a step change from the hypoxic phase to the recovery phase (return to physiological values).
Condition or Disease | Intervention/Treatment | Phase |
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N/A |
Detailed Description
The newest models of smartwatches measure peripheral blood oxygen saturation (SpO2) and the technology is rapidly improving. The results of individual studies on the accuracy of SpO2 measurement using smartwatches from different brands are still inconclusive. The study aims to compare the measurement of peripheral blood oxygen saturation using the latest smartwatch with a medical-grade pulse oximeter under the condition of normobaric hypoxia. SpO2 measurements will be taken by hand from the watch and the pulse oximeter simultaneously. The agreement of the measurements of both devices will be evaluated.
Study Design
Arms and Interventions
Arm | Intervention/Treatment |
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Experimental: Hypoxia Volunteers sequentially inhale three hypoxic gas mixtures each for 2.5 minute. Every measurement will begin with a two-minute stabilization phase, during which the physiological values of the volunteer will be checked. During the whole experiment, non-invasive SpO2 measurements will be performed on the middle finger and on the wrist of left hand. |
Other: Breathing mixtures of O2 and N2 and monitoring SpO2 on finger and left wrist
Volunteers sequentially inhale three hypoxic gas mixtures each for 2.5 minute. Every measurement will begin with a two-minute stabilization phase, during which the physiological values of the volunteer will be checked. During the whole experiment, non-invasive SpO2 measurements will be performed on the middle finger and on the wrist of left hand.
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Outcome Measures
Primary Outcome Measures
- Is there any difference in measured SpO2 between finger and wrist during induced hypoxia? [1 hour]
The agreement of SpO2 measurements of both monitoring devices will be evaluated.
Eligibility Criteria
Criteria
Inclusion Criteria:
- Passing the initial examination, which will determine the following data: finger circumference, heart rate, blood pressure, blood oxygen saturation and medical history
Exclusion Criteria:
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pregnancy
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severe cardiovascular conditions
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severe asthma or other severe respiratory conditions
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injury to the upper limbs or hands that could affect the peripheral perfusion
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diabetes
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hypotension or hypertension
Contacts and Locations
Locations
Site | City | State | Country | Postal Code | |
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1 | Czech Technical University in Prague | Kladno | Czechia | 27201 |
Sponsors and Collaborators
- Czech Technical University in Prague
Investigators
- Principal Investigator: Simon Walzel, MSc., Czech Technical University
Study Documents (Full-Text)
None provided.More Information
Publications
- NVT02/2022