Hypoxia, Pulse Oximetry
Conditions
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).
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.
Interventions
OTHERBreathing 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.
Sponsors
Czech Technical University in Prague
Study design
Allocation
NA
Intervention model
SINGLE_GROUP
Primary purpose
BASIC_SCIENCE
Masking
NONE
Intervention model description
Interventional prospective study
Eligibility
Sex/Gender
ALL
Age
18 Years to 60 Years
Healthy volunteers
Yes
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
* pregnancy * severe cardiovascular conditions * severe asthma or other severe respiratory conditions * injury to the upper limbs or hands that could affect the peripheral perfusion * diabetes * hypotension or hypertension
Design outcomes
Primary
| Measure | Time frame | Description |
|---|---|---|
| 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. |
Countries
Czechia
Outcome results
None listed