Movement Artifacts During SpO2 Measurements, Reduced Perfusion During SpO2 Measurements
Conditions
Keywords
pulse oximetry, SpO2, averaging time, motion artifacts
Brief summary
The aim of this study is to characterize the noise in the SpO2 signal depending on different pulse oximeter averaging time settings.
Detailed description
Noise in the SpO2 signal is most often caused by artifacts, such as movement artifacts, reduced perfusion, additional light and others. These artifacts can be partially removed from the SpO2 signal by different pulse oximeter settings, specifically the sensitivity mode and averaging time. It is known that when a longer averaging time is set, the measured signal contains fewer artifacts, on the other hand there is an increased risk of missing short desaturation. The aim of this work is to characterize the noise in the SpO2 signal depending on the set averaging time of the pulse oximeter based on experimental data from healthy volunteers.
Interventions
OTHERMovement artifact - knocking
60 seconds motion artifact simulation - knocking with sensors
OTHERMovement artifact - tremor
60 seconds motion artifact simulation - tremor with sensors
OTHERArtifact - ambient light
60 seconds artifact simulation - ambient light using sensor opening
OTHERArtifact - low perfusion
60 seconds artifact simulation - reduced perfusion using a cuff
OTHERSpO2 measurement
Two SpO2 measuring devices are active simultaneously on one hand during measurement.
Sponsors
Czech Technical University in Prague
Study design
Allocation
RANDOMIZED
Intervention model
CROSSOVER
Primary purpose
OTHER
Masking
SINGLE (Subject)
Intervention model description
All participants go through all study arms, in random order. Two pulse oximeters with different averaging time settings are active simultaneously during measurement on each participant and the measured signal is compared.
Eligibility
Sex/Gender
ALL
Age
18 Years to 30 Years
Healthy volunteers
Yes
Inclusion criteria
* healthy volunteers from the Czech Technical University
Exclusion criteria
* pregnancy * severe cardiovascular 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 |
|---|---|---|
| SpO2 readings with different averaging times | 30 minutes | Differences in the SpO2 signal during artifacts depending on the set averaging time. |
Countries
Czechia
Outcome results
None listed