An interventional study of Movement artifact - knocking and Movement artifact - tremor in Movement Artifacts During SpO2 Measurements and Reduced Perfusion During SpO2 Measurements, sponsored by Czech Technical University in Prague. Completed at 1 site in Czechia. Open to participants aged 18 Years to 30 Years, including healthy volunteers. Per ClinicalTrials.gov, last updated 2022-01-28.
Sponsored by Czech Technical University in Prague · Not applicable, Interventional, and Other
The aim of this study is to characterize the noise in the SpO2 signal depending on different pulse oximeter averaging time settings.
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.
Czech Technical University in Prague is the lead sponsor of 36 studies on the registry; 6 are open to participants now.
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SpO2 is measured by two pulse oximeters on one participant's hand (on the index finger and middle finger). One pulse oximeter is set to an averaging time of 2-4 seconds, the second pulse oximeter is set to an averaging time of 8 seconds.
Other: Movement artifact - knocking · Other: Movement artifact - tremor · Other: Artifact - ambient light · Other: Artifact - low perfusion · Other: SpO2 measurement
SpO2 is measured by two pulse oximeters on one participant's hand (on the index finger and middle finger). One pulse oximeter is set to an averaging time of 8 seconds, the second pulse oximeter is set to an averaging time of 16 seconds.
Other: Movement artifact - knocking · Other: Movement artifact - tremor · Other: Artifact - ambient light · Other: Artifact - low perfusion · Other: SpO2 measurement
60 seconds motion artifact simulation - knocking with sensors
60 seconds motion artifact simulation - tremor with sensors
60 seconds artifact simulation - ambient light using sensor opening
60 seconds artifact simulation - reduced perfusion using a cuff
Two SpO2 measuring devices are active simultaneously on one hand during measurement.
SpO2 readings with different averaging times
Differences in the SpO2 signal during artifacts depending on the set averaging time.
Time frame: 30 minutes
Plan to share: No
No publications or documents are linked to this record.
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Czech Technical University in Prague