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.
Study Type
INTERVENTIONAL
Allocation
RANDOMIZED
Purpose
OTHER
Masking
SINGLE
Enrollment
17
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
Faculty of Biomedical Engineering, Czech Technical University in Prague
Kladno, Czechia
SpO2 readings with different averaging times
Differences in the SpO2 signal during artifacts depending on the set averaging time.
Time frame: 30 minutes
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60 seconds artifact simulation - reduced perfusion using a cuff
Two SpO2 measuring devices are active simultaneously on one hand during measurement.