NCT04933773

SpO2 Measurement Depending on Different Pulse Oximeter Averaging Time Settings

• Status: Completed
• Phase: N/A
• Study type: Interventional
• Enrollment: 17 (actual)
• Sponsor: Czech Technical University in Prague · Academic / Other
• Sex: All
• Age: 18 Years – 30 Years
• Healthy volunteers: Accepted

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.

Conditions

• Movement Artifacts During SpO2 Measurements
• Reduced Perfusion During SpO2 Measurements

Interventions

Type	Name	Description
OTHER	Movement artifact - knocking	60 seconds motion artifact simulation - knocking with sensors
OTHER	Movement artifact - tremor	60 seconds motion artifact simulation - tremor with sensors
OTHER	Artifact - ambient light	60 seconds artifact simulation - ambient light using sensor opening
OTHER	Artifact - low perfusion	60 seconds artifact simulation - reduced perfusion using a cuff
OTHER	SpO2 measurement	Two SpO2 measuring devices are active simultaneously on one hand during measurement.

Timeline

• Start date: 2021-05-15
• Primary completion: 2021-10-15
• Completion: 2021-10-15
• First posted: 2021-06-22
• Last updated: 2022-01-28

Locations

1 site across 1 country: Czechia