Dependence of SpO2 signal noise on the pulse oximeter averaging time
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F68407700%3A21460%2F21%3A00353943" target="_blank" >RIV/68407700:21460/21:00353943 - isvavai.cz</a>
Result on the web
<a href="https://doi.org/10.1515/cdbme-2021-2089" target="_blank" >https://doi.org/10.1515/cdbme-2021-2089</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1515/cdbme-2021-2089" target="_blank" >10.1515/cdbme-2021-2089</a>
Alternative languages
Result language
angličtina
Original language name
Dependence of SpO2 signal noise on the pulse oximeter averaging time
Original language description
A model of the pulse oximeter, which consists of a transfer function between arterial and peripheral blood oxygen saturation (SpO2) and the noise typical for SpO2 records, is an important part of a mathematical model of oxygenation in neonates that is designed to test and compare different algorithms of oxygen control. The noise level in the SpO2 signal is affected by the averaging time setting of the pulse oximeter. This study aimed to characterize the noise level in the SpO2 signal at the set pulse oximeter averaging times of 2- 4, 8, and 16 seconds. We evaluated SpO2 records of 17 healthy volunteers who underwent a laboratory experiment in which they evoked different types of artifacts. The noise level in the SpO2 signal was characterized by two parameters, the deviation of SpO2 from the true value and the SpO2 time stability, defined as the interval during which the measured SpO2 value remained unchanged. Statistical properties of the noise level for the three averaging times were represented by normalized histograms of both the parameters and varied according to the type of artifact. With motion artifacts, the SpO2 readings deviated from the true value by more than ±2% SpO2 in 10%, 7%, or 5% of the measurements when the set averaging time was 2-4 s, 8 s, or 16 s. The length of the interval over which the SpO2 value remained unchanged was most frequently 2 seconds for all set averaging times. Implementation of the noise characteristics into the computer model of oxygenation in neonates will allow more faithful simulations of the output SpO2 signal that better match clinical observations.
Czech name
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Czech description
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Classification
Type
J<sub>SC</sub> - Article in a specialist periodical, which is included in the SCOPUS database
CEP classification
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OECD FORD branch
20601 - Medical engineering
Result continuities
Project
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Continuities
S - Specificky vyzkum na vysokych skolach
Others
Publication year
2021
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Current Directions in Biomedical Engineering
ISSN
2364-5504
e-ISSN
2364-5504
Volume of the periodical
7
Issue of the periodical within the volume
2
Country of publishing house
DE - GERMANY
Number of pages
4
Pages from-to
351-354
UT code for WoS article
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EID of the result in the Scopus database
2-s2.0-85121915022