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Sound differences between electronic and acoustic stethoscopes

BACKGROUND: The area of application of electronic stethoscopes in medical diagnostics covers the scope of usability of the acoustic stethoscopes, from which they have evolved and which they could potentially replace. However, the principle of operation of these two groups of diagnostic devices is su...

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Autores principales: Nowak, Lukasz J., Nowak, Karolina M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: BioMed Central 2018
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6076413/
https://www.ncbi.nlm.nih.gov/pubmed/30075781
http://dx.doi.org/10.1186/s12938-018-0540-2
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author Nowak, Lukasz J.
Nowak, Karolina M.
author_facet Nowak, Lukasz J.
Nowak, Karolina M.
author_sort Nowak, Lukasz J.
collection PubMed
description BACKGROUND: The area of application of electronic stethoscopes in medical diagnostics covers the scope of usability of the acoustic stethoscopes, from which they have evolved and which they could potentially replace. However, the principle of operation of these two groups of diagnostic devices is substantially different. Thus, an important question arises, regarding the differences in parameters of the transmitted sound and their potential diagnostic consequences in clinical practice. METHODS: In order to answer this question, heart auscultation signals are recorded using various stethoscopes and divided into short fragments based on the analysis of the synchronized recordings of electrocardiogram signals. Next, a dedicated algorithm is used to extract representative datasets for each case, which are then analyzed for their acoustic parameters. Four different electronic stethoscopes were investigated, together with an acoustic stethoscope as a reference point. RESULTS: The determined acoustic characteristics of the considered stethoscopes differ significantly between each other. CONCLUSIONS: The differences in sound transmitted by various stethoscope models may translate into significant differences in quality of the obtained diagnosis. It is also pointed out, that the terminology and application guidelines regarding the electronic stethoscopes are misleading and should be changed.
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spelling pubmed-60764132018-08-07 Sound differences between electronic and acoustic stethoscopes Nowak, Lukasz J. Nowak, Karolina M. Biomed Eng Online Research BACKGROUND: The area of application of electronic stethoscopes in medical diagnostics covers the scope of usability of the acoustic stethoscopes, from which they have evolved and which they could potentially replace. However, the principle of operation of these two groups of diagnostic devices is substantially different. Thus, an important question arises, regarding the differences in parameters of the transmitted sound and their potential diagnostic consequences in clinical practice. METHODS: In order to answer this question, heart auscultation signals are recorded using various stethoscopes and divided into short fragments based on the analysis of the synchronized recordings of electrocardiogram signals. Next, a dedicated algorithm is used to extract representative datasets for each case, which are then analyzed for their acoustic parameters. Four different electronic stethoscopes were investigated, together with an acoustic stethoscope as a reference point. RESULTS: The determined acoustic characteristics of the considered stethoscopes differ significantly between each other. CONCLUSIONS: The differences in sound transmitted by various stethoscope models may translate into significant differences in quality of the obtained diagnosis. It is also pointed out, that the terminology and application guidelines regarding the electronic stethoscopes are misleading and should be changed. BioMed Central 2018-08-03 /pmc/articles/PMC6076413/ /pubmed/30075781 http://dx.doi.org/10.1186/s12938-018-0540-2 Text en © The Author(s) 2018 Open AccessThis article is distributed under the terms of the Creative Commons Attribution 4.0 International License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted use, distribution, and reproduction in any medium, provided you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons license, and indicate if changes were made. The Creative Commons Public Domain Dedication waiver (http://creativecommons.org/publicdomain/zero/1.0/) applies to the data made available in this article, unless otherwise stated.
spellingShingle Research
Nowak, Lukasz J.
Nowak, Karolina M.
Sound differences between electronic and acoustic stethoscopes
title Sound differences between electronic and acoustic stethoscopes
title_full Sound differences between electronic and acoustic stethoscopes
title_fullStr Sound differences between electronic and acoustic stethoscopes
title_full_unstemmed Sound differences between electronic and acoustic stethoscopes
title_short Sound differences between electronic and acoustic stethoscopes
title_sort sound differences between electronic and acoustic stethoscopes
topic Research
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6076413/
https://www.ncbi.nlm.nih.gov/pubmed/30075781
http://dx.doi.org/10.1186/s12938-018-0540-2
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