Distinguishing Innocent Murmurs from Murmurs caused by Aortic Stenosis by Recurrence Quantification Analysis

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from Murmurs caused by Aortic Stenosis by Recurrence Quantification Analysis</title> <meta name="description" content="Distinguishing Innocent Murmurs from Murmurs caused by Aortic Stenosis by Recurrence Quantification Analysis"> <meta name="keywords" content="Bioacoustics, murmur, phonocardiographic signal, recurrence quantification analysis."> <meta name="viewport" content="width=device-width, initial-scale=1, minimum-scale=1, maximum-scale=1, user-scalable=no"> <meta charset="utf-8"> <meta name="citation_title" content="Distinguishing Innocent Murmurs from Murmurs caused by Aortic Stenosis by Recurrence Quantification Analysis"> <meta name="citation_author" content="Christer Ahlstrom"> <meta name="citation_author" content="Katja H枚glund"> <meta name="citation_author" content="Peter Hult"> <meta name="citation_author" content="Jens H盲ggstr枚m"> <meta name="citation_author" content="Clarence Kvart"> <meta name="citation_author" content="Per Ask"> <meta name="citation_publication_date" 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from Murmurs caused by Aortic Stenosis by Recurrence Quantification Analysis</h5> <div class="card-body"> <p class="card-text"><strong>Authors:</strong> <a href="https://publications.waset.org/search?q=Christer%20Ahlstrom">Christer Ahlstrom</a>, <a href="https://publications.waset.org/search?q=Katja%20H%C3%B6glund"> Katja H枚glund</a>, <a href="https://publications.waset.org/search?q=Peter%20Hult"> Peter Hult</a>, <a href="https://publications.waset.org/search?q=Jens%20H%C3%A4ggstr%C3%B6m"> Jens H盲ggstr枚m</a>, <a href="https://publications.waset.org/search?q=Clarence%20Kvart"> Clarence Kvart</a>, <a href="https://publications.waset.org/search?q=Per%20Ask"> Per Ask</a> </p> <p class="card-text"><strong>Abstract:</strong></p> It is sometimes difficult to differentiate between innocent murmurs and pathological murmurs during auscultation. In these difficult cases, an intelligent stethoscope with decision support abilities would be of great value. In this study, using a dog model, phonocardiographic recordings were obtained from 27 boxer dogs with various degrees of aortic stenosis (AS) severity. As a reference for severity assessment, continuous wave Doppler was used. The data were analyzed with recurrence quantification analysis (RQA) with the aim to find features able to distinguish innocent murmurs from murmurs caused by AS. Four out of eight investigated RQA features showed significant differences between innocent murmurs and pathological murmurs. Using a plain linear discriminant analysis classifier, the best pair of features (recurrence rate and entropy) resulted in a sensitivity of 90% and a specificity of 88%. In conclusion, RQA provide valid features which can be used for differentiation between innocent murmurs and murmurs caused by AS. <iframe src="https://publications.waset.org/2998.pdf" style="width:100%; height:400px;" frameborder="0"></iframe> <p class="card-text"><strong>Keywords:</strong> <a href="https://publications.waset.org/search?q=Bioacoustics" title="Bioacoustics">Bioacoustics</a>, <a href="https://publications.waset.org/search?q=murmur" title=" murmur"> murmur</a>, <a href="https://publications.waset.org/search?q=phonocardiographic%20signal" title=" phonocardiographic signal"> phonocardiographic signal</a>, <a href="https://publications.waset.org/search?q=recurrence%20quantification%20analysis." title=" recurrence quantification analysis."> recurrence quantification analysis.</a> </p> <p class="card-text"><strong>Digital Object Identifier (DOI):</strong> <a href="https://doi.org/10.5281/zenodo.1058303" target="_blank">doi.org/10.5281/zenodo.1058303</a> </p> <a href="https://publications.waset.org/2998/distinguishing-innocent-murmurs-from-murmurs-caused-by-aortic-stenosis-by-recurrence-quantification-analysis" class="btn btn-primary btn-sm">Procedia</a> <a href="https://publications.waset.org/2998/apa" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">APA</a> <a href="https://publications.waset.org/2998/bibtex" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">BibTeX</a> <a href="https://publications.waset.org/2998/chicago" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Chicago</a> <a href="https://publications.waset.org/2998/endnote" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">EndNote</a> <a href="https://publications.waset.org/2998/harvard" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">Harvard</a> <a href="https://publications.waset.org/2998/json" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">JSON</a> <a href="https://publications.waset.org/2998/mla" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">MLA</a> <a href="https://publications.waset.org/2998/ris" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">RIS</a> <a href="https://publications.waset.org/2998/xml" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">XML</a> <a href="https://publications.waset.org/2998/iso690" target="_blank" rel="nofollow" class="btn btn-primary btn-sm">ISO 690</a> <a href="https://publications.waset.org/2998.pdf" target="_blank" class="btn btn-primary btn-sm">PDF</a> <span class="bg-info text-light px-1 py-1 float-right rounded"> Downloads <span class="badge badge-light">2005</span> </span> <p class="card-text"><strong>References:</strong></p> <br>[1] A. 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Distinguishing Innocent Murmurs from Murmurs caused by Aortic Stenosis by Recurrence Quantification Analysis