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Sökning: L773:0002 9645 > Use of signal analy...

LIBRIS Formathandbok  (Information om MARC21)
FältnamnIndikatorerMetadata
00005008naa a2200469 4500
001oai:DiVA.org:liu-18291
003SwePub
008090515s2009 | |||||||||||000 ||eng|
009oai:slubar.slu.se:27308
0247 a https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-182912 URI
0247 a https://doi.org/10.2460/ajvr.70.5.6042 DOI
0247 a https://res.slu.se/id/publ/273082 URI
040 a (SwePub)liud (SwePub)slu
041 a engb eng
042 9 SwePub
072 7a ref2 swepub-contenttype
072 7a art2 swepub-publicationtype
1001 a Ljungvall, Ingridu Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för kliniska vetenskaper (KV),Department of Clinical Sciences,Swedish University of Agriculture Science4 aut0 (Swepub:slu)48949
2451 0a Use of signal analysis of heart sounds and murmurs to assess severity of mitral valve regurgitation attributable to myxomatous mitral valve disease in dogs
264 1b American Veterinary Medical Association (AVMA),c 2009
338 a print2 rdacarrier
520 a Objective-To investigate use of signal analysis of heart sounds and murmurs in assessing severity of mitral valve regurgitation (mitral regurgitation [MR]) in dogs with myxomatous mitral valve disease (MMVD). Animals-77 client-owned dogs. Procedures-Cardiac sounds were recorded from dogs evaluated by use of auscultatory and echocardiographic classification systems. Signal analysis techniques were developed to extract 7 sound variables (first frequency peak, murmur energy ratio, murmur duration > 200 Hz, sample entropy and first minimum of the auto mutual information function of the murmurs, and energy ratios of the first heart sound [S1] and second heart sound [S2]). Results-Significant associations were detected between severity of MR and all sound variables, except the energy ratio of S1. An increase in severity of MR resulted in greater contribution of higher frequencies, increased signal irregularity, and decreased energy ratio of S2. The optimal combination of variables for distinguishing dogs with high-intensity murmurs from other dogs was energy ratio of S2 and murmur duration > 200 Hz (sensitivity, 79%; specificity, 71%) by use of the auscultatory classification. By use of the echocardiographic classification, corresponding variables were auto mutual information, first frequency peak, and energy ratio of S2 (sensitivity, 88%; specificity, 82%). Conclusions and Clinical Relevance-Most of the investigated sound variables were significantly associated with severity of MR, which indicated a powerful diagnostic potential for monitoring MMVD. Signal analysis techniques could be valuable for clinicians when performing risk assessment or determining whether special care and more extensive examinations are required.
650 7a LANTBRUKSVETENSKAPERx Husdjursvetenskap0 (SwePub)4022 hsv//swe
650 7a AGRICULTURAL SCIENCESx Animal and Dairy Sience0 (SwePub)4022 hsv//eng
650 7a LANTBRUKSVETENSKAPERx Veterinärmedicin0 (SwePub)4032 hsv//swe
650 7a AGRICULTURAL SCIENCESx Veterinary Science0 (SwePub)4032 hsv//eng
653 a TECHNOLOGY
653 a TEKNIKVETENSKAP
7001 a Ahlström, Christeru Linköpings universitet,Fysiologisk mätteknik,Tekniska högskolan4 aut0 (Swepub:liu)chrah26
7001 a Höglund, Katjau Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för anatomi, fysiologi och biokemi,Department of Anatomy, Physiology and Biochemistry (AFB),Swedish University of Agriculture Science4 aut0 (Swepub:slu)48365
7001 a Hult, Peteru Linköpings universitet,Fysiologisk mätteknik,Tekniska högskolan4 aut0 (Swepub:liu)pethu44
7001 a Kvart, Clarenceu Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för anatomi, fysiologi och biokemi,Department of Anatomy, Physiology and Biochemistry (AFB),Swedish University of Agriculture Science4 aut0 (Swepub:slu)49934
7001 a Borgarelli, Micheleu Kansas State University4 aut
7001 a Ask, Peru Linköpings universitet,Fysiologisk mätteknik,Tekniska högskolan4 aut0 (Swepub:liu)peras02
7001 a Häggström, Jensu Swedish University of Agricultural Sciences,Sveriges lantbruksuniversitet,Institutionen för kliniska vetenskaper (KV),Department of Clinical Sciences,Swedish University of Agriculture Science4 aut0 (Swepub:slu)48327
7102 a Sveriges lantbruksuniversitetb Institutionen för kliniska vetenskaper (KV)4 org
7102 a Sveriges lantbruksuniversitet
7730 t AMERICAN JOURNAL OF VETERINARY RESEARCHd : American Veterinary Medical Association (AVMA)g 70:5, s. 604-613q 70:5<604-613x 0002-9645
8564 u http://www.avma.org/journals/ajvr/ajvr_index.aspy Link to Journal
8564 8u https://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-18291
8564 8u https://doi.org/10.2460/ajvr.70.5.604
8564 8u https://res.slu.se/id/publ/27308

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