Detection of the third heart sound using a tailored wavelet approach: Method verification
2005 (English)In: Medical and Biological Engineering and Computing, ISSN 0140-0118, E-ISSN 1741-0444, Vol. 43, no 2, 212-217 p.Article in journal (Refereed) Published
Heart sounds can be considered as mechanical fingerprints of myocardial function. The third heart sound normally occurs in children but disappears with maturation. The sound can also appear in patients with heart failure. The sound is characterised by its low-amplitude and low-frequency content, which makes it difficult to identify by the traditional use of the stethoscope. A wavelet-based method has recently been developed for detection of the third heart sound. This study investigated if the third heart sound could be identified in patients with heart failure using this detection method. The method was also compared with auscultation using conventional phonocardiography and with characterisation of the patients with echocardiography. In the first study, 87% of the third heart sounds were detected using the wavelet method, 12% were missed, and 6% were false positive. In study 2, the wavelet-detection method identified 87% of the patients using the third heart sound, and regular phonocardiography identified two (25%) of the subjects. © IFMBE: 2005.
Place, publisher, year, edition, pages
2005. Vol. 43, no 2, 212-217 p.
National CategoryMedical and Health Sciences
IdentifiersURN: urn:nbn:se:liu:diva-28715DOI: 10.1007/BF02345957Local ID: 13884OAI: oai:DiVA.org:liu-28715DiVA: diva2:249526