Detection of the third heart sound using a tailored wavelet approach: Method verification

Hult, Peter,1964-Linköpings universitet,Tekniska högskolan,Fysiologisk mätteknik (author)

Detection of the third heart sound using a tailored wavelet approach : Method verification

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.

Fjällbrant, Tore (author)
Hildén, Karin,1978-Linköpings universitet,Institutionen för medicin och vård,Hälsouniversitetet(Swepub:liu)karhi01 (author)
Dahlström, Ulf,1946-Östergötlands Läns Landsting,Linköpings universitet,Hälsouniversitetet,Kardiologi,Kardiologiska kliniken(Swepub:liu)ulfda85 (author)
Wranne, Bengt,1940-Östergötlands Läns Landsting,Linköpings universitet,Hälsouniversitetet,Klinisk fysiologi,Fysiologiska kliniken(Swepub:liu)benwr76 (author)
Ask, Per,1950-Linköpings universitet,Tekniska högskolan,Fysiologisk mätteknik(Swepub:liu)peras02 (author)
Linköpings universitetTekniska högskolan (creator_code:org_t)

In:Medical and Biological Engineering and Computing43:2, s. 212-2170140-01181741-0444

By the author/editor: Hult, Peter, 196 ...; Fjällbrant, Tore; Hildén, Karin, 1 ...; Dahlström, Ulf, ...; Wranne, Bengt, 1 ...; Ask, Per, 1950-

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