Abstract：
: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.
journal_name
Med Biol Eng Computjournal_title
Medical & biological engineering & computingauthors
Hult P,Fjällbrant T,Hildén K,Dahlström U,Wranne B,Ask Pdoi
10.1007/BF02345957keywords:
subject
Has Abstractpub_date
2005-03-01 00:00:00pages
212-7issue
2eissn
0140-0118issn
1741-0444journal_volume
43pub_type
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