Resumo

CASTELLANOS, César G; MARIN, Diana M; CERQUERA, Edwin A  e  DELGADO T, Edilson. Computarized analysis of phonographic registers for the detection of heart murmurs. Rev. Col. Cardiol. [online]. 2006, vol.13, n.3, pp.171-179. ISSN 0120-5633.

The aim of this work is to present some arguments that during the last years have generated interest in the development of digital phonocardiography research, for supporting the diagnosis of heart murmurs. In addition, a methodology for the detection of heart murmurs caused by valvulopathies by means of computerized phonographic register analysis is exposed, using specifically acoustic algorhythms analysis and non-linear dynamic techniques. The separation between normal (heart sounds) and pathologic (murmurs) is compared through the measurements obtained by the already mentioned techniques and making the detection by means of a classifying algorhythm both in conditions where these acoustic perturbations are diminished as in those where these kind of perturbations remain.

Palavras-chave : digital phonocardiography; heart murmurs; biomedical signal processing; acoustic analysis; non-linear dynamic techniques; system training.

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