Variational Method of Separation of the Aortic and Pulmonary Components of the Second Heart Sound

A variational method for separating the signal of the second heart sound into aortic and pulmonary components is proposed based on minimizing the functional using model signals dependent on a number of parameters. The range of variation of these parameters was determined, and the algorithm was teste...

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Bibliographic Details
Published in:Doklady. a journal of the Russian Academy of Sciences. Physics 2020-08, Vol.65 (8), p.295-299
Main Authors: Korolkov, A. I., Andreev, V. G., Gramovich, V. V., Aleevskaya, A. M., Martynyuk, T. V., Rudenko, O. V.
Format: Article
Language:English
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Summary:A variational method for separating the signal of the second heart sound into aortic and pulmonary components is proposed based on minimizing the functional using model signals dependent on a number of parameters. The range of variation of these parameters was determined, and the algorithm was tested on model signals and on signals obtained in patients with pulmonary hypertension. An analysis of errors of the method depending on the noise level and the delay time between the components was performed. We demonstrated the efficiency of the algorithm for separating the signals measured in patients and for determining the delay time between the components. The correlation between the delay time and the pulmonary artery pressure was shown, which can serve as the basis for a new method of diagnosis of pulmonary hypertension.
ISSN:1028-3358
1562-6903
DOI:10.1134/S1028335820080042