Document Detail

Assessing systolic time-intervals from heart sound: a feasibility study.
MedLine Citation:
PMID:  19963570     Owner:  NLM     Status:  MEDLINE    
Systolic time intervals are highly correlated to fundamental cardiac functions. In this paper we investigate the feasibility of using heart sound (HS) to accurately measure the opening and closing moments of the aortic valve, since these are crucial moments to define the main systolic timings of the heart cycle, i.e. the pre-ejection period (PEP) and the left ventricular ejection time (LVET). We introduce a HS model, which is applied to define several features that provide clear markers to identify these moments in the HS. Using these features and a comparative analysis with registered echocardiographies from 17 subjects, the results achieved in this study suggest that HS can be used to accurately estimate LVET and PEP.
P Carvalho; R P Paiva; R Couceiro; J Henriques; I Quintal; J Muehlsteff; X L Aubert; M Antunes
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Annual Conference     Volume:  2009     ISSN:  1557-170X     ISO Abbreviation:  Conf Proc IEEE Eng Med Biol Soc     Publication Date:  2009  
Date Detail:
Created Date:  2009-12-07     Completed Date:  2010-03-16     Revised Date:  2014-08-21    
Medline Journal Info:
Nlm Unique ID:  101243413     Medline TA:  Conf Proc IEEE Eng Med Biol Soc     Country:  United States    
Other Details:
Languages:  eng     Pagination:  3124-8     Citation Subset:  IM    
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MeSH Terms
Aortic Valve / pathology
Biomedical Engineering / methods
Echocardiography, Doppler / methods
Feasibility Studies
Heart / physiopathology
Heart Sounds*
Models, Statistical
Myocardial Contraction

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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