Article ; Online: E-wave asymmetry elucidates diastolic ventricular stiffness-relaxation coupling: model-based prediction with in vivo validation.
American journal of physiology. Heart and circulatory physiology
2020 Volume 320, Issue 1, Page(s) H181–H189
Abstract: Load, chamber stiffness, and relaxation are the three established determinants of global diastolic function (DF). Coupling of systolic stiffness and isovolumic relaxation has been hypothesized; however, diastolic stiffness-relaxation coupling (DSRC) ... ...
Abstract | Load, chamber stiffness, and relaxation are the three established determinants of global diastolic function (DF). Coupling of systolic stiffness and isovolumic relaxation has been hypothesized; however, diastolic stiffness-relaxation coupling (DSRC) remains unknown. The parametrized diastolic filling (PDF) formalism, a validated DF model incorporates DSRC. PDF model-predicted DSRC was validated by analysis of 159 Doppler E-waves from a published data set (22 healthy volunteers undergoing bicycle exercise). E-waves at varying (46-120 bpm) heart rates (HR) demonstrated variation in acceleration time (AT), deceleration time (DT), and E-wave peak velocity. AT, DT, and E |
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MeSH term(s) | Adult ; Bicycling ; Diastole ; Echocardiography, Doppler ; Exercise ; Female ; Healthy Volunteers ; Heart Rate ; Heart Ventricles/diagnostic imaging ; Humans ; Male ; Models, Cardiovascular ; Predictive Value of Tests ; Reproducibility of Results ; Retrospective Studies ; Systole ; Time Factors ; Ventricular Function, Left ; Young Adult |
Language | English |
Publishing date | 2020-11-13 |
Publishing country | United States |
Document type | Journal Article ; Research Support, Non-U.S. Gov't ; Validation Study |
ZDB-ID | 603838-4 |
ISSN | 1522-1539 ; 0363-6135 |
ISSN (online) | 1522-1539 |
ISSN | 0363-6135 |
DOI | 10.1152/ajpheart.00650.2020 |
Database | MEDical Literature Analysis and Retrieval System OnLINE |
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