Document Detail


Time constants of cardiac function and their calculations.
MedLine Citation:
PMID:  21160911     Owner:  NLM     Status:  PubMed-not-MEDLINE    
Abstract/OtherAbstract:
Left ventricular diastolic time constant, Tau, is the most established index to describe left ventricular diastolic function. However, the lack of a practical method for the measurement of Tau has been an uncomfortable reality which formerly kept all but a few researchers from making use of it. Recently, the non invasive calculation of Tau in an echo lab was accomplished through formulas developed by universal mathematical method. Tau was first suggested by the fact that left ventricular diastole is an active process, and we can therefore predict that there must be some other time constants which can be used to describe other active movement of ventricular muscles during isovolumic period. Similar mathematical manipulation was employed to develop formulas for "the other Tau(s)". Such Tau(s) represent new sets of indexes useful for the description of cardiac function. They are expected to be the most established indices given the fact Tau is revealing the power of ventricular muscles without interference from either preload or afterload.
Authors:
Xufang Bai; Quan Wang
Publication Detail:
Type:  Journal Article     Date:  2010-08-09
Journal Detail:
Title:  The open cardiovascular medicine journal     Volume:  4     ISSN:  1874-1924     ISO Abbreviation:  Open Cardiovasc Med J     Publication Date:  2010  
Date Detail:
Created Date:  2010-12-16     Completed Date:  2011-07-14     Revised Date:  2013-05-29    
Medline Journal Info:
Nlm Unique ID:  101480504     Medline TA:  Open Cardiovasc Med J     Country:  Netherlands    
Other Details:
Languages:  eng     Pagination:  168-72     Citation Subset:  -    
Affiliation:
University of Ottawa Heart Institute, Ottawa, ON, Canada.
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