Document Detail

Application of threshold-based acceleration change index (TACI) in heart rate variability analysis.
MedLine Citation:
PMID:  16088059     Owner:  NLM     Status:  MEDLINE    
Heart rate variability (HRV) analysis is a non-invasive and reliable means to assess an autonomic nervous system (ANS) function. Heart rate is a non-stationary signal that may contain indicators of current diseases and sometimes warnings about impending diseases. In this paper, we have proposed the threshold-based acceleration change index (TACI) for HRV analysis, which is calculated from the sign of differences of RR time series characterizing the dynamics of threshold crossings. It was found that TACI is robust in classifying various groups under different physiological and pathological conditions. We have studied the behavior of TACI for simulated time series (uncorrelated random data, sinusoidal time series and logistics map time series) and its robustness in the presence of artifacts for RR time series. The performance of TACI is evaluated for classifying normal sinus rhythm (NSR), congestive heart failure (CHF) and atrial fibrillation (AF). An unpaired Student's t-test was used to check significant differences between these groups and the degree of separation between these groups was quantified by using the area of a receiver operator curve.
M Arif; W Aziz
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2005-06-13
Journal Detail:
Title:  Physiological measurement     Volume:  26     ISSN:  0967-3334     ISO Abbreviation:  Physiol Meas     Publication Date:  2005 Oct 
Date Detail:
Created Date:  2005-08-09     Completed Date:  2005-11-10     Revised Date:  2007-11-15    
Medline Journal Info:
Nlm Unique ID:  9306921     Medline TA:  Physiol Meas     Country:  England    
Other Details:
Languages:  eng     Pagination:  653-65     Citation Subset:  IM    
Department of Computer & Information Sciences, Pakistan Institute of Engineering and Applied Sciences (PIEAS), Nilore, Islamabad.
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MeSH Terms
Atrial Fibrillation / physiopathology
Heart Failure / physiopathology
Heart Rate*

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

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