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Enhancing the deceleration capacity index of heart rate by modified-phase-rectified signal averaging.
MedLine Citation:
PMID:  20213489     Owner:  NLM     Status:  In-Process    
Abstract/OtherAbstract:
Deceleration capacity (DC) of heart rate is a novel indicator of autonomic nervous system (ANS) activity. In this paper, we proposed a modified DC index based on improved phase-rectified signal averaging (PRSA) algorithm. Sinusoidal analysis is applied to elucidate the rationality of the improved PRSA. Then the validity of the modified DC is verified by the databases of chronic heart failure (CHF) patients and control group. Both the conventional and modified DCs are significantly lower in CHF patients than that in the control group (2.12 +/- 2.98 vs. 6.34 +/- 1.92 ms, P < 0.0001 and 5.45 +/- 2.48 vs. 10.64 +/- 1.76 ms, P < 0.0001, respectively). And the modified DC provides higher accuracy in distinguishing CHF than the conventional one (87.4 vs. 82.1%). The results indicate that the suggested technique enhances the performance of PRSA and improves the efficiency of DC in assessing ANS activity in CHF patients.
Authors:
Qing Pan; Yuexian Gong; Shijin Gong; Qijun Hu; Zhaocai Zhang; Jing Yan; Gangmin Ning
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-03-06
Journal Detail:
Title:  Medical & biological engineering & computing     Volume:  48     ISSN:  1741-0444     ISO Abbreviation:  Med Biol Eng Comput     Publication Date:  2010 Apr 
Date Detail:
Created Date:  2010-03-18     Completed Date:  -     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  7704869     Medline TA:  Med Biol Eng Comput     Country:  United States    
Other Details:
Languages:  eng     Pagination:  399-405     Citation Subset:  IM    
Affiliation:
Department of Biomedical Engineering, Zhejiang University, Key Laboratory of Biomedical Engineering of MOE (Yuquan Campus), Hangzhou, China.
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