DocumentCode :
2412982
Title :
Analysis of RR intervals time series of congestive heart failure patients with Higuchi´s fractal dimension
Author :
Diosdado, A. Muñoz ; Coyt, G. Gálvez ; Uribe, B. M Pérez ; González, J. Arellanes
Author_Institution :
Dept. of Math., Inst. Politec. Nac., Mexico City, Mexico
fYear :
2009
fDate :
3-6 Sept. 2009
Firstpage :
3453
Lastpage :
3456
Abstract :
We study time series of RR intervals of subjects with normal sinus rhythm (NSR) during sleep and wake phases and we also analyze time series of subjects with congestive heart failure (CHF) in both phases with the method of Higuchi´s fractal dimension. We have found the presence of oscillations in the plots we have used to evaluate the Higuchi´s fractal dimension; these oscillations seem to be associated with the appearance of periodicities in the time series of CHF patients in the sleep phase. These periodicities do not appear in all the six hours of the sleep phase, so this regular behavior is not observed in all sleep stages. It could be possible that patients that always show these periodicities are in worst condition, and it is possible that the disease worsens when periodicities appear in the Higuchi´s graph.
Keywords :
electrocardiography; fractals; graph theory; medical signal processing; sleep; time series; Higuchi´s fractal dimension; Higuchi´s graph; RR intervals time series analysis; congestive heart failure patients; normal sinus rhythm; sleep phases; wake phases; Adult; Aged; Algorithms; Female; Fractals; Heart Failure; Humans; Male; Middle Aged; Oscillometry; Regression Analysis; Signal Processing, Computer-Assisted; Sleep; Sleep Stages; Time Factors;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Engineering in Medicine and Biology Society, 2009. EMBC 2009. Annual International Conference of the IEEE
Conference_Location :
Minneapolis, MN
ISSN :
1557-170X
Print_ISBN :
978-1-4244-3296-7
Electronic_ISBN :
1557-170X
Type :
conf
DOI :
10.1109/IEMBS.2009.5334596
Filename :
5334596
Link To Document :
بازگشت