| Circadian variations of short-term heart period irreversibility in healthy and chronic heart failure patients. | |
| | |
MedLine Citation:
|
PMID: 19163114 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
We exploited time irreversibility analysis to characterize short heart period sequences (256 samples) derived from 24h Holter recordings in normal healthy (NO) subjects and chronic heart failure (CHF) patients. We found a significant presence of irreversible dynamics over short time scales, whereas over dominant, longer time scales irreversibility was marginal. Over short time scales in NO subjects the percentage of irreversible dynamics was larger during daytime than during nighttime, thus indicating a larger presence of non linear dynamics during daytime. Same circadian variation was detected in CHF patients but the percentage of irreversible series was higher. In NO subjects during daytime the non linear behavior was mostly the result of bradycardic runs shorter than tachycardic ones. In CHF population this pattern was as present as the reverse pattern (i.e. tachycardic runs shorter than bradycardic ones). Time irreversibility analysis provides useful and reliable indexes even in uncontrolled experimental conditions and during daily activities. |
| | |
Authors:
|
Alberto Porta; Gianni D'Addio; Graziamaria Corbi; Roberto Maestri; Gian D Pinna |
Related Documents
:
|
9731694 - Maximal and submaximal exercise testing in heart failure. 2943144 - Endocrinology of cardiac failure. pathophysiologic aspects--hemodynamics. 19154844 - Safety, acceptance, and physiologic effects of sauna bathing in people with chronic hea... 10509674 - Enhanced secretory group ii pla2 activity in the tears of chronic blepharitis patients. 16162994 - Aerobic and lung performance in premature children with and without chronic lung diseas... 15768724 - Exercise in the cold. |
Publication Detail:
|
Type: Journal Article |
Journal Detail:
|
Title: Conference proceedings : ... Annual International Conference of the IEEE Engineering in Medicine and Biology Society. IEEE Engineering in Medicine and Biology Society. Conference Volume: 2008 ISSN: 1557-170X ISO Abbreviation: Conf Proc IEEE Eng Med Biol Soc Publication Date: 2008 |
Date Detail:
|
Created Date: 2009-02-16 Completed Date: 2009-04-22 Revised Date: - |
Medline Journal Info:
|
Nlm Unique ID: 101243413 Medline TA: Conf Proc IEEE Eng Med Biol Soc Country: United States |
Other Details:
|
Languages: eng Pagination: 2116-9 Citation Subset: IM |
Affiliation:
|
Department of Technologies for Health, Galeazzi Orthopaedic Institute, University of Milan, via R. Galeazzi 4, 20161, Italy. alberto.porta@unimi.it |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Adult Bradycardia / physiopathology Chronic Disease Circadian Rhythm* Electrocardiography, Ambulatory / methods Heart Failure / physiopathology* Heart Rate Humans Middle Aged Models, Cardiovascular* Nonlinear Dynamics Time Factors |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: Rényi entropy and Lempel-Ziv complexity of mechanomyographic recordings of diaphragm muscle as inde...
Next Document: Investigating parameters participating in the infant respiratory control system attractor.