| A new index for the analysis of heart rate variability dynamics: characterization and application. | |
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MedLine Citation:
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PMID: 14658775 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
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A new index for the analysis of the heart rate variability (HRV) dynamics is presented. The proposed index (acceleration change index (ACI)) characterizes the sign of the differences of a time series. A theoretical study shows an expression that relates ACI and the autocorrelation function of the time series. This formula is tested and validated with different simulated time series (uncorrelated noise, sinusoidal and fractional Brownian motion). Next, ACI is applied to RR time series from healthy subjects showing that ACI decreases with periodic controlled breathing, increases during exercise, and it has a lower value at night than during the day. In a preliminary study, ACI has been shown to be lower in healthy subjects than in patients who had suffered a myocardial infarction one month previously. ACI can be employed as a fast and robust new marker of the HRV dynamics. |
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Authors:
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M A García-González; J Ramos-Castro; M Fernández-Chimeno |
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Publication Detail:
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Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
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Title: Physiological measurement Volume: 24 ISSN: 0967-3334 ISO Abbreviation: Physiol Meas Publication Date: 2003 Nov |
Date Detail:
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Created Date: 2003-12-08 Completed Date: 2004-07-13 Revised Date: 2006-11-15 |
Medline Journal Info:
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Nlm Unique ID: 9306921 Medline TA: Physiol Meas Country: England |
Other Details:
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Languages: eng Pagination: 819-32 Citation Subset: IM |
Affiliation:
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Instrumentation and Bioengineering Division (DIB), Department of Electronic Engineering (DEE), Universitat Politècnica de Catalunya (UPC), C/Jordi Girona 1-3, Edifici C-4, 08034 Barcelona, Spain. magarcia@eel.upc.es |
Export Citation:
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| MeSH Terms | |
Descriptor/Qualifier:
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Algorithms Circadian Rhythm / physiology Computer Simulation Data Interpretation, Statistical Heart Rate / physiology* Humans Logistic Models Myocardial Infarction / physiopathology ROC Curve |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
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