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Title:Heart rate variability and nonlinear dynamic analysis in patients with stress-induced cardiomyopathy
Authors:Krstačić, Goran (Author)
Parati, Gianfranco (Author)
Gamberger, Dragan (Author)
Castiglioni, Paolo (Author)
Krstačić, Antonija (Author)
Steiner, Robert (Author)
Files:This document has no files. This document may have a phisical copy in the library of the organization, check the status via COBISS. Link is opened in a new window
Language:English
Work type:Not categorized (r6)
Tipology:1.01 - Original Scientific Article
Organization:UNG - University of Nova Gorica
Abstract:Complexity-based analyses may quantify abnormalities in heart rate variability (HRV). The aim of this study was to investigate the clinical and prognostic significances of dynamic HRV changes in patients with stress-induced cardiomyopathy Takotsubo syndrome (TS) by means of linear and nonlinear analysis. Patients with TS were included in study after complete noninvasive and invasive cardiovascular diagnostic evaluation and compared to an age and gender matched control group of healthy subjects. Series of R–R interval and of ST–T interval values were obtained from 24-h ECG recordings after digital sampling. HRV analysis was performed by ‘range rescaled analysis’ to determine the Hurst exponent, by detrended fluctuation analysis to quantify fractal longrange correlation properties, and by approximate entropy to assess time-series predictability. Short- and long-term fractal-scaling exponents were significantly higher in patients with TS in acute phases, opposite to lower approximate entropy and Hurst exponent, but all variables normalized in a few weeks. Dynamic HRV analysis allows assessing changes in complexity features of HRV in TS patients during the acute stage, and to monitor recovery after treatment, thus complementing traditional ECG and clinically analysis.
Keywords:Heart rate variability, Nonlinear dynamics, Chaos theory, Stress-induced cardiomyopathy, Takotsubo syndrome
Year of publishing:2012
Number of pages:1037-1046
Numbering:10, 50
COBISS_ID:4843515 Link is opened in a new window
URN:URN:SI:UNG:REP:U8PX2UVS
DOI:10.1007/s11517-012-0947-z Link is opened in a new window
License:CC BY-NC-ND 4.0
This work is available under this license: Creative Commons Attribution Non-Commercial No Derivatives 4.0 International
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Record is a part of a journal

Title:Medical and Biological Engineering and Computing
Shortened title:Med Biol Eng Comput
Publisher:Springer Verlag (Germany)
ISSN:0140-0118
Year of publishing:2012

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