| Short-term forecasting of life-threatening cardiac arrhythmias based on symbolic dynamics and finite-time growth rates. | |
| | |
MedLine Citation:
|
PMID: 11046317 Owner: NLM Status: MEDLINE |
Abstract/OtherAbstract:
|
Ventricular tachycardia or fibrillation (VT-VF) as fatal cardiac arrhythmias are the main factors triggering sudden cardiac death. The objective of this study is to find early signs of sustained VT-VF in patients with an implanted cardioverter-defibrillator (ICD). These devices are able to safeguard patients by returning their hearts to a normal rhythm via strong defibrillatory shocks; additionally, they store the 1000 beat-to-beat intervals immediately before the onset of a life-threatening arrhythmia. We study these 1000 beat-to-beat intervals of 17 chronic heart failure ICD patients before the onset of a life-threatening arrhythmia and at a control time, i.e., without a VT-VF event. To characterize these rather short data sets, we calculate heart rate variability parameters from the time and frequency domain, from symbolic dynamics as well as the finite-time growth rates. We find that neither the time nor the frequency domain parameters show significant differences between the VT-VF and the control time series. However, two parameters from symbolic dynamics as well as the finite-time growth rates discriminate significantly both groups. These findings could be of importance in algorithms for next generation ICD's to improve the diagnostics and therapy of VT-VF. |
| | |
Authors:
|
N Wessel; C Ziehmann; J Kurths; U Meyerfeldt; A Schirdewan; A Voss |
Related Documents
:
|
7551317 - Cure of interfascicular reentrant ventricular tachycardia by ablation of the anterior f... 19351627 - Mitral isthmus pathology of re-entrant ventricular tachycardia in a patient with idiopa... 1905617 - Ventricular tachycardia with congenital ventricular diverticulum. 3825897 - Programmed electrical stimulation in healed myocardial infarction using a standardized ... 19744087 - Adaptative or maladaptative hypertrophy, different spatial distribution of myocardial c... 9697067 - Preoperative left ventricular systolic dysfunction correlates with the adverse postoper... |
Publication Detail:
|
Type: Journal Article; Research Support, Non-U.S. Gov't |
Journal Detail:
|
Title: Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics Volume: 61 ISSN: 1063-651X ISO Abbreviation: Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics Publication Date: 2000 Jan |
Date Detail:
|
Created Date: 2001-01-23 Completed Date: 2001-01-26 Revised Date: 2008-11-21 |
Medline Journal Info:
|
Nlm Unique ID: 9887340 Medline TA: Phys Rev E Stat Phys Plasmas Fluids Relat Interdiscip Topics Country: UNITED STATES |
Other Details:
|
Languages: eng Pagination: 733-9 Citation Subset: IM |
Affiliation:
|
University of Applied Sciences Jena, Tatzendpromenade 1b, 07745 Jena, Germany. wessel@fvk-berlin.de |
Export Citation:
|
APA/MLA Format Download EndNote Download BibTex |
| MeSH Terms | |
Descriptor/Qualifier:
|
Algorithms Arrhythmias, Cardiac / diagnosis*, physiopathology, therapy Biophysical Phenomena Biophysics Defibrillators, Implantable Heart Failure / physiopathology, therapy Heart Rate Humans Models, Cardiovascular Nonlinear Dynamics Tachycardia, Ventricular / diagnosis, physiopathology, therapy Ventricular Fibrillation / diagnosis, physiopathology, therapy |
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine
Previous Document: From local to global spatiotemporal chaos in a cardiac tissue model.
Next Document: Coherence resonance and noise-induced synchronization in globally coupled Hodgkin-Huxley neurons.