Pathological analysis of myocardial cell under ventricular tachycardia andfibrillation based on symbolic dynamics

Citation
Hx. Zhang et al., Pathological analysis of myocardial cell under ventricular tachycardia andfibrillation based on symbolic dynamics, J MED EN TE, 25(3), 2001, pp. 112-117
Citations number
23
Language
INGLESE
art.tipo
Article
Categorie Soggetti
Research/Laboratory Medicine & Medical Tecnology
Journal title
JOURNAL OF MEDICAL ENGINEERING & TECHNOLOGY
ISSN journal
0309-1902 → ACNP
Volume
25
Issue
3
Year of publication
2001
Pages
112 - 117
Database
ISI
SICI code
0309-1902(200105/06)25:3<112:PAOMCU>2.0.ZU;2-L
Abstract
Ventricular fibrillation (VF) is one of the most,serious malignant arrhythm ias usually resulting from immediate degeneration of ventricular tachycardi a (VT). In order to analyse the nonlinear dynamics of the cardiac micro-mec hanism under VT and VF rhythm, at the cellular level, myocardial cell actio n potentials are investigated tinder different rhythm, normal sinus rhythm, VT and VF. On the basis of nonlinear chaotic theory and symbolic dynamics, we put forward new definitions, complexity rate, etc, and obtained some us eful properties for cellular electrophysiological analysis. The results of the experiments and computation show that the myocardial cellular signals u nder VT and VF rhythm are different kinds of chaotic signals in that the ca rdiac chaos attractor under VF is higher than that under VT. The analytical complexity theory has been promising in the clinical application.