Poincare mapping method for T-wave alternans using a nonlinear dynamic system / 中国组织工程研究
Chinese Journal of Tissue Engineering Research
;
(53): 1645-1648, 2010.
Artigo
em Chinês
| WPRIM
| ID: wpr-403555
ABSTRACT
BACKGROUND:
The microvolt T-wave alternans (MTWA) is an important index for ventricular arrhythmias prediction and is a promising tool to evaluate non-invasively malignant ventricular arrhythmia and risk of sudden death.OBJECTIVE:
To introduce a algorithm for detecting TWA using Poincare mapping method (PM),which is a technique for dynamics systems to display periodic behavior.METHODS:
Samples series of beat to beat cycles were selected to prepare Poincare mapping to describe TWA distdbution.D_(twa),which denoted the sum distances between the origin to even and odd series,was used to present the presence and absence of TWA.RESULTS ANDCONCLUSION:
This algorithm was applied in MIT/BIH Arrhythmia database and European ECG ST-T database,and D_(twa) used for correlation analysis with V_(twa),which denoted TWA amplitude of Spectrum Method.The cross-correlation coefficient was γ= 0.984.The algorithm can identify the absence and presence of TWA accurately and provide idea for further study of TWA-PM.
Texto completo:
DisponíveL
Índice:
WPRIM (Pacífico Ocidental)
Tipo de estudo:
Estudo prognóstico
Idioma:
Chinês
Revista:
Chinese Journal of Tissue Engineering Research
Ano de publicação:
2010
Tipo de documento:
Artigo
Similares
MEDLINE
...
LILACS
LIS