Abstract
The presence of ventricular late potential activity in patients with post-myocardial infarction has been correlated with their susceptibility to develop ventricular tachycardia and may be used as a risk criterion. A reliable novel approach for characterizing ventricular late potentials is presented in this paper. It consists in analyzing the degree of complexity of late potentials by quantifying their fractal dimension (δ). Fractal dimensional analysis was applied to the late potential's attractor traced in the microvoltage, 3-dimensional space. The δ parameter may be interpreted as an index of the chaotic behaviour of the terminal activity of the ventricular depolarization process which could trigger a catastrophic arrhythmic episode. Clinical trial results indicated that the value of δ was significantly higher in at risk patients than in healthy subjects (p
| Original language | English |
|---|---|
| Pages (from-to) | 23-34 |
| Journal | Automedica |
| Volume | 16 |
| Issue number | 1-2 |
| Publication status | Published (in print/issue) - 15 Jan 1994 |
Keywords
- Cardiovascular system
- Chaos theory
- Electrocardiography
- Electrophysiology
- Fractals
- Mathematical models
- Numerical analysis
- Parameter estimation
- Time domain analysis
- Fractal dimensional analysis
- Myocardial infarction
- Ventricular late potentials
- Ventricular tachycardia
- Bioelectric potentials
- Digital Filtering.