Discriminating at-risk post-MI patients by fractal dimension analysis of the late potential attractor

RH Mitchell, OJ Escalona

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A novel and reliable approach which quantifies the degree of complexity of late potential (LP) activity in the time domain is presented. By defining the LP attractor in the microvoltage, 3-dimensional space, and then computing the fractal dimension (δ) of the attractor's trajectory, the degree of complexity of LP can be quantified with a single parameter. δ may indicate the chaotic behaviour of the terminal activity of the ventricular depolarisation process. The fractal dimension of the LP Attractor in post-MI subjects that are at risk is significantly higher than in post-MI subjects with low LP activity (p
Original languageEnglish
Title of host publicationUnknown Host Publication
Number of pages3
Publication statusPublished - 15 Nov 1988
Event20th Annual International Conference of the IEEE EMBS, EMBC-1998, Hong Kong - Hong Kong
Duration: 15 Nov 1988 → …


Conference20th Annual International Conference of the IEEE EMBS, EMBC-1998, Hong Kong
Period15/11/88 → …



  • At-risk post-MI patients discrimination
  • catastrophic arrhythmic episode
  • degree of complexity
  • deterministic chaos
  • fractal dimension analysis
  • bi- directional high-pass filtering
  • late potential activity
  • late potential attractor
  • microvoltage 3D space
  • myocardial infarct
  • phase space
  • single parameter
  • QRS terminal activity
  • time domain
  • ventricular depolarisation process
  • chaos
  • electrocardiography
  • filtering theory
  • fractals
  • medical signal detection
  • medical signal processing
  • phase space methods
  • ECG.

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