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Analysis of heart waveforms

  • US 5,694,942 A
  • Filed: 01/30/1996
  • Issued: 12/09/1997
  • Est. Priority Date: 05/21/1993
  • Status: Expired due to Fees
First Claim
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1. A method of analyzing Ventricular Late Potential (VLP) comprising:

  • measuring electrocardiogram signals of a patient in at least three dimensions and deriving three dimensional VLP values from the electrocardiogram signals;

    determining an VLP onset point and a VLP offset point based on the three dimensional VLP values;

    deriving an attractor for the VLP in at least a three dimensional voltage space from the VLP values between the VLP onset point and the VLP offset point;

    estimating a fractal dimension of the VLP attractor from a quotient of Log(L)/Log(DD), where L is a total length of the VLP attractor between the VLP onset point and the VLP offset point, and DD is a spherical extent of the VLP attractor; and

    analyzing a condition of a patient based on the estimate fractal dimension.

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