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Method and apparatus for diagnosing vulnerability to lethal cardiac arrhythmias

  • US 5,201,321 A
  • Filed: 02/11/1991
  • Issued: 04/13/1993
  • Est. Priority Date: 02/11/1991
  • Status: Expired due to Term
First Claim
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1. A method of analyzing heart beats to obtain an indication of heart conditions favorable to heart failure comprising the steps of:

  • (a) measuring a series of N heart beats;

    (b) measuring in the N series the relative beat-to-beat timing and providing a series of such measurements; and

    (c) analyzing the beat-to-beat timing for chaos in the timing wherein the chaos is represented by an instantaneous value of dimension of the beat timing in a multidimensional representation of the chaos having values up to m dimensions where a healthy heart is represented by a higher dimensional value m and a lower value of m indicates a less healthy heart.

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