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DISCRIMINATING BETWEEN TACHYCARDIAS OF VENTRICULAR ORIGIN AND SUPRA ENTRICULAR ORIGIN, METHODS AND APPARATUS

  • US 20100249626A1
  • Filed: 03/27/2009
  • Published: 09/30/2010
  • Est. Priority Date: 03/28/2008
  • Status: Active Grant
First Claim
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1. An active medical device, having means for collecting an electrical activity of a patient'"'"'s heart, including means for producing at least two distinct temporal components corresponding to two EGM signals of a ventricular electrogram;

  • means for detecting a presence of a tachycardia episode in said collected electrical activity; and

    diagnosis means for diagnosing a ventricular tachyarrhythmia including means for discriminating in the detected tachycardias between a Ventricular Tachycardia originated in the ventricles and a Supra-Ventricular Tachycardia originated above the ventricles, wherein the improvement comprises;

    the collecting means further comprising means for producing a first and a second distinct temporal components from said two distinct EGM signals of ventricular electrogram;

    the diagnosis means further comprises means for conducting a bi-dimensional analysis, able to determine, from the variations of one of said first and second temporal components as a function of the other of said first and second temporal components, a 2D characteristic representative of a heart beat; and

    discriminator means further comprising means for comparing;

    a first current 2D characteristic, representative of a tachycardia beat (SVT, VT), from said at least two EGM signals collected during a tachycardia episode, witha second reference 2D characteristic, representative of a Sinus Rhythm (SR) beat from said two EGM signals, collected from non-tachycardia episodes.

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