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RMS electrocardiography system and method

  • US 8,849,381 B2
  • Filed: 07/11/2006
  • Issued: 09/30/2014
  • Est. Priority Date: 07/11/2006
  • Status: Expired due to Fees
First Claim
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1. A system for assessing a cardiac condition of a subject, the system comprising:

  • electronic circuitry configured to record a plurality N of electrocardiographic signals from the subject to generate an ECG (electrocardiogram); and

    a processor configured to compute estimates of a plurality of variables from the recorded signals that contain information about the cardiac condition of the subject using at least one RMS (root-mean-square) magnitude function to compute RMS variables that contain information about the cardiac condition of the subject including fiducial marks providing, on a beat by beat basis, estimates of;

    (a) the mean ventricular depolarization time, (b) the mean ventricular repolarization time, (c) the mean ventricular action potential duration, and (d) the ranges of both depolarization and repolarization times;

    wherein a mathematical formulation of the RMS magnitude function comprises;

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