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Computerized systems and methods for stability-theoretic prediction and prevention of sudden cardiac death

  • US 9,585,590 B2
  • Filed: 12/23/2013
  • Issued: 03/07/2017
  • Est. Priority Date: 12/31/2009
  • Status: Active Grant
First Claim
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1. Non-transitory computer-readable media having computer-executable instructions embodied thereon that when executed, facilitate a method for automatically providing a notification for ventricular arrhythmias in an individual that are likely to result in sudden cardiac death (SCD), the method comprising:

  • receiving electrocardiography (ECG) signals representative of electrical activity of a heart of the individual;

    identifying QRS and T wave morphology for isochronic points between substantially-consecutive T waves in the ECG signals;

    determining a QT dispersion stability index as a function of the QRS and T wave morphology, the determining comprising calculating a moving average of Lyapunov exponents;

    determining a difference between the QT dispersion stability index and a reference value to detect a presence of instability of QT interval dispersion in the ECG signals, the difference corresponding to a risk of sudden cardiac death (SCD); and

    providing a notification when an increased risk for SCD is determined.

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