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System and method to determine premature ventricular contraction (PVC) type and burden

  • US 9,706,938 B2
  • Filed: 10/29/2015
  • Issued: 07/18/2017
  • Est. Priority Date: 10/29/2015
  • Status: Active Grant
First Claim
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1. A method of monitoring and reporting premature ventricular contractions (PVCs) detected in a patient, the method comprising:

  • monitoring an electro-cardiogram (ECG) signal of the patient with an adherent device that includes a plurality of electrodes;

    detecting premature ventricular contraction (PVC) beats based on the monitored ECG signal, and storing ECG episodes associated with detected PVC beats;

    calculating a morphology signal by quantifying the stored ECG episodes associated with detected PVC beats;

    numerically clustering the PVC beats based on the calculated morphology signals to group PVC beats having a similar morphology;

    generating an output that includes one or more of a total number of clusters generated, a count of the number of PVC beats included in each cluster, and a representative PVC beat from each clusterwherein calculating the morphology signal includes calculating a wavelet signal decomposition of the ECG episode associated with each detected PVC beat, and wherein calculating the wavelet signal decomposition of the ECG episode includes utilizing a linear combination of sub-band signals defined by equation smorph=ybph+ybpm+ybpl, wherein ybph, ybpm, and ybpl are band-pass limited sub-bands that correspond to different QRS frequencies and smorph is the resulting morphology signal.

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