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Atrial arrhythmia episode detection in a cardiac medical device

  • US 10,004,418 B2
  • Filed: 01/23/2015
  • Issued: 06/26/2018
  • Est. Priority Date: 01/23/2015
  • Status: Active Grant
First Claim
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1. A method of identifying a cardiac waveform in a medical device, comprising:

  • sensing cardiac signals;

    identifying R-waves in the cardiac signal;

    determining P-waves associated with each of the identified R-waves;

    determining one or more parameters associated with each of the determined P-waves;

    determining relative changes of the determined P-waves based on the one or more determined parameters;

    determining whether each of the determined P-waves match within a match threshold based on the determined relative changes; and

    generating a P-wave template based on the determined P-waves in response to determining that each of the determined P-waves match within the match threshold.

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