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Cardiac response classification using retriggerable classification windows

  • US 9,993,205 B2
  • Filed: 06/17/2010
  • Issued: 06/12/2018
  • Est. Priority Date: 12/12/2003
  • Status: Active Grant
First Claim
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1. A method of classifying a cardiac response to a pacing stimulation, comprising:

  • delivering the pacing stimulation to a heart chamber;

    sensing a cardiac signal of the heart chamber following delivery of the pacing stimulation;

    detecting a first trigger feature of the cardiac signal within a first predetermined capture detection region;

    in response to detecting the first trigger feature of the cardiac signal within the first predetermined capture detection region, continuing to evaluate at least a portion of a QRS waveform of the cardiac signal that occurs after the first trigger feature;

    classifying the cardiac response as fusion or capture of the heart chamber based on at least a portion of the QRS waveform of the cardiac signal that occurs after the first trigger feature; and

    delivering pacing therapy based on the classification of the cardiac response as fusion or capture.

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