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METHODS AND DEVICES IMPLEMENTING DUAL CRITERIA FOR ARRHYTHMIA DETECTION

  • US 20140257421A1
  • Filed: 03/10/2014
  • Published: 09/11/2014
  • Est. Priority Date: 03/11/2013
  • Status: Active Grant
First Claim
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1. An implantable cardiac stimulus device comprising electrodes coupled to operational circuitry for sensing cardiac activity and detecting events in the sensed cardiac activity and delivering therapy in response to identified conditions, in which the operational circuitry is configured to use one or more arrhythmia identification parameters which can be modified within predefined ranges, wherein the operational circuitry is configured to:

  • establish a preliminary identification of a potentially treatable arrhythmia using a set of detected events;

    determine whether the set of detected events are varying in shape or consistent in shape using a predefined parameter;

    if the set of detected events is varying in shape, apply a first value for the arrhythmia detection parameter to assess whether the preliminary identification of a potentially treatable arrhythmia should be declared as an episode of treatable arrhythmia; and

    if the set of detected events is not varying in shape, apply a second value for the arrhythmia detection parameter to assess whether the preliminary identification of a potentially treatable arrhythmia should be declared as an episode of treatable arrhythmia;

    wherein the second value is different from the first value.

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