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Automatic thresholds for atrial tachyarrhythmia detection in an implantable medical device

  • US 10,368,769 B2
  • Filed: 05/08/2017
  • Issued: 08/06/2019
  • Est. Priority Date: 07/27/2016
  • Status: Active Grant
First Claim
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1. A method of detecting an atrial tachyarrhythmia episode by a medical device comprising:

  • obtaining a cardiac electrical signal sensed via a plurality of electrodes coupled to sensing circuitry of the medical device;

    determining a time duration of the cardiac electrical signal classified as an atrial tachyarrhythmia;

    determining that the time duration is greater than or equal to a first detection threshold;

    detecting a first atrial tachyarrhythmia episode by a processor of the medical device in response to the time duration being greater than or equal to the first detection threshold;

    determining that detection threshold adjustment criteria are met based on at least the detected first atrial tachyarrhythmia episode; and

    adjusting the first detection threshold to a second detection threshold different than the first detection threshold in response to the detection threshold adjustment criteria being met.

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