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Method and system for adjusting a stimulation rate of an implantable medical device

  • US 8,588,905 B2
  • Filed: 05/28/2010
  • Issued: 11/19/2013
  • Est. Priority Date: 05/28/2010
  • Status: Active Grant
First Claim
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1. An implantable medical device comprising:

  • a lead including electrodes configured to be positioned within a heart to sense cardiac signals of the heart;

    a detector to analyze the cardiac signals of the heart and detect atrial arrhythmias;

    a pulse generator electrically coupled to the lead and adapted to deliver stimulus pulses to the heart through at least one of the electrodes;

    a cardiac signal module to monitor the cardiac signals and direct the pulse generator to deliver one or more of the stimulus pulses to the heart at a stimulation rate based on the cardiac signals during a detected atrial arrhythmia;

    a fusion detection module to identify a presence of fusion-based behavior of the heart that is associated with delivery of the one or more of the stimulus pulses during the detected atrial arrhythmia; and

    a rate modification module to adjust the stimulation rate based on the presence of the fusion-based behavior.

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