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METHOD AND APPARATUS FOR IDENTIFYING OVERSENSING USING FAR-FIELD INTRACARDIAC ELECTROGRAMS AND MARKER CHANNELS

  • US 20090292331A1
  • Filed: 06/02/2009
  • Published: 11/26/2009
  • Est. Priority Date: 04/18/2005
  • Status: Active Grant
First Claim
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1. A method for identifying oversensing of cardiac events by an implantable medical device, comprising the steps of:

  • detecting a near-field electrogram signal;

    detecting a far-field electrograms signal;

    comparing said near-field electrogram with said far-field electrogram;

    identifying possible oversensing events based on a result from said comparing step; and

    removing, from the possible oversensing events from the identifying step, possible oversensing events that have amplitudes above an amplitude threshold criterion and possible oversensing events that occur outside of a blanking interval period immediately after a preceding intrinsic depolarization.

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