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Identification and remediation of oversensed cardiac events using far-field electrograms

  • US 8,078,277 B2
  • Filed: 10/29/2008
  • Issued: 12/13/2011
  • Est. Priority Date: 10/29/2008
  • Status: Active Grant
First Claim
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1. A method comprising:

  • acquiring a first cardiac signal via a first sense electrode configuration;

    acquiring a second cardiac signal via a second sense electrode configuration;

    detecting cardiac events in the first cardiac signal;

    identifying at least some of the cardiac events detected in the first cardiac signal as oversensed events based on whether one or more characteristics of the second cardiac signal confirm the cardiac events;

    determining time intervals between the detected cardiac events;

    determining repaired time intervals, each of the repaired time intervals being determined based on a sum of time intervals between a first detected cardiac event not identified as an oversensed event, one or more detected cardiac events identified as oversensed events, and a second detected cardiac event not identified as an oversensed event; and

    controlling delivery of cardiac electrical stimulation therapy to a patient based on the repaired time intervals.

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