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System and Method for Distinguishing Among Cardiac Ischemia, Hypoglycemia and Hyperglycemia Using an Implantable Medical Device

  • US 20090177104A1
  • Filed: 01/27/2009
  • Published: 07/09/2009
  • Est. Priority Date: 01/25/2005
  • Status: Active Grant
First Claim
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1. A method for use with an implantable medical device for detecting cardiac ischemia in a patient in which the device is implanted, the method comprising:

  • tracking paced repolarization peak-based intervals representative of intervals between depolarization events induced by pacing pulses delivered by the implantable medical device, and peaks of corresponding repolarization events within electrical cardiac signals;

    tracking sensed repolarization peak-based intervals separate from the paced repolarization peak-based intervals, wherein the sensed repolarization peak-based intervals comprise intervals representative of intervals between intrinsic depolarization events and peaks of corresponding repolarization events within electrical cardiac signals; and

    detecting an episode of cardiac ischemia based on a decrease in at least one of the paced repolarization peak-based intervals and the sensed repolarization peak-based intervals.

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