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Detection of renal failure by cardiac implantable medical device

  • US 7,529,580 B2
  • Filed: 08/11/2005
  • Issued: 05/05/2009
  • Est. Priority Date: 08/11/2005
  • Status: Active Grant
First Claim
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1. An implantable medical system for detecting renal failure comprising:

  • at least one lead comprising an electrode configured for placement within a patient in electrical contact with the patient'"'"'s heart and operative to sense intracardiac electrograms;

    an implantable medical device adapted to be connected to the at least one lead and comprising;

    a tracking unit that tracks two different intervals between QRS complexes and corresponding T waves for each of at least two different PQRST complexes within an intracardiac electrogram sensed by the at least one lead; and

    a renal failure detection unit that detects renal failure if each of the two different intervals decrease by a respective amount, wherein the renal failure detection unit calculates a renal failure burden representative of a proportion of time renal failure is detected.

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