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System and method for evaluating risk of mortality due to congestive heart failure using physiologic sensors

  • US 6,645,153 B2
  • Filed: 02/07/2002
  • Issued: 11/11/2003
  • Est. Priority Date: 02/07/2002
  • Status: Expired due to Term
First Claim
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1. In an implantable medical device for implant within a patient, a system comprising:

  • means for receiving signals representative of physiological parameters of the patient; and

    means for determining a risk of mortality to congestive heart failure for the patient based on the signals;

    wherein the means for determining the risk of mortality to congestive heart failure includes means for determining ventilatory response for the patient based on the signals received from the sensors;

    means for determining heart rate reserve for the patient as a function of the exertion level of the patient based on signals received from the sensors; and

    means for combining the ventilatory response with the heart rate reserve as a function of the exertion level to yield a single congestive heart failure mortality risk metric.

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