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Rate responsive pacemaker with exercise recovery using minute volume determination

  • US 5,836,988 A
  • Filed: 05/02/1997
  • Issued: 11/17/1998
  • Est. Priority Date: 05/02/1997
  • Status: Expired due to Term
First Claim
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1. A rate responsive implantable pacemaker for implantation in a patient, said pacemaker comprising:

  • a cardiac sensor for sensing cardiac activity and for generating a cardiac activity signal;

    a pace generator for generating pacing pulses in response to pacing commands;

    a parameter sensor for sensing a metabolic demand parameter;

    a parameter processing circuit for processing said metabolic demand parameter to generate a metabolic indicated parameter;

    an exercise recovery identifying circuit for identifying when said patient is recovering from exercise, said exercise recovery circuit generating a corresponding recovery signal;

    a controller receiving said cardiac activity signal, said exercise recovery signal and said metabolic indicated parameter for generating said pacing commands.

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