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Therapy control based on the rate of change of intracardiac impedance

  • US 20070005114A1
  • Filed: 06/29/2005
  • Published: 01/04/2007
  • Est. Priority Date: 06/29/2005
  • Status: Active Grant
First Claim
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1. A system comprising a medical device including:

  • a medical device including;

    an impedance measurement circuit adapted to be coupled to implantable electrodes to obtain an intracardiac impedance signal between electrodes;

    a therapy circuit operable to deliver a therapy to a subject; and

    a controller circuit coupled to the impedance measurement circuit and the therapy circuit, wherein the controller circuit is operable to determine a time rate of change of the intracardiac impedance signal, and to adjust at least one parameter related to therapy in manner that alters the rate of change.

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