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Method for estimating cardiac pressure using parameters derived from impedance signals detected by an implantable medical device

  • US 8,068,907 B2
  • Filed: 08/20/2007
  • Issued: 11/29/2011
  • Est. Priority Date: 01/11/2000
  • Status: Expired due to Fees
First Claim
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1. A method for estimating cardiac pressure within a patient using an implantable medical device, the method comprising:

  • measuring an electrical parameter across the thoracic cavity of a patient, the electrical parameter being associated with cardiac tissues of the patient, wherein the electrical parameter is indicative of cardiac pressure;

    estimating cardiac pressure within the patient by applying predetermined conversion factors to the measured electrical parameter; and

    signaling a user to calibrate an implanted pressure sensor based upon the estimated cardiac pressure.

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