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System and method for controlling implantable medical device parameters in response to atrial pressure attributes

  • US 7,181,283 B2
  • Filed: 03/31/2005
  • Issued: 02/20/2007
  • Est. Priority Date: 03/31/2005
  • Status: Active Grant
First Claim
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1. A method for controlling implantable medical device parameters, said method comprising:

  • obtaining a left atrial pressure signal;

    indentifying at least one attribute of said left atrial pressure signal, said at least one attribute being indicative of cardiac performance;

    automatically adjusting at least one output parameter of an implantable medical device to enhance hemodynamic performance in response to said at least one attribute, said left atrial pressure signal comprising a v-wave characteristic, an a-wave characteristic, and a c-wave characteristic;

    determining a v-wave peak time corresponding to said v-wave characteristic, an a-wave peak time corresponding to said a-wave characteristic, and a c-wave peak time corresponding to said c-wave characteristic; and

    calculating a first time period (tva) based upon said v-wave peak time and said a-wave peak time, and a second time period (tac) based upon said a-wave peak time and said c-wave peak time, said at least one attribute corresponding to a ratio of tva and tac.

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