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Method and apparatus for trending a physiological cardiac parameter

  • US 7,171,258 B2
  • Filed: 06/25/2003
  • Issued: 01/30/2007
  • Est. Priority Date: 06/25/2003
  • Status: Active Grant
First Claim
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1. A method of predicting sudden cardiac death comprising:

  • determining intra-cardiac impedance;

    deriving at least one physiologic cardiac parameter from the determined impedance, the physiological cardiac parameter comprising an ejection fraction;

    generating trended data by trending the derived physiologic cardiac parameter over spaced time intervals; and

    predicting the onset of a sudden cardiac death episode using the trended data.

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