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Method for monitoring heart failure

  • US 6,480,733 B1
  • Filed: 12/17/1999
  • Issued: 11/12/2002
  • Est. Priority Date: 11/10/1999
  • Status: Expired due to Term
First Claim
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1. A method for monitoring the progression of the disease state of a heart failure patient comprising the steps of:

  • (a) sensing a physiologic signal indicative of cardiac contraction of said patient'"'"'s heart;

    (b) identifying the location of fiducial points within said sensed signal;

    (c) calculating a time interval between each of a sequence of successive fiducial points;

    (d) calculating a measure of heart rate variability (HRV) based on said calculated time intervals;

    (e) repeating steps (a) through (d) to acquire a plurality of HRV measures;

    (f) storing a prescribed duration of the sensed physiologic signal in a long term memory; and

    (g) analyzing said plurality of HRV measures to provide an indication of the progression of the disease state of said heart failure patient.

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