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Implantable medical device responsive to heart rate variability analysis

  • US 6,144,878 A
  • Filed: 01/05/2000
  • Issued: 11/07/2000
  • Est. Priority Date: 12/11/1995
  • Status: Expired due to Term
First Claim
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1. A method for evaluating heart rate variability of the heart of a patient, comprising the steps of:

  • receiving a plurality of heart beat signals from said heart for each of a plurality of epochs;

    computing a measurement of heart rate variability for each of said epochs;

    defining an abnormal heart rate variability zone to include a first measurement of heart rate variability from a corresponding first epoch if said heart exhibits a cardiac anomaly during said first epoch; and

    comparing said abnormal heart rate variability zone with said measurements of heart rate variability occurring after said first epoch.

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