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Method for determining dominant heart rates

  • US 5,357,970 A
  • Filed: 04/08/1993
  • Issued: 10/25/1994
  • Est. Priority Date: 04/08/1993
  • Status: Expired due to Fees
First Claim
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1. A method for determining a dominant heart rate from a series of beat triggers representative of a mixed series of normal heart beats and non-arrhythmic activities, with the beat triggers being determined at a specific sampling rate defining sample intervals, comprising the steps of:

  • framing a window to include a portion of the series of beat triggers and to be beat-aligned with a first beat trigger and a last beat trigger, the window thereby defining a plurality of trigger intervals for respective adjacent beat triggers, with each trigger interval containing a plurality of the sample intervals existing between the respective adjacent beat triggers;

    summing the windowed sample intervals;

    for each of the trigger intervals, computing a weight factor based upon the ratio of the summed windowed sample intervals to the number of sample intervals within that trigger interval;

    grouping the trigger intervals according to the weight factors;

    computing the percentage of the window that each group of weight factors constitutes to determine the dominant group containing the dominant beat triggers; and

    analyzing the dominant beat triggers within the dominant group to determine the dominant heart rate.

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