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Procedure for deriving reliable information on respiratory activity from heart period measurement

  • US 7,460,901 B2
  • Filed: 05/30/2003
  • Issued: 12/02/2008
  • Est. Priority Date: 05/29/2002
  • Status: Active Grant
First Claim
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1. A method for deriving reliable information on respiratory activity from a pattern of rhythmic changes in heart beat data, the method comprising the steps of:

  • measuring an electrocardiographic (ECG)-signal;

    obtaining RR-interval data from the ECG-signal;

    calculating respiratory frequency estimates from the RR-interval data using two or more sub-methods, at least one sub-method being based on heart rate variability;

    combining the calculated respiratory frequency estimates in a health apparatus using an expert function including a weight vector across frequencies for each frequency estimate and obtaining a resulting respiratory frequency estimate directly in the combination made by said expert function.

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