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Deriving Patient Activity Information from Sensed Body Electrical Information

  • US 20090156908A1
  • Filed: 12/14/2007
  • Published: 06/18/2009
  • Est. Priority Date: 12/14/2007
  • Status: Active Grant
First Claim
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1. A method of storing information indicative of patient activity, the method comprising:

  • receiving an electrical waveform using subcutaneous electrodes, the received electrical waveform comprising electrical signals generated by electrical activity of a heart in a patient during a selected time period;

    determining a value to represent a level of physical activity of the patient by identifying portions of the received electrical waveform that include signals indicative of non-cardiac muscular activity in the patient; and

    storing the determined value in a data store for subsequent retrieval as an indicator of a level of physical activity of the patient during the selected time period.

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