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DETECTION OF HEART FAILURE USING A PHOTOPLETHYSMOGRAPH

  • US 20070213621A1
  • Filed: 05/17/2007
  • Published: 09/13/2007
  • Est. Priority Date: 11/22/2004
  • Status: Active Grant
First Claim
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1. A method for diagnosis, comprising:

  • receiving a signal associated with blood oxygen saturation of a patient during sleep;

    filtering the signal so as to eliminate signal components at frequencies equal to and greater than a respiratory frequency of the patient; and

    processing the filtered signal to detect a pattern corresponding to multiple cycles of periodic breathing.

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