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TECHNIQUES FOR ACCURATELY DERIVING PHYSIOLOGIC PARAMETERS OF A SUBJECT FROM PHOTOPLETHYSMOGRAPHIC MEASUREMENTS

  • US 20130085354A1
  • Filed: 09/25/2012
  • Published: 04/04/2013
  • Est. Priority Date: 01/10/2007
  • Status: Abandoned Application
First Claim
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1. A method for deriving physiologic parameters of a subject from plethysmographic measurements comprising the steps of:

  • Obtaining a frequency spectrum of a time-based plethysmograph of the subject;

    Detecting a series of at least three peaks of the frequency spectrum;

    Calculating a change of frequency between adjacent detected peaks of the series of detected peaks of the frequency data set; and

    Identifying a repeating change of frequency between adjacent detected peaks of the series of detected peaks of the frequency data set; and

    Utilizing the identified repeating change of frequency to derive physiologic parameters of the subject.

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