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Categorizing automatically generated physiological data based on industry guidelines

  • US 8,690,789 B2
  • Filed: 05/09/2011
  • Issued: 04/08/2014
  • Est. Priority Date: 08/08/2006
  • Status: Active Grant
First Claim
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1. A method for assisting in a referral indication of heart murmurs, the method comprising the steps of:

  • receiving an acoustic signal representing heart sounds;

    parsing the received acoustic signal into predetermined physiological events including a plurality of systolic intervals and a plurality of diastolic intervals;

    computing a first normalized mid-range energy representative of a median systolic interval and a second normalized mid-range energy representative of a median diastolic interval, respectively, the first and second normalized mid-range energies computed from the parsed acoustic signal;

    characterizing the median systolic interval based on the first normalized mid-range energy by computing a focal point of energy using a maximum first normalized mid-range energy and systolic interval temporal center of a normalized mid-range energy concentration to generate a model of the median systolic interval;

    determining probabilities relative to a first condition associated with the referral indication and a second condition associated with an absence of the referral indication based on the characterized median systolic interval; and

    presenting the first normalized mid-range energy, the second normalized mid-range energy and the determined probabilities,whereby the presented first normalized mid-range energy, the second normalized mid-range energy and the determined probabilities may be used to determine whether the referral is indicated.

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