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Calculating and monitoring a composite stress index

  • US 9,189,599 B2
  • Filed: 05/13/2011
  • Issued: 11/17/2015
  • Est. Priority Date: 05/13/2011
  • Status: Active Grant
First Claim
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1. A method comprising, by one or more processors associated with one or more computing devices:

  • accessing, by one or more of the processors, one or more data streams from a plurality of sensors, wherein;

    the sensors comprise;

    a glucocorticoid meter and one or more first sensors selected from a first group of sensor types consisting of a heart-rate monitor, a blood-pressure monitor, a pulse oximeter, and an accelerometer;

    one or two second sensors selected from a second group of sensor types consisting of a mood sensor, a behavioral sensor, and an environmental sensor;

    one third sensor also selected from the second group of sensor types, the third sensor being different in sensor type from each of the two second sensors;

    the data streams comprise glucocorticoid data of a person from the glucocorticoid meter and one or more of heart-rate data of the person from the heart-rate monitor, blood-pressure data of the person from the blood-pressure monitor, pulse-oximetry data of the person from the pulse oximeter, accelerometer data of the person from the accelerometer, self-reported mood data of the person from the mood sensor, behavioral data of the person from the behavioral sensor, or environmental data from the environmental sensor;

    a first data set from the data streams was collected from the person at a first time, the person having been exposed to a stressor at the first time, as indicated by data in the first data set from the glucocorticoid meter and the third sensor; and

    a second data set from the data streams was collected from the person at a second time, the person not having been exposed to the stressor at the second time, as indicated by data in the second data set from the glucocorticoid meter and the third sensor;

    accessing, by one or more of the processors, a stress model comprising baseline renal-Doppler data and baseline glucocorticoid data of the person, and two or more of baseline heart-rate data of the person, baseline blood-pressure data of the person, baseline pulse-oximetry data of the person, baseline accelerometer data of the person, or baseline self-reported mood data of the person, wherein the baseline-renal-Doppler data measures a stress response of the sympathetic nervous system, and wherein the stress model correlates the baseline renal-Doppler data and the baseline glucocorticoid data of the person with the baseline heart-rate data of the person, the baseline blood-pressure data of the person, the baseline pulse-oximetry data of the person, the baseline accelerometer data of the person, or the baseline self-reported mood data of the person;

    analyzing, by one or more of the processors, the first data set and second data set with respect to each other and with respect to the stress model;

    determining, by one or more of the processors, a current stress factor for the stressor with respect to the person based on the analysis of the first data set and second data set with respect to each other and with respect to the stress model; and

    transmitting, by one or more of the processors, a warning to a designated computing system referencing the current stress factor if the current stress factor deviates from a set of control parameters.

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