SYSTEMS AND METHODS FOR DIAGNOSING THE CAUSE OF TREND SHIFTS IN HOME HEALTH DATA
First Claim
1. An automated method for diagnosing the cause of a trend shift in physiological data including the steps of:
- receiving physiological data from a patient under observation, the physiological data comprising data on a plurality of measured physiological parameters;
performing a statistical analysis on a portion of the physiological data to determine a measured shift confidence interval in each of the plurality of physiological parameters;
defining a signature shift for each of the plurality of physiological parameters, the signature shifts for the plurality of physiological parameters indicative of a pre-determined medical condition;
comparing the measured shift confidence interval of each of the plurality of physiological parameters to the signature shift associated with each of the plurality of physiological parameters; and
detecting a change in patient condition based on the comparison between the measured shift confidence interval and the signature shift of each of the plurality of physiological parameters.
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Abstract
A system and method for determining the cause of a trend shift in physiological data received from a patient under observation includes receiving physiological data on a plurality of measured physiological parameters from the patient and performing a statistical analysis on a portion of the physiological data to determine a measured shift over a confidence interval in each of the plurality of physiological parameters. A signature shift is defined for each of the plurality of physiological parameters that is indicative of a pre-determined medical condition and the measured shift confidence interval of each of the plurality of physiological parameters is compared to these signature shifts. From this comparison between the measured shift confidence interval and the signature shift of each of the plurality of physiological parameters, a physiological assessment is formulated.
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Citations
23 Claims
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1. An automated method for diagnosing the cause of a trend shift in physiological data including the steps of:
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receiving physiological data from a patient under observation, the physiological data comprising data on a plurality of measured physiological parameters; performing a statistical analysis on a portion of the physiological data to determine a measured shift confidence interval in each of the plurality of physiological parameters; defining a signature shift for each of the plurality of physiological parameters, the signature shifts for the plurality of physiological parameters indicative of a pre-determined medical condition; comparing the measured shift confidence interval of each of the plurality of physiological parameters to the signature shift associated with each of the plurality of physiological parameters; and detecting a change in patient condition based on the comparison between the measured shift confidence interval and the signature shift of each of the plurality of physiological parameters. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A patient monitoring system comprising:
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a patient monitoring device configured to acquire physiological data from a patient under observation, the physiological data providing a measurement of at least one physiological parameter; and a computer in communication with the patient monitoring device to receive physiological data therefrom, the computer programmed to; receive physiological data from the monitoring device; select an analysis period that includes at least a portion of the received physiological data, the analysis period having a start date and an end date; select data sets from the analysis period near the start date and the end date that have a predetermined size without violating normal scatter; measure a shift confidence interval between the data set near the start date and the data set near the end date using one or more statistical tests; and combine the shift confidence interval with a fuzzy model to achieve a physiological condition assessment, the fuzzy model describing how the mean associated with the at least one physiological parameter shifts when a predetermined physiological condition is present. - View Dependent Claims (9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A computer readable storage medium having a computer program to provide a physiological condition assessment based on trend shifts in physiological data, the computer program comprising a set of instructions that when executed by a computer cause the computer to:
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receive physiological data on a plurality of physiological parameters; determine a trend shift in the plurality of physiological parameters based on a statistical analysis of the physiological data; input the trend shift into a fuzzy model to identify a patient condition; validate the fuzzy model using a plurality of validation cases, the validation cases comprising examples of predetermined patient conditions determined from known shifts in the plurality of physiological parameters; and use an evaluation function to determine how well the fuzzy model differentiates the identified patient condition from a plurality of incorrect patient conditions for the plurality of validation cases. - View Dependent Claims (21, 22, 23)
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Specification