Patent ID: 11857477
Assignee: CERNER INNOVATION, INC.
Field: Medical technology (Instruments)
Classification: CPC A | IPC A

Claim 14:
15. A method for determining a likelihood of a condition for inducing pressure ulcers comprising:
collecting with computer memory or a processor a series of pressure measurements from a measurement device configured to measure pressure from the weight of a human patient, the series of pressure measurements including pressure measurements received during a first time interval and pressure measurements received during one or more previous time intervals;
determining a set of pressure measurement time series including a first time series comprising the pressure measurements received during the first time interval and one or more previous time series corresponding to the pressure measurements received during the one or more previous time intervals;
determining a multi-taper frequency power spectrum utilizing the first time series;
determining a linear regression for each of two piece-wise linear segments of the power spectrum, each of the regressions having a first-order coefficient;
based on the regressions, determining a frequency cut-point where the two piece-wise linear segments join;
comparing the first-order coefficients to characteristic white-, pink-, brown-, and black-noise α values for 1/f* power roll-off with frequency a in a selected range;
based on the comparison, determining a likelihood that the first time period has conditions likely to induce pressure injury; and
initiating an action based on the determined likelihood that the first time period has conditions likely to induce pressure injury.