Systems and methods for assessing measurements in physiological monitoring devices
First Claim
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1. A method for initiating a recalibration of a measurement device, comprising:
- receiving a first sensor signal representative of a physiological process;
calculating a skewness value representative of a skewness of the received first signal;
generating, an electronic recalibration signal based at least in part on a comparison of the skewness value and at least one reference skewness value; and
transmitting the electronic recalibration signal to a measurement device to initiate a recalibration of the measurement device.
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Abstract
Methods and systems are provided for deriving and analyzing shape metrics, including skewness metrics, from physiological signals and their derivatives to determine measurement quality, patient status and operating conditions of a physiological measurement device. Such determinations may be used for any number of functions, including indicating to a patient or care provider that the measurement quality is low or unacceptable, alerting a patient or care provider to a change in patient status, triggering or delaying a recalibration of a monitoring device, and adjusting the operating parameters of a monitoring system.
295 Citations
20 Claims
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1. A method for initiating a recalibration of a measurement device, comprising:
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receiving a first sensor signal representative of a physiological process; calculating a skewness value representative of a skewness of the received first signal; generating, an electronic recalibration signal based at least in part on a comparison of the skewness value and at least one reference skewness value; and transmitting the electronic recalibration signal to a measurement device to initiate a recalibration of the measurement device. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system for initiating a recalibration of a measurement device, comprising:
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at least one memory device, storing at least one reference skewness value; a calibration device, configured to initiate a recalibration of the measurement device in response to a recalibration signal; a processor, communicably coupled to the at least one memory device and to the calibration device configured to receive a first sensor signal representative of a physiological process, the processor further configured to; calculate a skewness value representative of a skewness of the received first signal; retrieve the at least one reference skewness value from the at least one memory device; generate a recalibration signal based at least in part on a comparison of the skewness value and the at least one reference skewness value; and transmit the recalibration signal to the calibration device. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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19. A non-transitory computer-readable medium for use in initiating a recalibration of a physiological measurement, the computer-readable medium having computer program instructions recorded thereon for causing processing equipment to:
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receive a first sensor signal representative of a physiological process; calculate a skewness value representative of a skewness of the received first signal; generate, an electronic recalibration signal based at least in part on a comparison of the skewness value and at least one reference skewness value; and transmit the electronic recalibration signal to a measurement device to initiate a recalibration of the measurement device. - View Dependent Claims (20)
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Specification