Altering Physiological Signals Based On Patient Movement
First Claim
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1. A system comprising:
- one or more computer processors;
a physiological sensor configured to measure a physiological characteristic of a patient;
a motion sensor configured to capture motion data for the patient, the motion data comprising physical movement of the patient separate from the physiological characteristic of the patient;
one or more computer-readable media having instructions stored thereon that, responsive to execution by the one or more computer processors, perform operations comprising;
determining, based on the captured motion data, the physical movement of the patient;
receiving a physiological signal from the physiological sensor;
synchronizing chronologically the determined physical movement of the patient with the received physiological signal; and
altering the received physiological signal based on the determined physical movement.
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Abstract
This document describes ways in which to alter physiological signals to address corrupt, noisy, or otherwise faulty data. By so doing, accuracy and robustness in sensing and assessing a patient'"'"'s cardiovascular health can be improved. These improved assessments permit better measures of health, such as relevant hemodynamics understood by heart rates, heart rate variability, cardiac arrhythmias, blood pressures, pulse-wave velocities, arterial stiffness, cardiac valve timing, thoracic fluids, ballistocardiogram force, photo-plethysmograms, blood oxygenation, and pressure-volume loops.
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Citations
20 Claims
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1. A system comprising:
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one or more computer processors; a physiological sensor configured to measure a physiological characteristic of a patient; a motion sensor configured to capture motion data for the patient, the motion data comprising physical movement of the patient separate from the physiological characteristic of the patient; one or more computer-readable media having instructions stored thereon that, responsive to execution by the one or more computer processors, perform operations comprising; determining, based on the captured motion data, the physical movement of the patient; receiving a physiological signal from the physiological sensor; synchronizing chronologically the determined physical movement of the patient with the received physiological signal; and altering the received physiological signal based on the determined physical movement. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A computer-implemented method comprising:
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receiving, from a physiological sensor configured to measure a physiological characteristic of a patient, a physiological signal; receiving, from a motion sensor configured to capture motion data for the patient, captured motion data comprising physical movement of the patient separate from the physiological characteristic of the patient; chronologically synchronizing the physical movement for the patient with the received physiological signal for the patient; and altering the received physiological signal based on the physical movement. - View Dependent Claims (14, 15, 16, 17)
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18. A computer-implemented method comprising:
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segmenting a physiological signal for a patient at a time window, the time window matching a physical movement of the patient, the physiological signal sensed by a physiological sensor and the physical movement sensed by a motion sensor, the physical movement separate from a physiological characteristic sensed by the physiological sensor; determining, based on the physical movement of the patient, a quality of the physiological signal in the segment; and responsive to the quality being determined to be a quality indicative of signal corruption, altering, down-weighting, removing, or replacing the segment of the physiological signal. - View Dependent Claims (19, 20)
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Specification