Multi-sensor patient monitor to detect impending cardiac decompensation
First Claim
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1. A system to detect impending acute cardiac decompensation of a patient, the patient having a skin and an extracellular fluid, the system comprising:
- impedance circuitry to measure, a hydration signal of the patient and a respiration signal of the patient, wherein the hydration signal corresponds to a tissue hydration of the patient; and
a processor system comprising a computer readable memory in communication with the impedance circuitry, wherein the computer readable memory of the processor system embodies instructions to combine the hydration signal and the respiration signal to detect the impending acute cardiac decompensation.
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Abstract
Systems and methods of detecting an impending cardiac decompensation of a patient measure at least two of an electrocardiogram signal of the patient, a hydration signal of the patient, a respiration signal of the patient or an activity signal of the patient. The at least two of the electrocardiogram signal, the hydration signal, the respiration signal or the activity signal are combined with an algorithm to detect the impending cardiac decompensation.
984 Citations
31 Claims
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1. A system to detect impending acute cardiac decompensation of a patient, the patient having a skin and an extracellular fluid, the system comprising:
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impedance circuitry to measure, a hydration signal of the patient and a respiration signal of the patient, wherein the hydration signal corresponds to a tissue hydration of the patient; and a processor system comprising a computer readable memory in communication with the impedance circuitry, wherein the computer readable memory of the processor system embodies instructions to combine the hydration signal and the respiration signal to detect the impending acute cardiac decompensation. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 27)
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26. A system to predict an impending acute cardiac decompensation of a patient having heart failure, the patient having a skin and extracellular fluid, the system comprising:
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circuitry to measure an activity signal of the patient, a hydration signal of the patient and a respiration signal of the patient, the circuitry comprising an accelerometer to measure the activity signal of the patient, the circuitry comprising impedance circuitry to measure the hydration signal of the patient and the respiration signal of the patient based on impedance measurements, the impedance measurements having a single frequency within a range from about 1 kHz to about 10 kHz such that the hydration signal corresponds to a tissue hydration of the patient; and a processor system comprising a computer readable memory in communication with the circuitry, wherein the computer readable memory of the processor system embodies instructions to combine the hydration signal and the respirations signal to predict the impending acute cardiac decompensation, wherein the computer readable memory embodies instructions to determine a baseline hydration value of the patient and compare the baseline hydration value to the hydration signal to determine a change of the hydration signal from the baseline hydration value over a 90 day period and instructions to determine a baseline respiration value of the patient and compare the baseline respiration value to the respiration signal over the 90 day period to determine a change of the respiration signal from the baseline respiration value and wherein the processor system embodies instructions to predict the impending acute cardiac decopmensation based on the change of the hydration signal and the change of the respiration signal.
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28. A system to detect impending acute cardiac decompensation of a patient, the system comprising:
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impedance circuitry to measure a hydration signal of the patient such that the hydration signal corresponds to a tissue hydration of the patient, wherein a respiration signal of the patient is derived from the impedance circuitry; and a processor system in communication with the impedance circuitry, the processor system comprising a computer readable memory storing instructions to detect the impending acute cardiac decompensation based at least in part on the hydration signal of the patient and the respiration signal of the patient. - View Dependent Claims (29, 30, 31)
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Specification