Non-invasive method and system for characterizing cardiovascular systems for all-cause mortality and sudden cardiac death risk
First Claim
1. A method for quantifying the risk of serious arrhythmias, sudden cardiac death, or other modes of death and all-cause mortality events in mammals, comprising:
- obtaining, by one or more processors, an electrophysiological data set associated with a measurement of an electrophysiological signal having been acquired from a noninvasive system configured to measure electrical properties of a heart over at least one heart beat cycle; and
processing the obtained electrophysiological data set to detect at least one patterns that predict a risk of sudden cardiac death, other modes of death, and all-cause mortality, the processing being performed without the use of data from other measuring devices or invasive procedures, the obtained electrophysiological data set including at least 12 dimensional dynamical phase space densities,wherein the at least one risk of sudden cardiac death, other modes of death, and all-cause mortality, or values associated therewith, is presented for clinical utility.
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Abstract
Methods and systems for evaluating the electrical activity of the heart to identify novel ECG patterns closely linked to the subsequent development of serious heart rhythm disturbances and fatal cardiac events. Two approaches are describe, for example a model-based analysis and space-time analysis, which are used to study the dynamical and geometrical properties of the ECG data. In the first a model is derived using a modified Matching Pursuit (MMP) algorithm. Various metrics and subspaces are extracted to characterize the risk for serious heart rhythm disturbances, sudden cardiac death, other modes of death, and all-cause mortality linked to different electrical abnormalities of the heart. In the second method, space-time domain is divided into a number of regions (e.g., 12 regions), the density of the ECG signal is computed in each region and input to a learning algorithm to associate them with these events.
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Citations
20 Claims
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1. A method for quantifying the risk of serious arrhythmias, sudden cardiac death, or other modes of death and all-cause mortality events in mammals, comprising:
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obtaining, by one or more processors, an electrophysiological data set associated with a measurement of an electrophysiological signal having been acquired from a noninvasive system configured to measure electrical properties of a heart over at least one heart beat cycle; and processing the obtained electrophysiological data set to detect at least one patterns that predict a risk of sudden cardiac death, other modes of death, and all-cause mortality, the processing being performed without the use of data from other measuring devices or invasive procedures, the obtained electrophysiological data set including at least 12 dimensional dynamical phase space densities, wherein the at least one risk of sudden cardiac death, other modes of death, and all-cause mortality, or values associated therewith, is presented for clinical utility. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A system for quantifying the risk of serious arrhythmias, sudden cardiac death, or other modes of death and all-cause mortality events in mammals, comprising:
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a non-invasive system configured to measure electrical properties of a heart over at least one heart beat cycle as an electrophysiological data set, wherein the electrophysiological data set is processed to detect patterns that predict a risk of sudden cardiac death, other modes of death, and all-cause mortality, the processing being performed without the use of data from other measuring devices or invasive procedures, the obtained electrophysiological data set including at least 12 dimensional dynamical phase space densities, and wherein the at least one risk of sudden cardiac death, other modes of death, and all-cause mortality, or values associated therewith, is presented for clinical utility. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A non-transitory computer readable medium comprising instructions stored thereon, wherein execution of the instructions by one or more processors, cause the one or more processors to:
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obtain an electrophysiological data set associated with a measurement of an electrophysiological signal having been acquired from a noninvasive system configured to measure electrical properties of a heart over at least one heart beat cycle; and process the obtained electrophysiological data set to detect patterns that predict a risk of sudden cardiac death, other modes of death, and all-cause mortality, the processing being performed without the use of data from other measuring devices or invasive procedures, the obtained electrophysiological data set including at least 12 dimensional dynamical phase space densities, wherein the at least one risk of sudden cardiac death, other modes of death, and all-cause mortality, or values associated therewith, is presented for clinical utility.
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Specification