System for Continuous cardiac pathology detection and characterization
First Claim
1. A system for heart performance characterization and abnormality detection, comprising:
- an interface for receiving sampled data representing an electrical signal indicating electrical activity of a patient heart over at least one heart beat cycle;
a signal processor for calculating,a first signal characteristic value comprising a first fractal dimension value derived from said sampled data over at least a portion of a heart beat cycle,a second signal characteristic value representing a computed derivative of said first fractal dimension value anda ratio of the first and second signal characteristic values;
a comparator for comparing the calculated ratio with a threshold value to provide a comparison indicator; and
a patient monitor for in response to said comparison indicator indicating the calculated signal characteristic value exceeds the threshold value, generating an alert message associated with the threshold.
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Abstract
A system determines fractal values, a nonlinear fractal ratio and fractal data patterns in a heart and maps determined fractal values to medical conditions. A system for heart performance characterization and abnormality detection includes an interface for receiving sampled data representing an electrical signal indicating electrical activity of a patient heart over at least one heart beat cycle. A signal processor calculates, a first signal characteristic value comprising a first fractal dimension value derived from the sampled data over at least a portion of a heart beat cycle, a second signal characteristic value representing a computed derivative of the first fractal dimension value and a ratio of the first and second signal characteristic values. A comparator compares the calculated ratio with a threshold value to provide a comparison indicator. A patient monitor, in response to the comparison indicator indicating the calculated signal characteristic value exceeds the threshold value, generates an alert message associated with the threshold.
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Citations
22 Claims
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1. A system for heart performance characterization and abnormality detection, comprising:
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an interface for receiving sampled data representing an electrical signal indicating electrical activity of a patient heart over at least one heart beat cycle; a signal processor for calculating, a first signal characteristic value comprising a first fractal dimension value derived from said sampled data over at least a portion of a heart beat cycle, a second signal characteristic value representing a computed derivative of said first fractal dimension value and a ratio of the first and second signal characteristic values; a comparator for comparing the calculated ratio with a threshold value to provide a comparison indicator; and a patient monitor for in response to said comparison indicator indicating the calculated signal characteristic value exceeds the threshold value, generating an alert message associated with the threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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20. A system for heart performance characterization and abnormality detection, comprising:
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an interface for receiving sampled data representing frequency content of an electrical signal indicating electrical activity of a patient heart over at least one heart beat cycle; a signal processor for calculating, a first signal characteristic value comprising a first fractal dimension value derived from said sampled data over at least a portion of a heart beat cycle, a second signal characteristic value representing a computed derivative of said first fractal dimension value and a ratio of the first and second signal characteristic values; a comparator for comparing the calculated ratio with a threshold value to provide a comparison indicator; and a patient monitor for in response to said comparison indicator indicating the calculated signal characteristic value exceeds the threshold value, generating an alert message associated with the threshold.
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21. A system for heart performance characterization and abnormality detection, comprising:
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an interface for receiving sampled data representing composite time and frequency content of an electrical signal indicating electrical activity of a patient heart over at least one heart beat cycle; a signal processor for calculating, a first signal characteristic value comprising a first fractal dimension value derived from said sampled data over at least a portion of a heart beat cycle, a second signal characteristic value representing a computed derivative of said first fractal dimension value and a ratio of the first and second signal characteristic values; a comparator for comparing the calculated ratio with a threshold value to provide a comparison indicator; and a patient monitor for in response to said comparison indicator indicating the calculated signal characteristic value exceeds the threshold value, generating an alert message associated with the threshold.
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22. A method for heart performance characterization and abnormality detection, comprising the activities of:
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receiving sampled data representing an electrical signal indicating electrical activity of a patient heart over at least one heart beat cycle; calculating, a first signal characteristic value comprising a first fractal dimension value derived from said sampled data over at least a portion of a heart beat cycle, a second signal characteristic value representing a computed derivative of said first fractal dimension value and a ratio of the first and second signal characteristic values; comparing the calculated ratio with a threshold value to provide a comparison indicator; and in response to said comparison indicator indicating the calculated signal characteristic value exceeds the threshold value, generating an alert message associated with the threshold.
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Specification