System for cardiac pathology detection and characterization
First Claim
1. A system for heart performance characterization and abnormality detection, comprising:
- an interface for receiving an electrical signal indicating electrical activity of a patient heart over at least one heart beat cycle;
a signal processor for calculating a signal characteristic value comprising a summation of the square of values of amplitude of said electrical signal relative to a zero voltage baseline of said electrical signal over at least a portion of a heart beat cycle;
a comparator for comparing the calculated signal characteristic value 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 improves characterization and diagnosis of cardiac electrophysiological activities by analyzing and characterizing cardiac function signals (including surface ECG signals and intra-cardiac electrograms) based on cardiac electrophysiological energy mode and pattern identification and mapping. The system accurately determines a time stamp, location and severity of cardiac pathology and clinical events by calculating a cardiac signal energy mode and energy variation and distribution. The system identifies cardiac disorders, differentiates cardiac arrhythmias, characterizes pathological severity, predicts life-threatening events, and supports evaluation of administration of drugs.
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Citations
24 Claims
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1. A system for heart performance characterization and abnormality detection, comprising:
- an interface for receiving an electrical signal indicating electrical activity of a patient heart over at least one heart beat cycle;
a signal processor for calculating a signal characteristic value comprising a summation of the square of values of amplitude of said electrical signal relative to a zero voltage baseline of said electrical signal over at least a portion of a heart beat cycle;
a comparator for comparing the calculated signal characteristic value 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, 20, 21)
- an interface for receiving an electrical signal indicating electrical activity of a patient heart over at least one heart beat cycle;
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22. A system for heart performance characterization and abnormality detection, comprising:
- an interface for receiving an electrical signal indicating electrical activity of a patient heart over at least one heart beat cycle;
a signal processor for calculating a signal characteristic value as a function of a difference between, (a) a summation of the square of values of amplitude of said electrical signal relative to a zero voltage baseline of said electrical signal over a positive portion of a heart beat cycle and (b) a summation of the square of values of amplitude of said electrical signal relative to said baseline over a negative portion of a heart beat cycle;
a comparator for comparing the calculated signal characteristic value 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 (23)
- an interface for receiving an electrical signal indicating electrical activity of a patient heart over at least one heart beat cycle;
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24. A method for heart performance characterization and abnormality detection, comprising the activities of:
- receiving an electrical signal indicating electrical activity of a patient heart over at least one heart beat cycle;
calculating a signal characteristic value comprising a summation of the square of values of amplitude of said electrical signal relative to a substantially zero voltage baseline of said electrical signal over at least a portion of a heart beat cycle;
comparing the calculated signal characteristic value 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.
- receiving an electrical signal indicating electrical activity of a patient heart over at least one heart beat cycle;
Specification