Cardiac Arrhythmias Analysis of Electrophysiological Signals Based on Symbolic Dynamics
First Claim
1. A method for predicting cardiac arrhythmia, comprisingmonitoring patient data elements, the data elements comprising a data stream;
- performing symbolization of the data stream;
performing a symbolic complexity calculation on the symbolized data;
comparing information obtained from the symbolic complexity calculation to a predetermined threshold; and
providing information to a user if the information obtained from the symbolic complexity calculation exceeds the predetermined threshold.
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Abstract
The disclosed method analyzes cardiac electrophysiological signals, including ECG and internal cardiac electrograms, based on multi-level symbolic complexity calculation and multi-dimensional mapping. The results may be used to objectively identify cardiac disorders, differentiate cardiac arrhythmias, characterize pathological severities, and predict life-threatening events. Multi-level symbolization and calculation of the electrophysiological signal is used provide better reliability and analysis resolution for identifying and characterizing cardiac disorders. Adaptive analysis of the cardiac signal complexity enables calculation efficiency and reliability with high SNR, and with low calculation volume and power consumption. One dimension (time or frequency domain) and multi-dimension symbolic analysis is used to provide more information of cardiac pathology and high risk rhythm transition to doctors.
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Citations
20 Claims
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1. A method for predicting cardiac arrhythmia, comprising
monitoring patient data elements, the data elements comprising a data stream; -
performing symbolization of the data stream; performing a symbolic complexity calculation on the symbolized data; comparing information obtained from the symbolic complexity calculation to a predetermined threshold; and providing information to a user if the information obtained from the symbolic complexity calculation exceeds the predetermined threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system for predicting cardiac arrhythmia, comprising
means for monitoring patient data elements, the data elements comprising a data stream; -
means for performing symbolization of the data stream; means for performing a symbolic complexity calculation on the symbolized data; means for comparing information obtained from the symbolic complexity calculation to a predetermined threshold; and means for providing information to a user if the information obtained from the symbolic complexity calculation exceeds the predetermined threshold. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A machine readable storage device tangibly embodying a series of instructions executable by the machine to perform a series of steps, the steps comprising:
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monitoring patient data elements, the data elements comprising a data stream; performing symbolization of the data stream; performing a symbolic complexity calculation on the symbolized data; comparing information obtained from the symbolic complexity calculation to a predetermined threshold; and providing information to a user if the information obtained from the symbolic complexity calculation exceeds the predetermined threshold. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification