System for ventricular arrhythmia detection and characterization
First Claim
1. A system for heart performance characterization and abnormality detection, comprising:
- an interface for receiving signal data, acquired by one or more sensors, representing oxygen content of blood in a patient vessel over a plurality of heart beat cycles and electrocardiogram (ECG) signal data representing heart activity of the patient;
a signal processor for;
detecting one or more peaks, a valley and a baseline comprising a substantially zero voltage level of the received signal data representing oxygen content of blood, wherein a peak of the signal data representing oxygen content of blood is detected by;
determining a peak in the ECG signal data, wherein the ECG signal data includes a Q wave, an R wave, and a T wave, and wherein the peak is determined from a search among the Q wave, R wave and T wave;
determining windows of the signal data representing oxygen content of blood in which a peak in the signal data representing oxygen content of blood is expected, wherein the peak in the ECG signal data is the basis for the determination of the windows in which the peak in the signal data representing oxygen content of blood is expected;
searching within the windows to identify the peak in the signal data representing the oxygen content of blood;
synchronizing the peak of the signal data representing the oxygen content of blood with the peak in the ECG signal data;
utilizing the synchronized peak of the signal data representing the oxygen content of blood and the peak in the ECG signal data for detection and characterization of cardiac arrhythmia and pathology;
detecting, with a timing detector, a time duration between the synchronized peak of the ECG signal data and peak of the received oxygen content signal data of the patient;
determining signal parameters including at least one of(a) a signal amplitude magnitude between a maximum peak and minimum valley, of the received oxygen content signal data,(b) a signal amplitude magnitude between the maximum peak and the baseline, of the received oxygen content signal data and(c) a signal amplitude magnitude between a second highest maximum peak and minimum valley, of the received oxygen content signal data; and
evaluating a health status of the patient based on the detected time duration between the synchronized peak of the ECG signal data and peak of the received oxygen content signal data of the patient; and
a comparator for comparing a determined signal parameter or a value derived from the determined signal parameter with a threshold value to provide a comparison indicator identifying a medical condition of the patient; and
a patient monitor for in response to said comparison indicator, generating an alert message associated with the threshold value indicating the medical condition of the patient.
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Abstract
A system for heart performance characterization and abnormality detection detects peaks and at least one of, a valley and a baseline comprising a substantially zero voltage level, of received signal data representing oxygen content of blood in a patient vessel over multiple heart beat cycles. The signal processor determines signal parameters including at least one of, (a) a signal amplitude magnitude between a maximum peak and minimum valley, of the received signal data, (b) a signal amplitude magnitude between a maximum peak and a baseline, of the received signal data and (c) a signal amplitude magnitude between a second highest maximum peak and minimum valley, of the received signal data. The system compares a determined signal parameter or value derived from the determined signal parameter, with a threshold value and generates an alert message associated with the threshold, in response to the comparison.
47 Citations
21 Claims
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1. A system for heart performance characterization and abnormality detection, comprising:
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an interface for receiving signal data, acquired by one or more sensors, representing oxygen content of blood in a patient vessel over a plurality of heart beat cycles and electrocardiogram (ECG) signal data representing heart activity of the patient; a signal processor for; detecting one or more peaks, a valley and a baseline comprising a substantially zero voltage level of the received signal data representing oxygen content of blood, wherein a peak of the signal data representing oxygen content of blood is detected by; determining a peak in the ECG signal data, wherein the ECG signal data includes a Q wave, an R wave, and a T wave, and wherein the peak is determined from a search among the Q wave, R wave and T wave; determining windows of the signal data representing oxygen content of blood in which a peak in the signal data representing oxygen content of blood is expected, wherein the peak in the ECG signal data is the basis for the determination of the windows in which the peak in the signal data representing oxygen content of blood is expected; searching within the windows to identify the peak in the signal data representing the oxygen content of blood; synchronizing the peak of the signal data representing the oxygen content of blood with the peak in the ECG signal data; utilizing the synchronized peak of the signal data representing the oxygen content of blood and the peak in the ECG signal data for detection and characterization of cardiac arrhythmia and pathology; detecting, with a timing detector, a time duration between the synchronized peak of the ECG signal data and peak of the received oxygen content signal data of the patient; determining signal parameters including at least one of (a) a signal amplitude magnitude between a maximum peak and minimum valley, of the received oxygen content signal data, (b) a signal amplitude magnitude between the maximum peak and the baseline, of the received oxygen content signal data and (c) a signal amplitude magnitude between a second highest maximum peak and minimum valley, of the received oxygen content signal data; and evaluating a health status of the patient based on the detected time duration between the synchronized peak of the ECG signal data and peak of the received oxygen content signal data of the patient; and a comparator for comparing a determined signal parameter or a value derived from the determined signal parameter with a threshold value to provide a comparison indicator identifying a medical condition of the patient; and a patient monitor for in response to said comparison indicator, generating an alert message associated with the threshold value indicating the medical condition of the patient. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 21)
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20. A method for heart performance characterization and abnormality detection, comprising the activities of:
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receiving signal data, acquired by one or more sensors, representing oxygen content of blood in a patient vessel over a plurality of heart beat cycles and electrocardiogram (ECG) signal data representing heart activity of the patient; detecting one or more peaks, a valley, and a baseline comprising a substantially zero voltage level, of the received signal data, wherein a peak of the signal data representing oxygen content of blood is detected by; determining a peak in the ECG signal data, wherein the ECG signal data includes a Q wave, an R wave, and a T, and wherein the peak is determined from a search among the Q wave, R wave and T wave; determining windows of the signal data representing oxygen content of blood in which a peak in the signal data representing oxygen content of blood is expected, wherein the peak in the ECG signal data is the basis for the determination of the windows in which the peak in the signal data representing oxygen content of blood is expected; searching within the windows to identify the peak in the signal data representing the oxygen content of blood; synchronizing the peak of the signal data representing the oxygen content of blood with the peak in the ECG signal data; utilizing the synchronized peak of the signal data representing the oxygen content of blood and the peak in the EG signal data for detection and characterization of cardiac arrhythmia and pathology; detecting, with a timing detector, a time duration between the synchronized peak of the ECG signal data and peak of the received oxygen content signal data of the patient; determining signal parameters including at least one of, (a) a signal amplitude magnitude between a maximum peak and minimum valley, of the received signal data, (b) a signal amplitude magnitude between a maximum peak and a baseline, of the received signal data and (c) a signal amplitude magnitude between a second highest maximum peak and minimum valley, of the received signal data evaluating a health status of the patient based on the detected time duration between the synchronized peak of the ECG signal data and peak of the received oxygen content signal data of the patient; and in response to comparing a determined signal parameter or a value derived from the determined signal parameter with a threshold value, identifying a medical condition of the patient, and generating an alert message associated with the threshold value indicating the medical condition of the patient.
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Specification