System for the diagnosis and monitoring of coronary artery disease, acute coronary syndromes, cardiomyopathy and other cardiac conditions
First Claim
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1. An electrocardiograph system comprising:
- a. means for sensing a plurality of electrocardiograph signals from a patient, the signals comprising cardiac data;
b. means for isolating the QRS interval in each of the plurality of signals;
c. means for detecting a reduced amplitude zone within the QRS interval in each of the plurality of signals relating to cardiac function of a patient, the reduced amplitude zone within the QRS interval comprising RAZ data;
d. means for relating at least two of the detected reduced amplitude zones in accordance with predetermined criteria to develop cardiac diagnoses; and
e. means for displaying the cardiac data and the RAZ data in real-time on a monitor.
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Abstract
Cardiac electrical data are received from a patient, manipulated to determine various useful aspects of the ECG signal, and displayed and stored in a useful form using a computer. The computer monitor displays various useful information, and in particular graphically displays various permutations of reduced amplitude zones and kurtosis that increase the rapidity and accuracy of cardiac diagnoses. New criteria for reduced amplitude zones are defined that enhance the sensitivity and specificity for detecting cardiac abnormalities.
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Citations
22 Claims
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1. An electrocardiograph system comprising:
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a. means for sensing a plurality of electrocardiograph signals from a patient, the signals comprising cardiac data;
b. means for isolating the QRS interval in each of the plurality of signals;
c. means for detecting a reduced amplitude zone within the QRS interval in each of the plurality of signals relating to cardiac function of a patient, the reduced amplitude zone within the QRS interval comprising RAZ data;
d. means for relating at least two of the detected reduced amplitude zones in accordance with predetermined criteria to develop cardiac diagnoses; and
e. means for displaying the cardiac data and the RAZ data in real-time on a monitor. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. An electrocardiograph system comprising:
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a. a plurality of electrodes adapted to be attached to a patient, each of the plurality of electrodes providing an electrocardiogram signal comprising a plurality of heartbeats, the electrocardiogram signal including a QRS interval;
b. an electrocardiogram console adapted to receive the electrocardiogram signals from the electrodes and to sample the electrocardiogram signals at at least the Nyquist rate;
c. a computer coupled to the console to receive the sampled electrocardiogram and to filter the high frequency components from the sampled electrocardiogram, the computer detecting a reduced amplitude zone within the QRS interval in each of the plurality of signals and relating at least two of the detected reduced amplitude zones in accordance with predetermined criteria to formulate cardiac diagnoses; and
d. a monitor to display the cardiac data in real time. - View Dependent Claims (18, 19, 20, 21)
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22. A display for the display of electrocardiographic data comprising:
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a. a plot of at least one real-time low frequency electrocardiogram signal; and
b. a plot of at least one real-time high frequency electrocardiogram signal derived from the at least one real-time low frequency electrocardiogram signal, the plot of the at least one real-time low frequency electrocardiogram signal displayed adjacent the plot of the at least one real-time high frequency electrocardiogram signal.
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Specification