Methods for processing electrocardiac signals having superimposed complexes
First Claim
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1. A method for tracking ectopic beats through template matching, comprising the steps of:
- (a) capturing a first ECG signal in a signal processing unit;
(b) permitting a user to mark a begin point and an end point of the captured first ECG signal;
(c) defining a reference template as being a waveform segment between the marked begin and end points of the first ECG signal;
(d) acquiring data at the signal processing unit; and
(e) using a correlation coefficient calculation on the acquired data to identify a best fit between the reference template and the acquired data.
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Abstract
Computer implemented methods and associated systems are disclosed for processing electrical signals recorded from the heart and, more particularly, for objectively deriving sub-components and comparing signals and their sub-components.
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Citations
49 Claims
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1. A method for tracking ectopic beats through template matching, comprising the steps of:
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(a) capturing a first ECG signal in a signal processing unit;
(b) permitting a user to mark a begin point and an end point of the captured first ECG signal;
(c) defining a reference template as being a waveform segment between the marked begin and end points of the first ECG signal;
(d) acquiring data at the signal processing unit; and
(e) using a correlation coefficient calculation on the acquired data to identify a best fit between the reference template and the acquired data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method for deriving a p-wave signal from a premature atrial contraction (“
- PAC”
) beat to assist a person in diagnosing a heart, comprising the steps of;
(a) selecting a QRS-T segment of a reference ECG signal;
(b) permitting a user to mark a begin point and an end point of the selected segment of the reference ECG signal;
(c) defining a reference template as being a waveform segment between the marked begin and end points of the selected segment of the reference ECG signal;
(d) acquiring the PAC beat at the signal processing unit from multiple leads; and
(e) processing the PAC beat so as to derive the p-wave signal. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
- PAC”
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31. A method for deriving a non-synchronous subcomponent from a first heartbeat signal having a composite waveform which includes a synchronous subcomponent overlapping the non-synchronous subcomponent in order to assist a person in diagnosing a heart, comprising the steps of:
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(a) selecting a synchronous subcomponent of a second heartbeat signal which corresponds to the synchronous subcomponent of the first heartbeat signal;
(b) permitting a user to mark a begin point and an end point of the selected synchronous subcomponent;
(c) defining a reference template as being a waveform segment between the marked begin and end points of the selected synchronous subcomponent;
(d) acquiring the composite waveform of the first heartbeat signal at the signal processing unit from multiple leads; and
(e) processing the composite waveform beat so as to derive the non-synchronous subcomponent. - View Dependent Claims (32, 33, 34, 35, 36, 37, 38, 39, 40, 41, 42, 43, 44, 45, 46, 47, 48, 49)
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Specification