Method and system for detecting acute myocardial infarction
First Claim
1. A method for detecting an occurrence of Acute Myocardial Infarction on the basis of a patient'"'"'s electrocardiographic waveform data, said electrocardiographic waveform data including at least one heartbeat waveform and wherein said at least one heartbeat waveform comprises at least one of P, Q, R, S, and T component waves and wherein said at least one heartbeat waveform can be partitioned to form an ST segment, even when said patient has an underlying heart condition which mimics standard criteria for detecting Acute Myocardial Infarction, said method comprising the steps of:
- obtaining one or more electrocardiographic leads having said patient'"'"'s electrocardiographic waveform data;
determining whether or not at least one predetermined component wave is present within each successive heartbeat waveform appearing within each electrocardiographic lead;
in response to said determining step, calculating at least one wave amplitude ratio, wherein said wave amplitude ratio is a ratio of an ST segment to said at least one predetermined component wave, for each electrocardiographic lead in which said each successive heartbeat waveform appears; and
in response to said calculated at least one wave amplitude ratio for each electrocardiographic lead in which said each successive heartbeat waveform appears meeting predetermined criteria, indicating an occurrence of Acute Myocardial Infarction.
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Abstract
A method and system for determining Acute Myocardial Infarction. The method and system work by determining whether or not at least one pre-specified component wave is present within each successive heartbeat waveform (e.g. the S wave component of the QRSTU waveform) appearing within each electrocardiographic lead. After it has been determined whether or not the pre-specified component wave is present within the heartbeat waveforms under consideration (each lead will generally have some representation of each successive heartbeat waveform present within it), a wave amplitude ratio (e.g. the ST complex amplitude divided by the S wave component amplitude at some specified instant in time) is calculated. Thus, for each successive heartbeat waveform there will generally be at least one wave amplitude ratio calculated for each electrocardiographic lead, since the same heartbeat waveform generally appears, in some form, within each electrocardiographic lead. Finally, the calculated wave amplitude ratios, which are generally calculated on each lead that every successive heartbeat waveform, are compared to predetermined criteria (e.g. traversing a classification tree), and on the basis of this comparison it is indicated whether Acute Myocardial Infarction is occurring.
89 Citations
8 Claims
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1. A method for detecting an occurrence of Acute Myocardial Infarction on the basis of a patient'"'"'s electrocardiographic waveform data, said electrocardiographic waveform data including at least one heartbeat waveform and wherein said at least one heartbeat waveform comprises at least one of P, Q, R, S, and T component waves and wherein said at least one heartbeat waveform can be partitioned to form an ST segment, even when said patient has an underlying heart condition which mimics standard criteria for detecting Acute Myocardial Infarction, said method comprising the steps of:
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obtaining one or more electrocardiographic leads having said patient'"'"'s electrocardiographic waveform data; determining whether or not at least one predetermined component wave is present within each successive heartbeat waveform appearing within each electrocardiographic lead; in response to said determining step, calculating at least one wave amplitude ratio, wherein said wave amplitude ratio is a ratio of an ST segment to said at least one predetermined component wave, for each electrocardiographic lead in which said each successive heartbeat waveform appears; and in response to said calculated at least one wave amplitude ratio for each electrocardiographic lead in which said each successive heartbeat waveform appears meeting predetermined criteria, indicating an occurrence of Acute Myocardial Infarction. - View Dependent Claims (2, 3, 4)
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5. A system for detecting an occurrence of Acute Myocardial Infarction on the basis of a patient'"'"'s electrocardiographic waveform data, sad electrocardiographic waveform data including at least one heartbeat waveform and wherein said at least one heartbeat waveform comprises at least one of P, Q, R, S, and T component waves and wherein said at least one heartbeat waveform can be partitioned to form an ST segment, even when said patient has an underlying heart condition which mimics standard criteria for detecting Acute Myocardial Infarction, said system comprising:
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means for obtaining one or more electrocardiographic leads having said patient'"'"'s electrocardiographic waveform data; means for determining whether or not at least one predetermined component wave is present within each successive heartbeat waveform appearing within each electrocardiographic lead; means, responsive to said determining step, for calculating at least one wave amplitude ratio, wherein said wave amplitude ratio is a ratio of an ST segment and said at least one predetermined component wave, for each electrocardiographic lead in which said each successive heartbeat waveform appears; and means, responsive to said calculated at least one wave amplitude ratio for each electrocardiographic lead in which said each successive heartbeat waveform appears meeting predetermined criteria, for indicating an occurrence of Acute Myocardial Infarction. - View Dependent Claims (6, 7, 8)
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Specification