Methods and systems for trending ST segment changes over time
First Claim
1. A method for trending ischemia burden for a patient, comprising:
- obtaining cardiac data over a period of time;
collecting reference ST segments from the cardiac data;
identifying onset and termination of multiple ischemia episodes based on ST segment variation between the reference ST segments and a measured ST segment within the cardiac data;
analyzing the cardiac data associated with the multiple ischemia episodes to calculate ischemia burden information over the period of time, the ischemia burden information including at least one of;
i) a count of the ischemia episodes over the period of time;
ii) time durations of the ischemia episodes; and
iii) a maximum ST segment variation for each of the multiple ischemia episodes over the period of time;
recording the ischemia burden information; and
presenting the ischemia burden information related to the multiple ischemia episodes as a multi-episode trend over the period of time.
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Accused Products
Abstract
A method and system are provided for trending a coronary burden such as an ischemic burden or acute myocardial infarction (AMI) for a patient. Trending provides obtaining cardiac data over a period of time, identifying the onset and the termination of coronary episodes based on a ST segment variation within the cardiac data, recording coronary burden information, and presenting the coronary burden information to a user. The coronary burden information may include the number of coronary episodes occurring over a period of time, the time duration of the coronary episodes, and the maximum ST segment variations for the coronary episodes that occur over a period of time.
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Citations
22 Claims
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1. A method for trending ischemia burden for a patient, comprising:
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obtaining cardiac data over a period of time; collecting reference ST segments from the cardiac data; identifying onset and termination of multiple ischemia episodes based on ST segment variation between the reference ST segments and a measured ST segment within the cardiac data; analyzing the cardiac data associated with the multiple ischemia episodes to calculate ischemia burden information over the period of time, the ischemia burden information including at least one of; i) a count of the ischemia episodes over the period of time; ii) time durations of the ischemia episodes; and iii) a maximum ST segment variation for each of the multiple ischemia episodes over the period of time; recording the ischemia burden information; and presenting the ischemia burden information related to the multiple ischemia episodes as a multi-episode trend over the period of time. - View Dependent Claims (2, 3, 4, 5, 6, 7, 9, 10, 11)
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8. A method for trending ischemia burden for a patient, comprising:
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obtaining cardiac data over a period of time; collecting reference ST segments from the cardiac data; identifying onset and termination of multiple ischemia episodes based on ST segment variation between the reference ST segments and a measured ST segment within the cardiac data; analyzing the cardiac data associated with the multiple ischemia episodes to calculate ischemia burden information over the period of time, the ischemia burden information including at least one of; i) a count of the ischemia episodes over the period of time; ii) time durations of the ischemia episodes; and iii) a maximum ST segment variation for each of the multiple ischemia episodes over the period of time; recording the ischemia burden information; and presenting the ischemia burden information related to the multiple ischemia episodes as a multi-episode trend over the period of time; wherein the presenting includes displaying a graphical representation, over time, of the ischemic burden information, where the graphical representation has one axis corresponding to time.
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12. A system for trending ischemia burden for a patient, comprising:
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a detector module configured to obtain cardiac data over a period of time, the detection module collecting reference ST segments from the cardiac data; a processor module configured to identify an onset and a termination of multiple ischemia episodes based on ST segment variation between the reference ST segments and a measured ST segment within the cardiac data;
the processor module configured to analyze the cardiac data associated with the multiple ischemia episodes to calculate ischemia burden information over the period of time, the ischemia burden information including at least one of;i) a count of the ischemia episodes over the period of time; ii) time durations of the ischemia episodes; and iii) a maximum ST segment variation for each of the multiple ischemia episodes over the period of time; a memory module configured to record the ischemia burden information; and a display module configured to present the ischemia burden information related to the multiple ischemia episodes as a multi-episode trend over the period of time. - View Dependent Claims (13, 14, 15, 16, 17, 18, 19, 21, 22)
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20. A system for trending ischemia burden for a patient, comprising:
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a detector module configured to obtain cardiac data over a period of time, the detection module collecting reference ST segments from the cardiac data; a processor module configured to identify an onset and a termination of multiple ischemia episodes based on ST segment variation between the reference ST segments and a measured ST segment within the cardiac data;
the processor module configured to analyze the cardiac data associated with the multiple ischemia episodes to calculate ischemia burden information over the period of time, the ischemia burden information including at least one of;i) a count of the ischemia episodes over the period of time; ii) time durations of the ischemia episodes; and iii) a maximum ST segment variation for each of the multiple ischemia episodes over the period of time; a memory module configured to record the ischemia burden information; and a display module configured to present the ischemia burden information related to the multiple ischemia episodes as a multi-episode trend over the period of time, wherein the display module presents a graphical representation, over time, of the ischemia burden information.
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Specification