System and method for improved ischemia and acute myocardial infarction detection
First Claim
1. A method comprising:
- detecting an exercise and recovery episode in a patient using an implantable medical device (IMD);
performing an analysis of heart rate (HR)-ST segment hysteresis over the exercise and recovery episode using the IMD; and
determining whether the patient is experiencing a particular heart-related condition based on the results of the HR-ST segment hysteresis analysis.
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Abstract
A system and method are provided for the detection of a heart-related condition by obtaining information in real-time when a condition is initially identified as potentially occurring. A physical exercise and recovery episode is initially detected from physiological signals sensed in a patient. Once detected, a HR-ST segment deviation hysteresis analysis is performed in an implantable medical device (IMD) from certain physiological signals over portions of the exercise and recovery episode to identify the probability that a certain condition is occurring. Once a desired level of probability that the heart-related condition has been detected exists, data utilized in the analysis can be transmitted remotely for clinical review and confirmation of the device'"'"'s detection of the condition. The patient may be prompted to answer questions related to symptoms that patient is experiencing through an input device in order further confirm the probability that the condition is occurring in the patient.
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Citations
25 Claims
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1. A method comprising:
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detecting an exercise and recovery episode in a patient using an implantable medical device (IMD); performing an analysis of heart rate (HR)-ST segment hysteresis over the exercise and recovery episode using the IMD; and determining whether the patient is experiencing a particular heart-related condition based on the results of the HR-ST segment hysteresis analysis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A system comprising:
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at least one physiological sensor configured to sense a corresponding physiological signal in a patient; a controller configured to derive a corresponding physiological parameter from each sensed signal and to detect an exercise and recovery episode in the patient; and a housing configured for implantation in the patient, wherein the at least one physiological sensor and the controller are included in the housing, and wherein the controller is further configured to; collect ST-segment information from a corresponding physiological sensor; perform an analysis of heart rate (HR)-ST segment hysteresis over the exercise and recovery episode; and determine whether the patient is experiencing a particular heart-related condition based on the results of the HR-ST segment hysteresis analysis. - View Dependent Claims (14, 15, 16, 17, 18)
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19. A system comprising:
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means for detecting an exercise and recovery episode in a patient using an implantable medical device (IMD); means for performing an analysis of heart rate (HR)-ST segment hysteresis over the exercise and recovery episode using the IMD; and means for determining whether the patient is experiencing a particular heart-related condition based on the results of the HR-ST segment hysteresis analysis. - View Dependent Claims (20, 21, 22, 23, 24, 25)
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Specification