Diagnosing cardiac health utilizing parameter trend analysis
First Claim
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1. A method comprising:
- obtaining, from a patient, data associated with at least one cardiac-related parameter related to the patient'"'"'s cardiac health, the data corresponding to numerous data samples obtained over first and second periods of time;
deriving a first trend of the parameter for the first period of time;
deriving an extrapolated trend, based on the first trend, for the second period of time;
deriving a second trend of the parameter during the second period of time;
processing the extrapolated trend and the second trend to determine whether the first trend continues for the second period or the second trend replaces the first trend for the second period; and
diagnosing a change in the patient'"'"'s cardiac health when the second trend replaces the first trend.
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Abstract
Diagnosing a patient'"'"'s cardiac health through the use of parameter change analysis involves a system that includes an implantable cardiac device to sense a parameter related to a patient'"'"'s heart. The system further includes a parameter change detection sub-system configured to derive a trend of the parameter over time and to detect changes to the trend. The trend and detected changes can then be used to diagnose changes in the patient'"'"'s cardiac health. Results of the diagnosis are stored and presented to a care physician.
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Citations
22 Claims
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1. A method comprising:
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obtaining, from a patient, data associated with at least one cardiac-related parameter related to the patient'"'"'s cardiac health, the data corresponding to numerous data samples obtained over first and second periods of time; deriving a first trend of the parameter for the first period of time; deriving an extrapolated trend, based on the first trend, for the second period of time; deriving a second trend of the parameter during the second period of time; processing the extrapolated trend and the second trend to determine whether the first trend continues for the second period or the second trend replaces the first trend for the second period; and diagnosing a change in the patient'"'"'s cardiac health when the second trend replaces the first trend. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A system comprising:
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an implantable cardiac device to sense a parameter related to a patient'"'"'s cardiac health; and a parameter change detection sub-system configured to derive a first trend of the parameter for a first period of time, derive an extrapolated trend of the parameter for a subsequent period of time, wherein the extrapolated trend is based on the first trend, derive a second trend of the parameter for the subsequent period of time, process the extrapolated trend and the second trend to determine whether the first trend continues for the subsequent period or the second trend replaces the first trend for the subsequent period. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. An implantable cardiac device comprising:
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a memory to store at least one heart-related parameter from a patient over a first period of time and a second period of time; a processing unit to process the parameter using a parameter change algorithm to derive a first trend of the parameter for the first period of time, derive an extrapolated trend of the parameter for the second period of time, wherein the extrapolated trend is based on the first trend, derive a second trend of the parameter for the second period of time, process the extrapolated trend and the second trend to determine whether the first trend continues for the second period or the second trend replaces the first trend for the second period. - View Dependent Claims (16, 17)
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18. A system comprising:
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storage means for storing a parameter related to a patient'"'"'s cardiac health over a first period of time and a second period of time; and means for detecting a trend change in the parameter as an indication of a change in the patient'"'"'s cardiac health by deriving a first trend of the parameter for the first period of time, deriving an extrapolated trend of the parameter for the second period of time, wherein the extrapolated trend is based on the first trend, deriving a second trend of the parameter for the second period of time, processing the extrapolated trend and the second trend to determine whether the first trend continues for the second period or the second trend replaces the first trend for the second period. - View Dependent Claims (19, 20, 21, 22)
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Specification