METHODS AND SYSTEMS FOR IDENTIFYING AND USING HEART RATE VARIABILITY AND HEART RATE VARIATION
First Claim
1. An apparatus comprising:
- a data input circuit configured to receive information indicative of a patient heart rate including information about both intrinsic and non-intrinsic patient heart beats;
a memory circuit configured to store information about the patient heart rate over time; and
a processor circuit, coupled to the memory circuit, the processor circuit configured to;
determine a heart rate variation using the stored information about the patient heart rate over time, the determined heart rate variation indicative of a number of both intrinsic and non-intrinsic patient heart beats within a specified heart rate range; and
compute a patient metric using the determined heart rate variation indicative of a number of both the intrinsic and non-intrinsic patient heart beats within the specified heart rate range.
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Accused Products
Abstract
A heart rate variability or heart rate variation can be identified using sensed and/or paced heart beats. One or more patient metrics, such as a variability index or a variation index, can correspond to the identified heart rate variability or heart rate variation. The patient metrics can be used to identify a need for a particular therapy, such as a rate-responsive pacing therapy. The patient metrics can be used to identify patients at an elevated risk of death. Methods and systems to identify therapy indications or at-risk patients are provided. In an example, a patient risk profile can be adjusted, such as in response to an identified patient heart rate variability or heart rate variation. In an example, a rate-responsive pacing mode can be used to adjust the patient risk profile.
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Citations
20 Claims
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1. An apparatus comprising:
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a data input circuit configured to receive information indicative of a patient heart rate including information about both intrinsic and non-intrinsic patient heart beats; a memory circuit configured to store information about the patient heart rate over time; and a processor circuit, coupled to the memory circuit, the processor circuit configured to; determine a heart rate variation using the stored information about the patient heart rate over time, the determined heart rate variation indicative of a number of both intrinsic and non-intrinsic patient heart beats within a specified heart rate range; and compute a patient metric using the determined heart rate variation indicative of a number of both the intrinsic and non-intrinsic patient heart beats within the specified heart rate range. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16)
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17. A method comprising:
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obtaining patient heart rate information including information about both intrinsic and non-intrinsic patient heart beats; determining a heart rate variation using the patient heart rate information including information about both intrinsic and non-intrinsic patient heart beats, the heart rate variation indicative of a number of both intrinsic and non-intrinsic patient heart beats within a specified heart rate range; and computing a patient metric using the determined heart rate variation indicative of a number of both intrinsic and non-intrinsic patient heart beats within a specified heart rate range. - View Dependent Claims (18, 19)
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20. An apparatus comprising:
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a data input circuit configured to receive information indicative of a patient heart rate including information about both intrinsic and non-intrinsic patient heart beats; a memory circuit configured to store information about the patient heart rate over time; and a processor circuit, coupled to the memory circuit, the processor circuit configured to; determine a heart rate variation using the stored information about the patient heart rate over time, the determined heart rate variation indicative of a number of both intrinsic and non-intrinsic patient heart beats within a specified heart rate range; and compute a predictive patient mortality indication using the determined heart rate variation, including identifying a lesser patient mortality rate for the patient when the heart rate variation is at a first heart rate variation value, and identifying a greater patient mortality rate for the patient when the heart rate variation is at a second heart rate variation value that is less than the first heart rate variation value.
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Specification