Method and Apparatus for Arrhythmia Episode Classification
First Claim
1. A method of analyzing an episode stored by an implantable medical device (IMD), comprising:
- retrieving information about a stored episode from an IMD, the stored episode information including an episode metric;
retrieving domain expert information about one or more potential diagnoses and one or more episode metrics; and
applying the domain expert information to the episode metric to determine a likelihood that the stored episode is indicative of a particular potential diagnosis.
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Abstract
Apparatus and methods are provided for analyzing an episode stored by an implantable medical device (IMD) using prior probability and conditional probability information to determine the likelihood of a particular diagnosis for a given stored episode. Certain embodiments include retrieving information about a stored episode from an IMD, including an episode metric, and retrieving domain expert information about potential diagnoses and episode metrics to determine the likelihood that the stored episode was due to a particular potential diagnosis. Certain embodiments also include retrieving patient information including a patient metric, such as patient demographics, or patient history. Certain embodiments of the invention include the ability to automatically or manually update or change the domain expert information.
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Citations
25 Claims
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1. A method of analyzing an episode stored by an implantable medical device (IMD), comprising:
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retrieving information about a stored episode from an IMD, the stored episode information including an episode metric;
retrieving domain expert information about one or more potential diagnoses and one or more episode metrics; and
applying the domain expert information to the episode metric to determine a likelihood that the stored episode is indicative of a particular potential diagnosis. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13)
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14. A computer-readable medium programmed with instructions for performing a method of analyzing an episode stored by an implantable medical device (IMD), the medium comprising instructions for causing a programmable processor to:
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retrieve information about a stored episode from an IMD, the stored episode information including an episode metric;
retrieve domain expert information about one or more potential diagnoses and one or more episode metrics; and
apply the domain expert information to the episode metric to determine a likelihood that the stored episode was due to a particular potential diagnosis. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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21. A system for analyzing episodes stored by an implantable medical device (IMD), the system comprising:
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retrieval means for retrieving stored episodes from an IMD, the stored episodes including one or more episode metrics;
informational retrieval means for retrieving domain expert information about one or more potential diagnoses and one or more episode metrics; and
a processor for determining a likelihood that a given stored episode was due to a particular diagnosis, wherein information retrieval means is adapted to receive domain expert information automatically via a network, and wherein the processor is adapted to determine the likelihood of a particular diagnosis by calculating a posterior probability according to the equation;
P(D1|S1, S2)=P(S1, S2|D1)*[P(D1)/P(S1, S2)],wherein P(S1, S2|D1) is the conditional probability that episode metrics S1 and S2 will both be observed if the diagnosis is known to be D1, and wherein P(D1) and P(S1, S2) are the prior probabilities of D1 occurring, and of both S1 and S2 occurring, respectively. - View Dependent Claims (22, 23, 24, 25)
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Specification