Arrhythmia classification and therapy selection
First Claim
1. A method for delivering cardiac therapy to a patient, comprising:
- associating one or more cardiac therapies respectively with one or more of a plurality of types of cardiac arrhythmia;
detecting cardiac beats of an arrhythmic episode;
comparing a morphology of each cardiac beat to a plurality of representative beat morphologies respectively associated with the plurality of types of cardiac arrhythmia;
classifying the arrhythmic episode as a particular type of cardiac arrhythmia if the morphologies of the cardiac beats are consistent with a representative beat morphology of the particular type of cardiac arrhythmia; and
delivering one or more particular therapies associated with the particular type of cardiac arrhythmia if the arrhythmic episode is classified as the particular type of cardiac arrhythmia;
wherein delivering the one or more particular therapies comprises delivering the one or more particular therapies in a selected order; and
wherein delivering the one or more particular therapies in the selected order comprises delivering the one or more particular therapies based on a history of effectiveness of the one or more particular therapies.
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Abstract
Different types of cardiac arrhythmia are classified based on the morphology of the arrhythmic beats. Cardiac beats associated with an arrhythmic episode are compared to a plurality of representative beat morphologies, each representative beat morphology characterizing a type of arrhythmia of the heart. An arrhythmic episode may be classified as a particular type of arrhythmia if the morphology of the arrhythmic cardiac beats matches a representative beat morphology characterizing the particular type of arrhythmia. An appropriate therapy for the particular type of arrhythmia may be selected based on the arrhythmia classification. A particular type of arrhythmia may be associated with one or more therapies used to treat the arrhythmia. The therapy used to treat the arrhythmia may comprise a therapy identified as a previously successful therapy.
155 Citations
16 Claims
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1. A method for delivering cardiac therapy to a patient, comprising:
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associating one or more cardiac therapies respectively with one or more of a plurality of types of cardiac arrhythmia; detecting cardiac beats of an arrhythmic episode; comparing a morphology of each cardiac beat to a plurality of representative beat morphologies respectively associated with the plurality of types of cardiac arrhythmia; classifying the arrhythmic episode as a particular type of cardiac arrhythmia if the morphologies of the cardiac beats are consistent with a representative beat morphology of the particular type of cardiac arrhythmia; and delivering one or more particular therapies associated with the particular type of cardiac arrhythmia if the arrhythmic episode is classified as the particular type of cardiac arrhythmia; wherein delivering the one or more particular therapies comprises delivering the one or more particular therapies in a selected order; and wherein delivering the one or more particular therapies in the selected order comprises delivering the one or more particular therapies based on a history of effectiveness of the one or more particular therapies. - View Dependent Claims (2, 3, 4)
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5. A method for delivering cardiac therapy to a patient, comprising:
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associating one or more cardiac therapies respectively with one or more of a plurality of types of cardiac arrhythmia; detecting cardiac beats of an arrhythmic episode; comparing a morphology of each cardiac beat to a plurality of representative beat morphologies respectively associated with the plurality of types of cardiac arrhythmia; classifying the arrhythmic episode as a particular type of cardiac arrhythmia if the morphologies of the cardiac beats are consistent with a representative beat morphology of the particular type of cardiac arrhythmia; delivering one or more particular therapies associated with the particular type of cardiac arrhythmia if the arrhythmic episode is classified as the particular type of cardiac arrhythmia; classifying the arrhythmic episode as an unknown type of cardiac arrhythmia if the morphologies of the cardiac beats are not consistent with any of the plurality of representative beat morphologies; attempting to acquire a new representative beat morphology associated with the unknown type of cardiac arrhythmia; associating the new representative beat morphology with a new type of cardiac arrhythmia if the new representative beat morphology is acquired; delivering one or more selected therapies to terminate the new type of cardiac arrhythmia; determining if a particular one of the selected therapies is successful; and associating the successful therapy with the new type of cardiac arrhythmia. - View Dependent Claims (6, 7)
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8. A cardiac therapy system, comprising:
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a sensor system comprising electrodes for electrically coupling to a heart, the sensor system configured to detect cardiac beats of an arrhythmic episode of the heart; an arrhythmia classification processor coupled to the sensor system, the arrhythmia classification processor configured to compare a morphology of each of the detected cardiac beats to a plurality of representative beat morphologies respectively associated with a plurality of types of arrhythmia and classify the arrhythmic episode as a particular type of arrhythmia if the morphologies of the detected cardiac beats are consistent with a representative beat morphology of the particular type of arrhythmia; and a therapy unit coupled to the arrhythmia classification processor, the therapy unit configured to associate one or more cardiac therapies respectively with the one or more types of arrhythmia and deliver one or more particular therapies associated with the particular type of arrhythmia if the cardiac beats are characterized as the particular type of arrhythmia; wherein the arrhythmia classification processor is further configured to; classify the arrhythmic episode as an unknown type of arrhythmia if the morphologies of the cardiac beats are not consistent with any of the plurality of representative beat morphologies; attempt to acquire a representative beat morphology associated with the unknown type of arrhythmia; associate the representative beat morphology with a new type of arrhythmia if the representative beat morphology is acquired; and classify the arrhythmic episode as the new type of arrhythmia if the representative beat morphology is acquired; and wherein the therapy unit is configured to; deliver one or more selected therapies to terminate the new type of arrhythmia; and determine whether a particular one of the selected therapies is successful, and if a particular one is successful, associate the successful therapy with the new type of arrhythmia. - View Dependent Claims (9, 10, 11, 12, 13)
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14. A system for delivering cardiac therapy to a patient, comprising:
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means for associating one or more cardiac therapies respectively with one or more types of arrhythmia; means for detecting cardiac beats associated with an arrhythmic episode of one or more heart chambers; means for comparing a morphology of each cardiac beat to plurality of representative beat morphologies respectively associated with the plurality of types of arrhythmia; means for classifying the arrhythmic episode as a particular type of arrhythmia if the morphologies of the cardiac beats are consistent with a representative beat morphology of the particular type of arrhythmia; means for delivering one or more particular therapies associated with the particular type of arrhythmia if the arrhythmic episode is classified as the particular type of arrhythmia; means for classifying the arrhythmic episode as an unknown type of arrhythmia if the morphologies of the cardiac beats are not consistent with any of the plurality of representative beat morphologies; means for attempting to acquire a representative beat morphology associated with the unknown type of arrhythmia; means for associating the representative beat morphology with a new type of arrhythmia if the representative beat morphology is acquired; means for classifying the arrhythmic episode as the new type of arrhythmia if the representative beat morphology is acquired; means for delivering one or more selected therapies to terminate the new type of arrhythmia; means for determining whether a particular one of the selected therapies is successful, and if a particular one is successful, associating the successful therapy with the new type of arrhythmia. - View Dependent Claims (15, 16)
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Specification