Method and system for characterizing a representative cardiac beat using multiple templates
First Claim
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1. A method of characterizing a patient'"'"'s supraventricular rhythm, comprising:
- providing a plurality of templates;
selectively updating the plurality of templates using a plurality of qualified beats; and
characterizing the patient'"'"'s supraventricular rhythm using a particular template of the plurality of updated templates.
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Abstract
The present invention provides a method and system for characterizing one beat of a patient'"'"'s supraventricular rhythm. A plurality of templates is provided and updated using a plurality of qualified beats. Updating occurs by temporally aligning the shock channel waveforms of the template beats using rate channel fiducial points. The template beats are combined by point-by-point addition of the shock channel waveforms. The resultant updated template characterizes one of the patient'"'"'s supraventricular conducted cardiac beats.
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Citations
59 Claims
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1. A method of characterizing a patient'"'"'s supraventricular rhythm, comprising:
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providing a plurality of templates;
selectively updating the plurality of templates using a plurality of qualified beats; and
characterizing the patient'"'"'s supraventricular rhythm using a particular template of the plurality of updated templates. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method of characterizing a patient'"'"'s supraventricular rhythm, comprising:
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providing a first template and a second template;
detecting qualified beats;
updating the first template using qualified beats correlated to the first template;
updating the second template using qualified beats correlated to the second template;
counting a first number of correlated beats associated with the first updated template;
counting a second number of correlated beats associated with the second updated template;
storing the first updated template as a current template if the first number of correlated beats reaches a predetermined count prior to the second number of correlated beats reaching the predetermined count; and
storing the second updated template as a current template if the second number of correlated beats reaches the predetermined count prior to the first number of correlated beats reaching the predetermined count, the current template representing one beat of the patient'"'"'s supraventricular conducted beats. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26)
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27. A body implantable system for characterizing a patient'"'"'s supraventricular rhythm, comprising:
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a lead system, the lead system comprising electrodes and extending into a heart;
a detector system, coupled to the lead system, that detects rate channel signals and shock channel signals sensed by the lead system electrodes; and
a control system coupled to the detector system, wherein the control system provides a plurality of templates, selectively updates the plurality of templates using a plurality of qualified beats, and characterizes a patient'"'"'s supraventricular rhythm using a particular template of the plurality of updated templates. - View Dependent Claims (28, 29, 30, 31, 32, 33, 34, 35, 36, 37, 38)
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39. A body implantable system for characterizing a patient'"'"'s supraventricular rhythm, comprising:
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a lead system, the lead system comprising electrodes and extending into a heart;
a detector system, coupled to the lead system, that detects rate channel signals and shock channel signals;
a control system coupled to the detector system, wherein the control system provides a first template and a second template, updates the first template using qualified beats correlated to the first template;
updates the second template using qualified beats correlated to the second template;
counts a first number of correlated beats associated with the first updated template;
counts a second number of correlated beats associated with the second updated template;
stores the first updated template as a current template if the first number of correlated beats reaches a predetermined count prior to the second number of correlated beats reaching the predetermined count; and
stores the second updated template as a current template if the second number of correlated beats reaches the predetermined count prior to the first number of correlated beats reaching the predetermined count, the current template representing one beat of the patient'"'"'s supraventricular conducted beats. - View Dependent Claims (40, 41, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 52, 53, 54, 55, 56, 57)
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58. A system for characterizing a patient'"'"'s supraventricular rhythm, comprising:
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means for providing a plurality of templates;
means for selectively updating the plurality of templates using a plurality of qualified beats; and
means for characterizing the patient'"'"'s supraventricular rhythm using a particular template of the plurality of updated templates.
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59. A system of characterizing a patient'"'"'s supraventricular rhythm, comprising:
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means for providing a first template and a second template;
means for detecting qualified beats;
means for updating the first template using qualified beats correlated to the first template;
means for updating the second template using qualified beats correlated to the second template;
means for counting a first number of correlated beats associated with the first updated template;
means for counting a second number of correlated beats associated with the second updated template;
means for storing the first updated template as a current template if the first number of correlated beats reaches a predetermined count prior to the second number of correlated beats reaching the predetermined count; and
means for storing the second updated template as a current template if the second number of correlated beats reaches the predetermined count prior to the first number of correlated beats reaching the predetermined count, the current template representing one beat of the patient'"'"'s supraventricular conducted beats.
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Specification