Dynamic selection of algorithms for arrhythmia detection
First Claim
1. An apparatus comprising:
- a first implantable sensor configured to produce a first electrical sensor signal representative of cardiac depolarization events of a heart of a subject;
a second implantable sensor configured to produce a second electrical sensor signal representative of hemodynamic function of the heart;
a signal analyzer circuit, communicatively coupled to the first and second implantable sensors, configured to;
detect an arrhythmic event from the first sensor signal; and
calculate hemodynamic stability in response to the arrhythmic event detection using the second sensor signal; and
an arrhythmia discrimination circuit, communicatively coupled to the signal analyzer circuit and the first implantable sensor, configured to;
preselect the plurality of candidate arrhythmia discrimination algorithms from among a set of algorithms implementable by the arrhythmia classification circuit;
classify the detected arrhythmia using each of the candidate arrhythmia discrimination algorithms;
weight the arrhythmia classifications by the candidate algorithms according to the calculated hemodynamic stability;
ultimately classify the detected arrhythmia according to the weights; and
provide the arrhythmia classification to a user or process.
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Abstract
An apparatus comprises a first implantable sensor produces a first electrical sensor signal representative of cardiac depolarization events of a heart of a subject, a second implantable sensor that produces a second electrical sensor signal representative of hemodynamic function of the heart, a signal analyzer circuit, and an arrhythmia discrimination circuit. The signal analyzer circuit detects an arrhythmic event from the first sensor signal and calculates hemodynamic stability in response to the arrhythmic event detection using the second sensor signal. The arrhythmia discrimination circuit selects, according to a calculated hemodynamic stability produced by the signal analyzer circuit, an arrhythmia discrimination algorithm from among a plurality of candidate arrhythmia discrimination algorithms that are implementable by the arrhythmia discrimination circuit, classifies the detected arrhythmia using the selected arrhythmia discrimination algorithm, and provides the arrhythmia classification to a user or process.
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Citations
18 Claims
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1. An apparatus comprising:
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a first implantable sensor configured to produce a first electrical sensor signal representative of cardiac depolarization events of a heart of a subject; a second implantable sensor configured to produce a second electrical sensor signal representative of hemodynamic function of the heart; a signal analyzer circuit, communicatively coupled to the first and second implantable sensors, configured to; detect an arrhythmic event from the first sensor signal; and calculate hemodynamic stability in response to the arrhythmic event detection using the second sensor signal; and an arrhythmia discrimination circuit, communicatively coupled to the signal analyzer circuit and the first implantable sensor, configured to; preselect the plurality of candidate arrhythmia discrimination algorithms from among a set of algorithms implementable by the arrhythmia classification circuit; classify the detected arrhythmia using each of the candidate arrhythmia discrimination algorithms; weight the arrhythmia classifications by the candidate algorithms according to the calculated hemodynamic stability; ultimately classify the detected arrhythmia according to the weights; and provide the arrhythmia classification to a user or process. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method comprising:
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detecting an arrhythmic event of a heart of a subject using an implantable medical device (IMD); monitoring an electrical sensor signal received from an implantable sensor, wherein the electrical sensor signal is representative of hemodynamic function of the heart; calculating hemodynamic stability in response to the arrhythmic event detection using the sensor signal; preselecting a plurality of candidate arrhythmia discrimination algorithms from among a set of algorithms implementable by the IMD; classifying the detected arrhythmia using each of the candidate arrhythmia discrimination algorithms; weighting the classifications by the candidate algorithms according to the calculated hemodynamic stability; selecting the arrhythmia classification of a candidate arrhythmia discrimination algorithm according to the weighting; and providing the arrhythmia classification to a user or process. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18)
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Specification