Cardiac Signal Template Generation Using Waveform Clustering
First Claim
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1. A method of operating an implantable device to characterize a cardiac response to pacing, comprising:
- delivering pacing pulses to a heart sufficient in energy to effect capture;
sensing cardiac signals respectively following delivery of the pacing pulses;
extracting one more features from the cardiac signals;
clustering the features to define a plurality of clusters;
identifying one or more predominant clusters of the plurality of clusters and one or more less predominant clusters of the plurality of clusters; and
forming a captured response template using the predominant clusters.
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Abstract
Cardiac devices and methods using cardiac waveform clustering for template generation are described. A method of characterizing a cardiac response involves delivering pacing pulses to heart, the pulses having an energy greater than a capture threshold. Cardiac signals are sensed following the pulses. Cardiac signal characteristics, waveforms, and/or features are clustered into a plurality of clusters. A cardiac response template is formed using one or more of the plurality of clusters.
109 Citations
20 Claims
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1. A method of operating an implantable device to characterize a cardiac response to pacing, comprising:
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delivering pacing pulses to a heart sufficient in energy to effect capture; sensing cardiac signals respectively following delivery of the pacing pulses; extracting one more features from the cardiac signals; clustering the features to define a plurality of clusters; identifying one or more predominant clusters of the plurality of clusters and one or more less predominant clusters of the plurality of clusters; and forming a captured response template using the predominant clusters. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A method of operating an implantable device to determine a template used to characterize a cardiac response to pacing, comprising:
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delivering pacing pulses to a heart sufficient in energy to effect capture; sensing cardiac signals respectively following delivery of the pacing pulses; extracting peak values from the cardiac signals; clustering the peak values to define a plurality of clusters; identifying one or more predominant clusters of the plurality of clusters and one or more less predominant clusters of the plurality of clusters; and forming a captured response template using the predominant clusters. - View Dependent Claims (17, 18, 19, 20)
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Specification