Non-captured intrinsic discrimination in cardiac pacing response classification
First Claim
1. A method of classifying a cardiac response to a pacing pulse, comprising:
- delivering the pacing pulse to a heart;
sensing a cardiac signal following delivery of the pacing pulse;
comparing one or more characteristics of the cardiac signal to one or more expected cardiac signal characteristics associated with a non-captured response with intrinsic activity; and
classifying the cardiac response to the pacing pulse as the noncaptured response with intrinsic activation based on the comparison.
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Abstract
Cardiac devices and methods discriminate non-captured intrinsic beats during evoked response detection and classification by comparing the features of a post-pace cardiac signal with expected features associated with a non-captured response with intrinsic activation. Detection of a non-captured response with intrinsic activation may be based on the peak amplitude and timing of the cardiac signal. The methods may be used to discriminate between a fusion or capture beat and a non-captured intrinsic beat. Discriminating between possible cardiac responses to the pacing pulse may be useful, for example, during automatic capture verification and/or a capture threshold test.
120 Citations
22 Claims
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1. A method of classifying a cardiac response to a pacing pulse, comprising:
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delivering the pacing pulse to a heart;
sensing a cardiac signal following delivery of the pacing pulse;
comparing one or more characteristics of the cardiac signal to one or more expected cardiac signal characteristics associated with a non-captured response with intrinsic activity; and
classifying the cardiac response to the pacing pulse as the noncaptured response with intrinsic activation based on the comparison. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A system for classifying a cardiac response to a pacing pulse, comprising:
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a sensor system, comprising a plurality of electrodes electrically coupled to a heart, the sensor system configured to sense a cardiac signal following delivery of the pacing pulse; and
a processor coupled to the sensing system, the processor configured to compare one or more characteristics of the cardiac signal to one or more expected cardiac signal characteristics associated with a non-captured intrinsic beat, and to classify the cardiac response to the pacing pulse as the non-captured intrinsic beat based on the comparison. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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21. A cardiac device, comprising:
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a pulse generator configured to deliver a pacing pulse to a heart;
a sensing system configured to sense a cardiac signal following delivery of the pacing pulse;
means for comparing one or more features of the cardiac signal to one or more expected features associated with a non-captured response with intrinsic activation; and
means for classifying the cardiac response to the pacing pulse as the non-captured response with intrinsic activation based on the comparison. - View Dependent Claims (22)
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Specification