Cardiac pacing response classification using an adaptable classification interval
First Claim
1. A method of forming a classification interval used for sensing a cardiac signal following a pacing pulse to determine a cardiac response to pacing, comprising:
- sensing one or more cardiac signals associated with a type of cardiac pacing response;
determining a variability of a timing of one or more features of the cardiac signals; and
forming the cardiac response classification interval using the timing variability.
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Abstract
Methods and systems involve the formation of a classification interval used for sensing a cardiac signal following a pacing pulse to determine a cardiac response to pacing. One or more cardiac signals associated with a type of cardiac pacing response are sensed. The timing of at least one feature of the cardiac signal may be used to define an initial cardiac response classification interval. The classification interval is adapted based on the variability of the timing of the feature. The classification interval may be adapted using a predetermined number of additional cardiac signals or until a predetermined stability criterion is achieved.
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Citations
20 Claims
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1. A method of forming a classification interval used for sensing a cardiac signal following a pacing pulse to determine a cardiac response to pacing, comprising:
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sensing one or more cardiac signals associated with a type of cardiac pacing response;
determining a variability of a timing of one or more features of the cardiac signals; and
forming the cardiac response classification interval using the timing variability. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A medical system, comprising:
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a pacing circuit configured to deliver pacing pulses to a heart chamber;
a sensing circuit configured to sense cardiac signals associated with the pacing pulses; and
a processor coupled to the sensing circuit, the processor configured to determine a cardiac response classification interval based on a timing variability of a feature of cardiac signals associated with a type of cardiac pacing response, the cardiac response classification interval defining a period of time after a pacing pulse that a cardiac signal is sensed to determine a response to the pacing pulse. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. A system for forming a classification interval used for sensing a cardiac signal following a pacing pulse to determine a response to the pacing pulse, comprising:
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means for sensing cardiac signals associated with a type of cardiac pacing response;
means for determining a variability of a timing of one or more features of the cardiac signals; and
means for forming the cardiac response classification interval using the timing variability. - View Dependent Claims (19, 20)
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Specification