Sensing integrity determination based on cardiovascular pressure
First Claim
1. A method comprising:
- detecting a tachyarrhythmia episode of a heart of a patient, wherein the tachyarrhythmia episode comprises a plurality of detected tachyarrhythmia events;
analyzing a plurality of cardiovascular pressure values, each of the cardiovascular pressure values being associated with a respective one of the detected tachyarrhythmia events, wherein analyzing the plurality of cardiovascular pressure values comprises determining a variability in the plurality of cardiovascular pressure values; and
determining, based on the variability in the plurality of cardiovascular pressure values, whether the detected tachyarrhythmia episode is a false positive detection attributable to electrical noise.
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Abstract
Electrical noise may be discriminated from sensed heart signals based on cardiovascular pressure. A plurality of detected cardiovascular pressure values are respectively associated with a plurality of detected tachyarrhythmia events. In some examples, a variance in the cardiovascular pressure, e.g., above a threshold range, may indicate that the detected tachyarrhythmia events are at least partially attributable to electrical noise. In some examples, stimulation therapy to a heart of a patient may be controlled based on the detection of a tachyarrhythmia episode and a variability in the cardiovascular pressure values that are associated with the tachyarrhythmia episode. In other examples, a sensing integrity indication may be generated upon determining that a tachyarrhythmia episode was associated with a variable cardiovascular pressure.
115 Citations
34 Claims
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1. A method comprising:
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detecting a tachyarrhythmia episode of a heart of a patient, wherein the tachyarrhythmia episode comprises a plurality of detected tachyarrhythmia events; analyzing a plurality of cardiovascular pressure values, each of the cardiovascular pressure values being associated with a respective one of the detected tachyarrhythmia events, wherein analyzing the plurality of cardiovascular pressure values comprises determining a variability in the plurality of cardiovascular pressure values; and determining, based on the variability in the plurality of cardiovascular pressure values, whether the detected tachyarrhythmia episode is a false positive detection attributable to electrical noise. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
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19. A system comprising:
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a pressure sensor configured to generate a signal indicative of cardiovascular pressure within a heart of a patient; and a processor configured to detect a tachyarrhythmia episode of the heart of the patient, wherein the tachyarrhythmia episode comprises a plurality of tachyarrhythmia events, wherein the processor is further configured to analyze a plurality of cardiovascular pressure values based on the signal generated by the pressure sensor by at least determining a variability in the plurality of cardiovascular pressure values, each of the cardiovascular pressure values being associated with a respective one of the tachyarrhythmia events, and wherein the processor is further configured to determine, based on the variability of the plurality of cardiovascular pressure values, whether the detected tachyarrhythmia episode is a false positive detection attributable to electrical noise. - View Dependent Claims (20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30, 31, 32)
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33. A system comprising:
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means for detecting a tachyarrhythmia episode of a heart of a patient, wherein the tachyarrhythmia episode comprises a plurality of detected tachyarrhythmia events; means for analyzing a plurality of cardiovascular pressure values, each of the pressure values being associated with a respective one of the tachyarrhythmia events, wherein the means for analyzing the plurality of cardiovascular pressure values determines a variability in the plurality of cardiovascular pressure values; and means for determining, based on the variability in the plurality of cardiovascular pressure values, whether the detected tachyarrhythmia episode is a false positive detection attributable to electrical noise.
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34. A non-transitory computer-readable medium comprising instructions that cause a programmable processor to:
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detect a tachyarrhythmia episode of a heart of a patient, wherein the tachyarrhythmia episode comprises a plurality of detected tachyarrhythmia events; analyze a plurality of cardiovascular pressure values by at least determining a variability in the plurality of cardiovascular pressure values, each of the pressure values being associated with a respective one of the tachyarrhythmia events; and determine, based on the variability in the plurality of cardiovascular pressure values, whether the detected tachyarrhythmia episode is a false positive detection attributable to electrical noise.
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Specification