Distinguishing valid and invalid cardiac senses
First Claim
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1. A method comprising:
- sensing an electrical signal with a first electrode;
commencing a timing window;
inhibiting delivery of a pacing therapy by the first electrode subsequent to termination of an escape interval during the timing window; and
recording the electrical signal as an invalid sense when a second electrode fails to sense the electrical signal in the timing window.
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Abstract
Systems and methods for distinguishing a valid sensed cardiac signal from an invalid signal, such as a myopotential. In one embodiment, sensing an electrical signal with one electrode causes a timing window to commence. When the electrical signal is sensed by another electrode in the timing window, the sense is deemed valid. When the electrical signal is not sensed by the other electrode in the timing window, the sense is deemed invalid. Therapy may be adjusted when an inordinate number of senses are invalid.
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Citations
53 Claims
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1. A method comprising:
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sensing an electrical signal with a first electrode;
commencing a timing window;
inhibiting delivery of a pacing therapy by the first electrode subsequent to termination of an escape interval during the timing window; and
recording the electrical signal as an invalid sense when a second electrode fails to sense the electrical signal in the timing window. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A computer-readable medium comprising instructions for causing a programmable processor to:
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sense a electrical signal with a first electrode;
commence a timing window;
inhibit delivery of a pacing therapy by the first electrode subsequent to termination of an escape interval during the timing window; and
record the electrical signal as an invalid sense when a second electrode fails to sense the electrical signal in the timing window. - View Dependent Claims (10, 11, 12, 13, 14, 15)
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16. A method comprising:
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sensing an electrical signal with a left ventricular electrode;
commencing a timing window;
inhibiting delivery of a pacing therapy by the left ventricular electrode subsequent to termination of an escape interval during the timing window; and
recording the electrical signal as an invalid sense when a right ventricular electrode fails to sense the electrical signal in the timing window. - View Dependent Claims (17, 18, 19, 20)
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21. A system comprising:
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a first electrode for placement proximal to a heart;
a second electrode for placement proximal to the heart;
a controller that senses an electrical signal as an invalid sense when the controller fails to sense the electrical signal with the second electrode in a timing window, wherein the controller inhibits delivery of a pacing therapy by the first electrode subsequent to termination of an escape interval during the timing window. - View Dependent Claims (22, 23, 24, 25, 26, 27, 28, 29)
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30. A method comprising:
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in a first monitoring period, sensing at least one electrical signal with a first electrode, commencing a timing window having a first duration and recording the electrical signal as an invalid sense when a second electrode fails to sense the electrical signal in the timing window having the first duration; and
in a second monitoring period, sensing at least one electrical signal with the first electrode, commencing a timing window having a second duration. - View Dependent Claims (31, 32, 33, 34)
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35. A method comprising:
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sensing an electrical signal with a first electrode;
commencing a timing window;
inhibiting delivery of a pacing therapy by the first electrode subsequent to termination of an escape interval during the timing window; and
recording the electrical signal as a valid sense when a second electrode senses the electrical signal in the timing window. - View Dependent Claims (36, 37, 38, 39, 40)
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41. A computer-readable medium comprising instructions for causing a programmable processor to:
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sense an electrical signal with a first electrode;
commence a timing window;
inhibiting delivery of a pacing therapy by the first electrode subsequent to termination of an escape interval during the timing window; and
record the electrical signal as a valid sense when a second electrode senses the electrical signal in the timing window. - View Dependent Claims (42, 43, 44, 45, 46)
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47. A system comprising:
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a first sensing means for placement proximal to a heart;
a second sensing means for placement proximal to the heart;
a therapy delivery means for delivering therapy to the heart; and
a controlling means for sensing an electrical signal with the first sensing means, commencing a timing window, inhibiting delivery of a pacing therapy by the therapy delivery means subsequent to termination of an escape interval during the timing window, and recording the electrical signal as an invalid sense when the controller fails to sense the electrical signal with the second sensing means in the timing window. - View Dependent Claims (48, 49, 50, 51, 52, 53)
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Specification