Method and apparatus for detecting arrhythmias in a medical device
First Claim
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1. A method of detecting a cardiac event in a medical device, comprising:
- sensing cardiac signals from a plurality of electrodes coupled to the medical device;
determining a low slope content metric of the sensed cardiac signals by the medical device;
determining a spectral width metric of the sensed cardiac signals by the medical device;
detecting the sensed cardiac signals as being associated with the cardiac event in response to the determined low slope content metric and spectral width metric of the sensed cardiac signals by the medical device; and
delivering a therapy via the device in response to the detecting.
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Abstract
A method of detecting a cardiac event that includes sensing cardiac signals from a plurality of electrodes, determining rates of change of the sensed cardiac signals, and determining a range of the sensed cardiac signals. The sensed cardiac signals are detected as being associated with the cardiac event in response to the determined rates of change and the determined range.
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Citations
11 Claims
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1. A method of detecting a cardiac event in a medical device, comprising:
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sensing cardiac signals from a plurality of electrodes coupled to the medical device; determining a low slope content metric of the sensed cardiac signals by the medical device; determining a spectral width metric of the sensed cardiac signals by the medical device; detecting the sensed cardiac signals as being associated with the cardiac event in response to the determined low slope content metric and spectral width metric of the sensed cardiac signals by the medical device; and delivering a therapy via the device in response to the detecting. - View Dependent Claims (2, 3, 4, 5)
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6. A method of detecting a cardiac event in a medical device, comprising:
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sensing cardiac signals from a plurality of electrodes coupled to the medical device, the plurality of electrodes forming a first sensing vector and a second sensing vector; determining a first low slope content metric of the cardiac signals sensed by the first sensing vector over a predetermined sensing window by the medical device; determining a second low slope content metric of the cardiac signals sensed by the second sensing vector over the predetermined sensing window by the medical device; determining a first spectral width metric of the cardiac signals sensed by the first sensing vector over the predetermined sensing window by the medical device; determining a second spectral width metric of the cardiac signals sensed by the second sensing vector over the predetermined sensing window by the medical device; detecting the sensed cardiac signals as being associated with the cardiac event in response to the first low slope content, the second low slope content, the first spectral width metric and the second spectral width metric by the medical device; and delivering a therapy via the medical device in response to the detecting. - View Dependent Claims (7, 8, 9)
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10. A non-transitory computer readable medium having computer executable instructions for performing a method comprising:
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sensing cardiac signals from a plurality of electrodes; determining a low slope content metric of the sensed cardiac signals; determining a spectral width metric of the sensed cardiac signals; detecting the sensed cardiac signals as being associated with the event in response to the determined low slope content metric and the determined spectral width metric.
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11. A medical device for detecting a cardiac event, comprising:
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a plurality of electrodes sensing cardiac signals; a processor configured to determine a low slope content metric of the sensed cardiac signals, determine a spectral width metric of the sensed cardiac signals, and detect the sensed cardiac signals as being associated with the cardiac event in response to the determined low slope content metric and spectral width metric of the sensed cardiac signals by the medical device; and a pulse generator to deliver a therapy via an electrode of the plurality of electrodes.
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Specification