METHOD AND APPARATUS FOR DETECTING ARRHYTHMIAS IN A MEDICAL DEVICE
First Claim
1. A method of detecting a cardiac event in a medical device, comprising:
- sensing cardiac signals from a plurality of electrodes, the plurality of electrodes forming a first sensing vector and a second sensing vector;
determining whether a signal energy content metric of the sensed cardiac signals is within predetermined limits;
determining whether a noise to signal ratio of the sensed cardiac signals is less than a signal to noise threshold;
determining whether the sensed cardiac signals are associated with muscle noise; and
determining whether a mean frequency corresponding to the sensed cardiac signals is less than a mean frequency threshold.
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Abstract
A method of detecting a cardiac event in a medical device that includes sensing cardiac signals from a plurality of electrodes forming a first sensing vector and a second sensing vector, determining whether a signal energy content metric of the sensed cardiac signals is within predetermined limits, determining whether a noise to signal ratio of the sensed cardiac signals is less than a signal to noise threshold, determining whether the sensed cardiac signals are associated with muscle noise, and determining whether a mean frequency corresponding to the sensed cardiac signals is less than a mean frequency threshold.
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Citations
21 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, the plurality of electrodes forming a first sensing vector and a second sensing vector;
determining whether a signal energy content metric of the sensed cardiac signals is within predetermined limits;
determining whether a noise to signal ratio of the sensed cardiac signals is less than a signal to noise threshold;
determining whether the sensed cardiac signals are associated with muscle noise; and
determining whether a mean frequency corresponding to the sensed cardiac signals is less than a mean frequency threshold. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20)
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21. A computer readable medium having computer executable instructions for performing a method comprising:
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sensing cardiac signals from a plurality of electrodes, the plurality of electrodes forming a first sensing vector and a second sensing vector;
determining whether a signal energy content metric of the sensed cardiac signals is within predetermined limits;
determining whether a noise to signal ratio of the sensed cardiac signals is less than a signal to noise threshold;
determining whether the sensed cardiac signals are associated with muscle noise; and
determining whether a mean frequency corresponding to the sensed cardiac signals is less than a mean frequency threshold.
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Specification