Electrocardiogram Reconstruction From Implanted Device Electrograms
First Claim
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1. A method, comprising:
- a) providing;
i) a traditional electrocardiogram (sEKG) derived from skin surface electrodes;
ii) at least one intracardiac electromyogram (EMG) derived from an implanted cardiac device, wherein said device is connected a plurality of electrode leads;
b) comparing said sEKG and said EMG to obtain an EMG/sEKG correlation parameter; and
c) calculating a reconstructed electrocardiogram using said correlation parameter and said EMG.
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Abstract
A method of reconstruction of the standard 12-lead surface EKG given values of the electrical potential from an implanted medical device is described. This implanted device can be oriented in an arbitrary fashion and reconstruction technique is obtained through physical measurement of the orientation of the implanted device or correlation with a standard 12-lead EKG obtained from the patient.
23 Citations
25 Claims
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1. A method, comprising:
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a) providing; i) a traditional electrocardiogram (sEKG) derived from skin surface electrodes; ii) at least one intracardiac electromyogram (EMG) derived from an implanted cardiac device, wherein said device is connected a plurality of electrode leads; b) comparing said sEKG and said EMG to obtain an EMG/sEKG correlation parameter; and c) calculating a reconstructed electrocardiogram using said correlation parameter and said EMG. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A system, comprising:
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a) an implanted cardiac device comprising a positional sensor, wherein said device is connected to a plurality of electrode leads, and wherein said leads provide intracardiac electromyograms (EMG); b) a computer comprising at least one microprocessor, wherein said computer is operably linked to said cardiac device; c) a plurality of EMG/sEKG correlation parameters residing on said at least one microprocessor, wherein each parameter is derived from differential data from said positional sensor; and d) an algorithm residing on said at least one microprocessor, wherein said algorithm calculates a reconstructed EKG (rEKG) using said EMG and said correlation parameters. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 17)
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18. A method, comprising:
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a) providing; i) a subject exhibiting symptoms of a cardiac disease; ii) a system capable of calculating a reconstructed electrocardiogram (rEKG) specific for said subject; iii) a testing parameter known to detect said cardiac disease; b) administering said testing parameter to said subject under conditions such that said rEKG detects said cardiac disease. - View Dependent Claims (19, 20, 21, 22, 23, 24, 25)
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Specification