Method of and apparatus for multi-vector pacing artifact detection
First Claim
1. An apparatus for detecting a pacing artifact within an EKG signal, comprising:
- a. means for sensing a signal from each a plurality of EKG leads;
b. means coupled to said sensing means for producing a composite signal from said plurality of EKG leads, said producing means further comprising means for algebraically adding each of said sensed signal from said plurality of EKG leads; and
c. means coupled to said algebraic adding means for detecting said pacing artifact present within said composite signal.
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Abstract
A technique for improving detection of the pacing artifact in patients having artificially paced myocardial contractions. The improved detection is accomplished by sensing all three commonly monitored EKG leads. Each lead is differentially amplified and rectified to produce a signal of absolute value. The resulting three signals are algebraically summed and differentiated. Because the pacing artifact consists of higher frequency components than the naturally occurring QRS complex, it can easily be detected by its much larger first derivative.
Reliable detection of the artificial pacing artifact is extremely important in monitoring and programming implantable pacers. It is necessary to accurately determine whether a pacing pulse has been delivered and precisely measure the time of its occurrence.
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8 Claims
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1. An apparatus for detecting a pacing artifact within an EKG signal, comprising:
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a. means for sensing a signal from each a plurality of EKG leads; b. means coupled to said sensing means for producing a composite signal from said plurality of EKG leads, said producing means further comprising means for algebraically adding each of said sensed signal from said plurality of EKG leads; and c. means coupled to said algebraic adding means for detecting said pacing artifact present within said composite signal. - View Dependent Claims (2, 3, 4, 5)
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6. A method of detecting a pacing artifact within an EKG signal, comprising the steps of:
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a. sensing a plurality of signals wherein each of said plurality of signals represents a different one of a plurality of EKG leads; b. producing a composite signal from said plurality of signals, said step of producing comprising algebraically adding said plurality of signals; and c. detecting said pacing artifact within said composite signal. - View Dependent Claims (7, 8)
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Specification