Method and apparatus for monitoring electrocardiographic waveforms
First Claim
1. An ECG monitoring system comprising means responsive to an ECG waveform for providing a measure proportional to the area of the QRS complex of said ECG waveform, means responsive to the ECG waveform for providing a measure proportional to the peak height of the QRS complex of said ECG waveform, and means for dividing said area measure by said peak height measure thereby to provide a normalized measure proportional to the width of the QRS complex of said ECG waveform.
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Accused Products
Abstract
Apparatus for the recognition of ventricular premature beats by an identifying width of a QRS complex by dividing the area by the height and further noting when the width measurements is at least 40% wider than the average width of the immediately preceding several QRS complexes. Additional apparatus for indicating ventricular premature beats by determination of an early width determination which exceeds the average width by at least 20% and is additionally followed by the compensatory pause as determined by interbeat interval measurement.
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Citations
12 Claims
- 1. An ECG monitoring system comprising means responsive to an ECG waveform for providing a measure proportional to the area of the QRS complex of said ECG waveform, means responsive to the ECG waveform for providing a measure proportional to the peak height of the QRS complex of said ECG waveform, and means for dividing said area measure by said peak height measure thereby to provide a normalized measure proportional to the width of the QRS complex of said ECG waveform.
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12. In an ECG monitoring system, the method of indirectly providing a measure of the width of a QRS complex appearing in an ECG waveform comprising the steps of:
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generating from the ECG waveform a signal proportional to the area of the QRS complex; generating from the ECG waveform a signal proportional to the peak height of the QRS complex; and dividing said area signal by said peak amplitude signal to provide a normalized signal representative of the width of the QRS complex of said ECG signal.
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Specification