Discrimination of supraventricular tachycardia and ventricular tachycardia events
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United States of America Patent
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Apr 24, 2001
Grant Date -
N/A
app pub date -
Mar 12, 1999
filing date -
Mar 12, 1999
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Abstract
A method and system for discrimination of supraventricular tachycardia and ventricular tachycardia events. Morphological features points are extracted from normal sinus rhythm (NSR) complexes and used to generate a NSR template. A numerical convolution is performed using the NSR template and the feature points for each sensed NSR to give a NSR filter output. Using a plurality of NSR complexes, a median NSR filter output template is determined, where the median NSR filter output template has a median value for each value in the NSR filter output. The median NSR filter output template is then used during a tachycardia event to distinguish tachycardia events as either ventricular tachycardia events or supraventricular tachycardia events.
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