Method and apparatus for discrimination of ventricular tachycardia from ventricular fibrillation and for treatment thereof
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United States of America Patent
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Mar 16, 1993
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N/A
app pub date -
Aug 27, 1991
filing date -
Aug 27, 1991
priority date (Note) -
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Abstract
An implantable cardioverter/defibrillator provided with method and apparatus for discrimination between ventricular tachycardia and ventricular fibrillation. The device is provided with two pairs of electrodes, each pair of electrodes coupled to processing circuitry for identifying a predetermined fiducal point in the electrical signal associated with a ventricular depolarization. The cumulative beat to beat variability of the intervals separating the two identified fiducal points, over a series of detected depolarizations is analyzed. The result of this analysis is used to distinguish between ventricular tachycardia and ventricular fibrillation.
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