System and method with improved automatic testing functions for automatic capture verification
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United States of America Patent
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Jul 20, 2004
Grant Date -
N/A
app pub date -
Jan 11, 2002
filing date -
Jan 11, 2002
priority date (Note) -
Expired
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Abstract
An implantable cardiac stimulation system capable of automatic capture verification is provided with an associated method for performing automatic testing functions using programmable, or automatically determined, atrioventricular delays. Automatic threshold testing and evoked response sensitivity testing performed at a user-specified delay setting, rather than a preset setting, allows assessment of automatic capture verification based on an atrioventricular delay relevant to daily system function. Further features of the present invention are an adjustable frequency with which automatic threshold tests are performed and an adjustable frequency with which threshold test results are stored in memory in a threshold record for better monitoring of lead stability or impending clinical problems. The frequency of performing threshold tests and the frequency of storing threshold test results may be varied according to the threshold stability. Stored threshold test results are advantageously displayed with respect to a fixed or variable time scale.
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