Cardiac electrical signal morphology and pattern-based T-wave oversensing rejection
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United States of America Patent
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Dec 1, 2020
Grant Date -
Feb 1, 2018
app pub date -
Jul 20, 2017
filing date -
Jul 27, 2016
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Abstract
A medical device, such as an extra-cardiovascular implantable cardioverter defibrillator (ICD), senses R-waves from a first cardiac electrical signal by a first sensing channel and stores a time segment of a second cardiac electrical signal acquired by a second sensing channel in response to each sensed R-wave. The ICD determines morphology match scores from the stored time segments of the second cardiac electrical signal and, based on the morphology match scores, withholds detection of a tachyarrhythmia episode. In some examples, the ICD detects T-wave oversensing based on the morphology match scores and withholds detection of a tachyarrhythmia episode in response to detecting the T-wave oversensing.
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