CARDIAC ELECTRICAL SIGNAL GROSS MORPHOLOGY-BASED NOISE DETECTION FOR REJECTION OF VENTRICULAR TACHYARRHYTHMIA DETECTION
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Jul 19, 2017
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Jul 27, 2016
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A medical device system, 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 in response to each sensed R-wave. The medical device system determines a morphology parameter correlated to signal noise from time segments of the second cardiac electrical signal, detects a noisy signal segment based on the signal morphology parameter; and withholds detection of a tachyarrhythmia episode in response to detecting a threshold number of noisy signal segments.
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