Dual chamber pacing system having time-adaptive AV delay
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United States of America Patent
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Jan 14, 2003
Grant Date -
N/A
app pub date -
Apr 3, 2000
filing date -
Apr 3, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
Rate responsive pacing systems that employ a time-dependent AV delay in the pacing hearts in Congestive Heart Failure (CHF) with Dilated Cardiomyopathy (DCM) (a CHF/DCM heart) during a post-implant Time-Adaptive period are disclosed. A starting or initial AV delay is set to an intrinsic AV delay time interval exhibited by the patient's heart at the time of implant. A chronic AV delay is then set to a therapeutic AV delay time interval that is shorter than the intrinsic AV delay time interval and alleviates symptoms of the CHF/DCM heart. A Time-Adaptive AV delay (TA-AV delay) is employed during a post-implant Time-Adaptive period that gradually changes the initial AV delay to the chronic AV delay at the end of the post-implant Time-Adaptive period.
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