Dynamic cardiac resynchronization therapy by tracking intrinsic conduction
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United States of America Patent
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Nov 27, 2012
Grant Date -
Apr 8, 2010
app pub date -
Sep 30, 2009
filing date -
Oct 6, 2008
priority date (Note) -
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Abstract
Systems and methods for pacing the heart using resynchronization pacing delays that achieve improvement of cardiac function are described. An early activation pacing interval is calculated based on an optimal AV delay and an atrial to early ventricular activation interval between an atrial event and early activation of a ventricular depolarization. The early activation pacing interval for the ventricle is calculated by subtracting the measured AVEA from the calculated optimal AV delay. The early activation pacing interval is initiated responsive to sensing early activation of the ventricle and pacing is delivered relative to expiration of the early activation pacing interval.
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