Morphology-based optimization of cardiac resynchronization therapy
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United States of America Patent
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Feb 14, 2012
Grant Date -
Oct 29, 2009
app pub date -
Jul 6, 2009
filing date -
Oct 26, 2001
priority date (Note) -
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Abstract
A method and apparatus for delivering cardiac resynchronization therapy (CRT) in which an evoked response electrogram is recorded during one or more cardiac cycles and used to aid in the selection of resynchronization pacing parameters and/or to monitor the effectiveness of resynchronization therapy. The morphology of an evoked response electrogram may be recorded and analyzed to determine if and when intrinsic activation of one ventricle is occurring in order to optimally adjust the programmed atrio-ventricular (AV) delay interval for ventricular resynchronization pacing of a patient with intact AV node conduction.
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