Devices and methods for accelerometer-based characterization of cardiac synchrony and dyssynchrony
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United States of America Patent
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Issued Date -
Jan 24, 2008
app pub date -
Apr 24, 2007
filing date -
Apr 24, 2006
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Abandoned
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Abstract
Systems and methods according to the invention employ an acceleration sensor to characterize the synchrony or dyssynchrony of the left ventricle. Patterns of acceleration related to myocardial contraction can be used to assess synchrony or dyssynchrony. Time-frequency transforms and coherence are derived from the acceleration. Information and numerical indices determined from the acceleration time frequency transforms and coherence can be used to find the optimal pacing location for cardiac resynchronization therapy. Similarly, the information can be used to optimize timing intervals including V to V and A to V timing.
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