System and method for assessing cardiac performance through cardiac vibration monitoring
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United States of America Patent
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Sep 27, 2011
Grant Date -
Jul 13, 2006
app pub date -
Mar 3, 2006
filing date -
Feb 19, 2004
priority date (Note) -
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Abstract
A system and method for assessing cardiac performance through cardiac vibration monitoring is described. Cardiac vibration measures are directly collected through an implantable medical device. Cardiac events including at least one first heart sound reflected by the cardiac vibration measures are identified. The first heart sound is correlated to cardiac dimensional measures relative to performance of an intrathoracic pressure maneuver. The cardiac dimensional measures are grouped into at least one measures set corresponding to a temporal phase of the intrathoracic pressure maneuver. The at least one cardiac dimensional measures set is evaluated against a cardiac dimensional trend for the corresponding intrathoracic pressure maneuver temporal phase to represent cardiac performance.
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