Ischemia detection using heart sound timing
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United States of America Patent
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Jun 15, 2010
Grant Date -
Jul 24, 2008
app pub date -
Jan 19, 2007
filing date -
Jan 19, 2007
priority date (Note) -
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Abstract
A system comprising a heart sound sensor to produce a heart sound signal representative of at least one heart sound. A signal analyzer circuit measures a baseline time interval between a first detected physiologic cardiovascular event and at least one second detected physiologic cardiovascular event. At least one of the first and second detected physiologic cardiovascular events includes a heart sound event obtained from the heart sound signal. The sensor analyzer circuit determines that an ischemic event occurred at least in part by detecting a specified measured subsequent change from the established baseline time interval. Other systems and methods are disclosed.
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