PROCESSING OF LAP SIGNALS
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United States of America Patent
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Issued Date -
Sep 11, 2014
app pub date -
Jun 20, 2011
filing date -
Jun 20, 2011
priority date (Note) -
Abandoned
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Abstract
Cardiac valve events are monitored by recording a left atrial pressure (LAP) representing signal using an implantable pressure sensor (50). The LAP signal is processed in order to generate a derivative LAP signal representative of the first time derivative of the LAP signal. The opening of the aortic valve of the heart is then identified to coincide in time with a minimum in the derivative LAP signal following ventricular depolarization in a cardiac cycle.
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