Systems and methods for determining physiological information by identifying fiducial points in a physiological signal
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United States of America Patent
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Jun 27, 2017
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app pub date -
Feb 27, 2013
filing date -
Feb 27, 2013
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Abstract
A patient monitoring system may generate a derivative signal from a physiological signal. The derivative signal may be filtered based on a pulse rate estimate associated with the physiological signal. A plurality of crossing points may be determined for the filtered derivative signal and translated to the derivative signal. A plurality of fiducial points may be determined for the derivative signal based on the plurality of crossing points. The plurality of fiducial points may be utilized to determine physiological information from the physiological signal.
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