Acute ischemia detection based on smoothed temporal thresholding
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United States of America Patent
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Nov 24, 2015
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N/A
app pub date -
Jan 7, 2015
filing date -
Aug 25, 2010
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Abstract
A heart monitor is disclosed. The monitor computes ST segment deviations and stores the results in heart rate based histograms. Periodically, the monitor analyzes the histogram data to determine a normal range of ST deviation for a particular heart rate range. The monitor computes heart rate dependent ischemia detection thresholds based on the upper and lower boundaries of the normal range. A current threshold for a heart rate range is set as a weighted average of the prior threshold and a provisional threshold based on recent data, thereby limiting the amount the actual detection threshold changes from period to period.
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