Detection of heart failure decompensation based on cumulative changes in sensor signals
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United States of America Patent
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Jul 20, 2010
Grant Date -
Jun 21, 2007
app pub date -
Dec 20, 2005
filing date -
Dec 20, 2005
priority date (Note) -
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Abstract
Systems, devices and methods provide for evaluation of heart failure symptoms. Sensor data associated with one or more symptoms of heart failure are acquired and trended. Statistical features, such as slope, are extracted from the data trend in a moving window and are used to develop a cumulative sum. The cumulative sum is compared to a threshold value or V-mask to detect a shift in cumulative sum indicating changes in heart failure symptoms. A shift beyond the threshold value may trigger an alert or implementation of therapy.
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