NARROW BAND FEATURE EXTRACTION FROM CARDIAC SIGNALS
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United States of America Patent
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Issued Date -
Apr 16, 2015
app pub date -
May 28, 2013
filing date -
May 28, 2012
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Abstract
A PPG or other cardiac signal is analysed by calculating its amplitude in a narrow frequency range around the estimated heart rate or a harmonic of the heart rate. Cardiac signals from a patient in different states, e.g., exercise and non-exercise or limb lowered and limb raised can be analysed and the amplitude in the narrow range compared to determine various vascular conditions such as peripheral arterial disease.
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