Heartbeat detection and categorization
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United States of America Patent
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Jul 14, 2015
Grant Date -
Apr 30, 2015
app pub date -
Oct 30, 2013
filing date -
Oct 30, 2013
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Abstract
An automatic method for detecting heartbeats of a patient from two or more selected ECG signals, the method comprising: (a) determining a velocity for each of the selected signals; (b) summing together absolute values of each of the velocities; (c) comparing the sum with a threshold T having a value about one-half of an expected maximum value of the sum; and (d) if the sum is greater than the threshold T and if elapsed time since an immediately-previous heartbeat detection is greater than a preset refractory period tR, a heartbeat has been detected at a time tD of the velocity determinations. The method also further includes steps by which the detected heartbeats are categorized based on the velocities at the time of detection.
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