Method and apparatus for discrimination atrial fibrillation using ventricular rate detection
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United States of America Patent
Stats
-
Jul 26, 2005
Grant Date -
May 30, 2002
app pub date -
Nov 28, 2001
filing date -
Nov 28, 2000
priority date (Note) -
Expired
status (Latency Note)
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Abstract
A method and apparatus for method for discriminating heart rhythms includes computing a first predetermined number of RR intervals from received QRS intervals, and computing a median RR interval corresponding to a predetermined number of the first predetermined number of RR intervals. A predetermined beat-to-beat variation and a corresponding predetermined count are determined based on the computed median RR interval. Beat-to-beat variation differences between the first predetermined number of RR intervals are computed and a determination is made as to whether the computed beat-to-beat variation differences are greater than the predetermined beat-to-beat variation, and as to whether a number of the computed beat-to-beat variation differences that are greater than the predetermined beat-to-beat variation is greater than the predetermined count. The heart rhythm is identified as an irregular rhythm in response to the number being greater than or equal to the predetermined count.
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