Diagnosis and therapy of bigeminy and frequent premature contractions
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United States of America Patent
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May 7, 2013
Grant Date -
Apr 26, 2012
app pub date -
Oct 26, 2010
filing date -
Oct 26, 2010
priority date (Note) -
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Abstract
The disclosure describes techniques for diagnosing premature contractions of a patient's heart. This system may differentiate premature atrial contractions (PACs) and premature ventricular contractions (PVCs) from atrial fibrillation by identifying changes in R-wave intervals, i.e., R-R intervals, on a Lorenz plot, measuring a coupling interval between R-waves, and analyzing a morphology of the premature contractions, e.g., the QRS complex. These techniques may also identify when severe premature contractions, or bigeminy, are present. In response to the type of premature contractions detected, the system may alert a user of the premature contractions and/or deliver cardiac pacing at an increased pacing rate to eliminate the abnormal intrinsic contractions. The system may also adjust the pacing rate and pacing rate duration for persistent premature contractions.
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