Modulation of AV delay to control ventricular interval variability
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United States of America Patent
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Mar 8, 2011
Grant Date -
Feb 26, 2009
app pub date -
Aug 20, 2007
filing date -
Aug 20, 2007
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Abstract
System and methods provide pacing therapy that modulates the atrioventricular (AV) delay to control ventricular interval variability. A base AV delay is determined as a function of heart rate. For each cardiac cycle, the base AV delay is modulated to reduce beat-to-beat variability of successive ventricular beats. The modulated AV delay compensates for variability of successive atrial beats. For example, modulation of the base AV delay may involve varying the AV delay inversely with a change in atrial interval.
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