Methods and apparatus for atrioventricular search
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United States of America Patent
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Apr 30, 2013
Grant Date -
Oct 28, 2004
app pub date -
Apr 18, 2003
filing date -
Apr 18, 2003
priority date (Note) -
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Abstract
In general, the invention provides for commencing an atrioventricular (AV) search in response to an indicator of an autonomic nervous system (ANS) activity. An implantable medical device (IMD) may be configured to apply this technique, and also to apply rate adaptive ventricular pacing. In response to ANS activity such as an abrupt increase in cardiac sympathetic nervous activity, the IMD performs an AV search to find the intrinsic AV interval of the patient. The invention includes selection of a maximum AV delay so that the AV search will not adversely affect hemodynamic function.
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