Method and apparatus for verifying a determined cardiac event in a medical device based on detected variation in hemodynamic status
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United States of America Patent
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Jan 12, 2010
Grant Date -
Nov 1, 2007
app pub date -
Apr 28, 2006
filing date -
Mar 31, 2006
priority date (Note) -
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Abstract
A method and apparatus for verifying a determined cardiac event in a medical device based on detected variation in hemodynamic status that includes a plurality of sensors sensing cardiac signals, and a physiologic sensor sensing physiologic signals to generate a plurality of variation index samples corresponding to the sensed signals. A microprocessor detects a cardiac event in response to the sensed cardiac signals, computes a variation index trend associated with a predetermined number of variation index samples of the plurality of variation index samples, determines a rate of change of the computed variation index trend, and confirms the determined cardiac event in response to the computed variation index trend and in response to the determined rate of change.
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