Method and apparatus for detecting change in intrathoracic electrical impedance
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United States of America Patent
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Jul 26, 2011
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app pub date -
Dec 3, 2003
filing date -
Dec 4, 2002
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Abstract
A method and apparatus for detection of changes in impedance a patient that includes generating measured impedances, generating an adaptive baseline trend of the measured impedances corresponding to a first time period, generating a short term trend of the measured impedances corresponding to a second time period less than the first time period, and generating a metric of impedance change between the adaptive baseline trend and one of a most recent measured impedance and the short term trend of the measured impedances.
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