Method and apparatus for detecting change in intrathoracic...

A - Human Necessities – 61 – N

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A61N 1/365 (2006.01) A61B 5/00 (2006.01) A61B 5/053 (2006.01) A61N 1/362 (2006.01)

Patent

CA 2508403

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.

L'invention concerne un procédé et un appareil permettant de détecter des changements d'impédance d'un patient. Le procédé de l'invention consiste: à générer des impédances mesurées; à générer une tendance de base adaptative des impédances mesurées correspondant à une première période temporelle; à générer une tendance à court terme des impédances mesurées correspondant à une deuxième période temporelle inférieure à la première temporelle inférieure; et à générer une mesure de changement d'impédance entre la tendance de base adaptative et une impédance mesurée plus récente ou la tendance à court terme des impédances mesurées.

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