Removing polarization artifacts from electrical activity signals to detect cardiac evoked response

Removing polarization artifacts from electrical activity signals to detect cardiac evoked response

The invention is directed to techniques for removing polarization artifacts from electrical activity signals in order to detect presence of an evoked response. More specifically, a medical device receives a signal that represents electrical activity within a heart of a patient following delivery of...

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Hauptverfasser: KERVER HARRY BERNARDUS ANTONIUS, OOSTERHOFF PETER
Format: Patent
Sprache:eng
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ELECTROTHERAPY
HUMAN NECESSITIES
HYGIENE
MAGNETOTHERAPY
MEDICAL OR VETERINARY SCIENCE
RADIATION THERAPY
ULTRASOUND THERAPY
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creator KERVER HARRY BERNARDUS ANTONIUS
OOSTERHOFF PETER
description The invention is directed to techniques for removing polarization artifacts from electrical activity signals in order to detect presence of an evoked response. More specifically, a medical device receives a signal that represents electrical activity within a heart of a patient following delivery of a stimulation pulse to the heart and reconfigures a filter state of a filter from an initial filter state to remove the polarization artifact from the electrical activity signal in order to determine whether a cardiac event, such as an evoked response has occurred. The medical device may, for example, when the filter of the medical device is a digital filter, recalculate the values of digital filter components using the present input value of the electrical activity signal as a direct current-(DC) input value of the digital filter.
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subjects ELECTROTHERAPY
HUMAN NECESSITIES
HYGIENE
MAGNETOTHERAPY
MEDICAL OR VETERINARY SCIENCE
RADIATION THERAPY
ULTRASOUND THERAPY
title Removing polarization artifacts from electrical activity signals to detect cardiac evoked response
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