Method and apparatus for adjusting cardiac event detection threshold based on dynamic noise estimation

Method and apparatus for adjusting cardiac event detection threshold based on dynamic noise estimation

An implantable cardiac rhythm management (CRM) device includes a sensing and detection circuit that senses at least one cardiac signal and detects cardiac electrical events from the sensed cardiac signal using a detection threshold that is adjusted based on a dynamic noise estimation. The sensed car...

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Hauptverfasser: MANIAK JEREMY, LINDER WILLIAM J, BALCZEWSKI RON A
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Sprache:eng
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DIAGNOSIS
ELECTROTHERAPY
HUMAN NECESSITIES
HYGIENE
IDENTIFICATION
MAGNETOTHERAPY
MEDICAL OR VETERINARY SCIENCE
RADIATION THERAPY
SURGERY
ULTRASOUND THERAPY
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creator MANIAK JEREMY
LINDER WILLIAM J
BALCZEWSKI RON A
description An implantable cardiac rhythm management (CRM) device includes a sensing and detection circuit that senses at least one cardiac signal and detects cardiac electrical events from the sensed cardiac signal using a detection threshold that is adjusted based on a dynamic noise estimation. The sensed cardiac signal is filtered to produce a filtered cardiac signal having a signal frequency band and a noise signal having a noise frequency band. The noise frequency band is substantially different from the signal frequency band. A dynamic noise floor is produced based on the noise signal and used as the minimum value for the detection threshold. A cardiac electrical is detected when the amplitude of the filtered cardiac signal exceeds the detection threshold.
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subjects DIAGNOSIS
ELECTROTHERAPY
HUMAN NECESSITIES
HYGIENE
IDENTIFICATION
MAGNETOTHERAPY
MEDICAL OR VETERINARY SCIENCE
RADIATION THERAPY
SURGERY
ULTRASOUND THERAPY
title Method and apparatus for adjusting cardiac event detection threshold based on dynamic noise estimation
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