WO2004050185A3 - Methods and apparatus for discriminating polymorphic from monomorphic tachyarrhythmias - Google Patents

Methods and apparatus for discriminating polymorphic from monomorphic tachyarrhythmias Download PDF

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Publication number
WO2004050185A3
WO2004050185A3 PCT/US2003/038353 US0338353W WO2004050185A3 WO 2004050185 A3 WO2004050185 A3 WO 2004050185A3 US 0338353 W US0338353 W US 0338353W WO 2004050185 A3 WO2004050185 A3 WO 2004050185A3
Authority
WO
WIPO (PCT)
Prior art keywords
qrs complexes
polymorphic
wavelet
monomorphic
methods
Prior art date
Application number
PCT/US2003/038353
Other languages
French (fr)
Other versions
WO2004050185A2 (en
Inventor
Mark L Brown
Shantanu Sarkar
Original Assignee
Medtronic Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Medtronic Inc filed Critical Medtronic Inc
Priority to AU2003298830A priority Critical patent/AU2003298830A1/en
Priority to JP2004570995A priority patent/JP4423207B2/en
Priority to DE60315068T priority patent/DE60315068T2/en
Priority to CA002508702A priority patent/CA2508702A1/en
Priority to EP03796588A priority patent/EP1569720B1/en
Publication of WO2004050185A2 publication Critical patent/WO2004050185A2/en
Publication of WO2004050185A3 publication Critical patent/WO2004050185A3/en

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/72—Signal processing specially adapted for physiological signals or for diagnostic purposes
    • A61B5/7235—Details of waveform analysis
    • A61B5/7253—Details of waveform analysis characterised by using transforms
    • A61B5/726—Details of waveform analysis characterised by using transforms using Wavelet transforms
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/316—Modalities, i.e. specific diagnostic methods
    • A61B5/318—Heart-related electrical modalities, e.g. electrocardiography [ECG]
    • A61B5/346—Analysis of electrocardiograms
    • A61B5/349—Detecting specific parameters of the electrocardiograph cycle
    • A61B5/361—Detecting fibrillation
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/24—Detecting, measuring or recording bioelectric or biomagnetic signals of the body or parts thereof
    • A61B5/316—Modalities, i.e. specific diagnostic methods
    • A61B5/318—Heart-related electrical modalities, e.g. electrocardiography [ECG]
    • A61B5/346—Analysis of electrocardiograms
    • A61B5/349—Detecting specific parameters of the electrocardiograph cycle
    • A61B5/363—Detecting tachycardia or bradycardia
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00—Electrotherapy; Circuits therefor
    • A61N1/18—Applying electric currents by contact electrodes
    • A61N1/32—Applying electric currents by contact electrodes alternating or intermittent currents
    • A61N1/38—Applying electric currents by contact electrodes alternating or intermittent currents for producing shock effects
    • A61N1/39—Heart defibrillators
    • A61N1/3956—Implantable devices for applying electric shocks to the heart, e.g. for cardioversion
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/0002—Remote monitoring of patients using telemetry, e.g. transmission of vital signals via a communication network
    • A61B5/0031—Implanted circuitry

Abstract

Methods and apparatus are provided for discriminating high rate polymorphic QRS complexes from high rate monomorphic QRS complexes to increase the specificity of detection of polymorphic VT and VF employing wavelet transform signal processing of the QRS complexes are disclosed. Wavelet transforms are applied to the sampled amplitude values of a sequence of QRS complexes to develop wavelet transform coefficient (WTC) data sets. At least selected ones of the WTC data sets are processed and comparisons are made to determine a wavelet match score. A determination is made as a function of the wavelet match scores of the series of successive QRS complexes that characterizes the most recent QRS complex as more or less likely to signify polymorphic VT or VF.
PCT/US2003/038353 2002-12-04 2003-12-03 Methods and apparatus for discriminating polymorphic from monomorphic tachyarrhythmias WO2004050185A2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
AU2003298830A AU2003298830A1 (en) 2002-12-04 2003-12-03 Methods and apparatus for discriminating polymorphic from monomorphic tachyarrhythmias
JP2004570995A JP4423207B2 (en) 2002-12-04 2003-12-03 Method and system for distinguishing polymorphic tachyarrhythmia from monomorphic tachyarrhythmia
DE60315068T DE60315068T2 (en) 2002-12-04 2003-12-03 Differentiation of polymorphic from monomorphic tachyarrhythmias
CA002508702A CA2508702A1 (en) 2002-12-04 2003-12-03 Methods and apparatus for discriminating polymorphic from monomorphic tachyarrhythmias
EP03796588A EP1569720B1 (en) 2002-12-04 2003-12-03 Apparatus for discriminating polymorphic from monomorphic tachyarrhythmias

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US43092602P 2002-12-04 2002-12-04
US60/430,926 2002-12-04
US10/653,000 2003-08-29
US10/653,000 US7130677B2 (en) 2002-12-04 2003-08-29 Methods and apparatus for discriminating polymorphic tachyarrhythmias from monomorphic tachyarrhythmias facilitating detection of fibrillation

Publications (2)

Publication Number Publication Date
WO2004050185A2 WO2004050185A2 (en) 2004-06-17
WO2004050185A3 true WO2004050185A3 (en) 2004-08-26

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2003/038353 WO2004050185A2 (en) 2002-12-04 2003-12-03 Methods and apparatus for discriminating polymorphic from monomorphic tachyarrhythmias

Country Status (7)

Country Link
US (1) US7130677B2 (en)
EP (1) EP1569720B1 (en)
JP (1) JP4423207B2 (en)
AU (1) AU2003298830A1 (en)
CA (1) CA2508702A1 (en)
DE (1) DE60315068T2 (en)
WO (1) WO2004050185A2 (en)

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US7672717B1 (en) * 2003-10-22 2010-03-02 Bionova Technologies Inc. Method and system for the denoising of large-amplitude artifacts in electrograms using time-frequency transforms
US7242978B2 (en) * 2003-12-03 2007-07-10 Medtronic, Inc. Method and apparatus for generating a template for arrhythmia detection and electrogram morphology classification
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US9351859B2 (en) 2010-12-06 2016-05-31 Covidien Lp Vascular remodeling device
US8165666B1 (en) * 2011-05-02 2012-04-24 Topera, Inc. System and method for reconstructing cardiac activation information
US20130024123A1 (en) * 2011-07-21 2013-01-24 Nellcor Puritan Bennett Ireland Methods and systems for determining physiological parameters using template matching
US8768459B2 (en) 2011-07-31 2014-07-01 Medtronic, Inc. Morphology-based precursor to template matching comparison
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Also Published As

Publication number Publication date
EP1569720A2 (en) 2005-09-07
WO2004050185A2 (en) 2004-06-17
US20040111121A1 (en) 2004-06-10
EP1569720B1 (en) 2007-07-18
CA2508702A1 (en) 2004-06-17
AU2003298830A1 (en) 2004-06-23
AU2003298830A8 (en) 2004-06-23
JP4423207B2 (en) 2010-03-03
US7130677B2 (en) 2006-10-31
JP2006508774A (en) 2006-03-16
DE60315068D1 (en) 2007-08-30
DE60315068T2 (en) 2007-10-31

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