ES2239775T3 - Sistema para estimar salidas cardiacas. - Google Patents

Sistema para estimar salidas cardiacas.

Info

Publication number
ES2239775T3
ES2239775T3 ES96937752T ES96937752T ES2239775T3 ES 2239775 T3 ES2239775 T3 ES 2239775T3 ES 96937752 T ES96937752 T ES 96937752T ES 96937752 T ES96937752 T ES 96937752T ES 2239775 T3 ES2239775 T3 ES 2239775T3
Authority
ES
Spain
Prior art keywords
estimator
trend
indicator
signal
local
Prior art date
Legal status (The legal status 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 status listed.)
Expired - Lifetime
Application number
ES96937752T
Other languages
English (en)
Inventor
Russell Mckown
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Edwards Lifesciences Corp
Original Assignee
Edwards Lifesciences Corp
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 Edwards Lifesciences Corp filed Critical Edwards Lifesciences Corp
Application granted granted Critical
Publication of ES2239775T3 publication Critical patent/ES2239775T3/es
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
    • A61B5/026—Measuring blood flow
    • A61B5/0275—Measuring blood flow using tracers, e.g. dye dilution
    • A61B5/028—Measuring blood flow using tracers, e.g. dye dilution by thermo-dilution
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/02—Detecting, measuring or recording pulse, heart rate, blood pressure or blood flow; Combined pulse/heart-rate/blood pressure determination; Evaluating a cardiovascular condition not otherwise provided for, e.g. using combinations of techniques provided for in this group with electrocardiography or electroauscultation; Heart catheters for measuring blood pressure
    • A61B5/026—Measuring blood flow
    • A61B5/029—Measuring or recording blood output from the heart, e.g. minute volume
    • 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
    • A61B5/7257—Details of waveform analysis characterised by using transforms using Fourier transforms

Landscapes

  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Heart & Thoracic Surgery (AREA)
  • Medical Informatics (AREA)
  • Physics & Mathematics (AREA)
  • Cardiology (AREA)
  • Biophysics (AREA)
  • Pathology (AREA)
  • Engineering & Computer Science (AREA)
  • Biomedical Technology (AREA)
  • Hematology (AREA)
  • Physiology (AREA)
  • Molecular Biology (AREA)
  • Surgery (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Measuring Pulse, Heart Rate, Blood Pressure Or Blood Flow (AREA)
  • Electrotherapy Devices (AREA)

Abstract

EL GASTO CARDIACO (GC) SE CALCULA POR SEPARADO EN UN ESTIMADOR LOCAL (118) Y EN UN ESTIMADOR DE TENDENCIAS (120) PARA PROPORCIONAR VALORES DE GC. SE INYECTA UN INDICADOR TERMICO PREFERENTEMENTE DE ACUERDO CON UN PERFIL SEUDOALEATORIO DE SEÑALES DE SECUENCIA BINARIA (X(T)) EN UNA POSICION SUPERIOR DE LA CORRIENTE SANGUINEA DE UNA REGION DE FLUJO SANGUINEO DEL ORGANISMO DE UN PACIENTE, DETECTANDOSE COMO UNA SEÑAL DE SALIDA DE UN INDICADOR (108) (Y(T)) EN UNA POSICION INFERIOR DE LA CORRIENTE SANGUINEA. SE ELIMINA PREFERENTEMENTE EL RUIDO DE BAJA FRECUENCIA DE LA SEÑAL DE SALIDA DEL INDICADOR DETECTADA. LAS ESTIMACIONES LOCALES Y DE TENDENCIAS SE BASAN EN LOS VALORES MEDIDOS DE LA FUNCION DE TRANSFERENCIA FRECUENCIA - DOMINIO ENTRE LA SEÑAL DETECTADA Y LA SEÑAL DE ENTRADA DEL INDICADOR EN RELACION CON UN MODELO PREDETERMINADO DE FUNCION DE TRANSFERENCIA, QUE PREFERENTEMENTE ES UN MODELO NORMAL AISLADO DEL CALOR. EL ESTIMADOR DE TENDENCIAS ES PREFERENTEMENTE UN FILTRO KALMAN. EL ESTIMADOR LOCALGENERA PREFERENTEMENTE SU ESTIMACION A PARTIR DE UNA OPTIMACION NO REPETITIVA DE UNA FUNCION DE COSTES. EL ESTIMADOR LOCAL PROPORCIONA PREFERENTEMENTE VALORES INICIALES PARA INICIAR LA ACTIVIDAD DEL ESTIMADOR DE TENDENCIAS.
ES96937752T 1995-10-26 1996-10-25 Sistema para estimar salidas cardiacas. Expired - Lifetime ES2239775T3 (es)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
US08/548,937 US5687733A (en) 1995-10-26 1995-10-26 System and method for estimating cardiac output

Publications (1)

Publication Number Publication Date
ES2239775T3 true ES2239775T3 (es) 2005-10-01

Family

ID=24190994

Family Applications (1)

Application Number Title Priority Date Filing Date
ES96937752T Expired - Lifetime ES2239775T3 (es) 1995-10-26 1996-10-25 Sistema para estimar salidas cardiacas.

Country Status (10)

Country Link
US (1) US5687733A (es)
EP (1) EP0862379B1 (es)
JP (2) JPH11513910A (es)
CN (1) CN1130166C (es)
AU (1) AU699527B2 (es)
CA (1) CA2235615C (es)
DE (1) DE69634205T2 (es)
ES (1) ES2239775T3 (es)
RU (1) RU2214787C2 (es)
WO (1) WO1997015230A1 (es)

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US6371923B1 (en) * 1999-12-07 2002-04-16 Edwards Lifesciences Corporation Time-domain system and method for relaxation measurement and estimation of indicator dilution for continuous estimation and display of cardiac ejection fraction and end diastolic volume
US6575905B2 (en) * 2000-09-22 2003-06-10 Knobbe, Lim & Buckingham Method and apparatus for real-time estimation of physiological parameters
US6895352B2 (en) * 2002-03-12 2005-05-17 Itt Manufacturing Enterprises, Inc. Simultaneous rapid open and closed loop bode plot measurement using a binary pseudo-random sequence
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US7474985B1 (en) * 2003-04-25 2009-01-06 The United States Of America As Represented By The Secretary Of The Navy Method and system for detecting changes in data
US7452333B2 (en) * 2003-12-05 2008-11-18 Edwards Lifesciences Corporation Arterial pressure-based, automatic determination of a cardiovascular parameter
US7220230B2 (en) * 2003-12-05 2007-05-22 Edwards Lifesciences Corporation Pressure-based system and method for determining cardiac stroke volume
US7422562B2 (en) * 2003-12-05 2008-09-09 Edwards Lifesciences Real-time measurement of ventricular stroke volume variations by continuous arterial pulse contour analysis
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US7632235B1 (en) * 2004-11-22 2009-12-15 Pacesetter, Inc. System and method for measuring cardiac output via thermal dilution using an implantable medical device with an external ultrasound power delivery system
US7651466B2 (en) 2005-04-13 2010-01-26 Edwards Lifesciences Corporation Pulse contour method and apparatus for continuous assessment of a cardiovascular parameter
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US20070167864A1 (en) * 2005-11-29 2007-07-19 Lopez George A Cardiac output measurement devices and methods
US8014650B1 (en) * 2006-01-24 2011-09-06 Adobe Systems Incorporated Feedback of out-of-range signals
US7761150B2 (en) * 2006-03-29 2010-07-20 Medtronic, Inc. Method and apparatus for detecting arrhythmias in a medical device
US8905939B2 (en) 2006-07-13 2014-12-09 Edwards Lifesciences Corporation Method and apparatus for continuous assessment of a cardiovascular parameter using the arterial pulse pressure propagation time and waveform
ES2361134T1 (es) * 2006-12-22 2011-06-14 Pulsion Medical Systems Ag Aparato de monitorización de pacientes para determinar un parámetro que representa un compartimiento de volumen intratorácico de un paciente.
US20080242955A1 (en) * 2007-03-30 2008-10-02 Kimmo Uutela Reliability in determination of clinical state of a subject
US8262579B2 (en) * 2007-05-16 2012-09-11 Massachusetts Institute Of Technology System and method for prediction and detection of circulatory shock
WO2008144490A1 (en) * 2007-05-16 2008-11-27 Massachusetts Instutute Of Technology Systems and methods for model-based estimation of cardiac ejection fraction, cardiac contractility, and ventricular end-diastolic volume
WO2008144404A1 (en) * 2007-05-16 2008-11-27 Massachusetts Instutute Of Technology Systems and methods for model-based estimation of cardiac output and total peripheral resistance
US20090122853A1 (en) * 2007-11-12 2009-05-14 Acorn Technologies, Inc. Channel tracking methods for subspace equalizers
US20090270739A1 (en) * 2008-01-30 2009-10-29 Edwards Lifesciences Corporation Real-time detection of vascular conditions of a subject using arterial pressure waveform analysis
WO2009129158A1 (en) * 2008-04-15 2009-10-22 Massachusetts Institute Of Technology Flow estimation
EP2493373B1 (en) 2009-10-29 2016-03-16 CNSystems Medizintechnik AG Apparatus and methods for enhancing and analyzing signals from a continuous non-invasive blood pressure measurement device
CN102834047A (zh) 2010-01-29 2012-12-19 爱德华兹生命科学公司 在心血管参数确定中不规则心动周期影响的排除
US9176671B1 (en) 2011-04-06 2015-11-03 P4tents1, LLC Fetching data between thread execution in a flash/DRAM/embedded DRAM-equipped system
US8930647B1 (en) 2011-04-06 2015-01-06 P4tents1, LLC Multiple class memory systems
US9170744B1 (en) 2011-04-06 2015-10-27 P4tents1, LLC Computer program product for controlling a flash/DRAM/embedded DRAM-equipped system
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Also Published As

Publication number Publication date
CN1204241A (zh) 1999-01-06
JPH11513910A (ja) 1999-11-30
RU2214787C2 (ru) 2003-10-27
AU699527B2 (en) 1998-12-03
DE69634205D1 (de) 2005-02-24
EP0862379B1 (en) 2005-01-19
WO1997015230A1 (en) 1997-05-01
JP3701285B2 (ja) 2005-09-28
AU7522196A (en) 1997-05-15
JP2004000653A (ja) 2004-01-08
US5687733A (en) 1997-11-18
CA2235615A1 (en) 1997-05-01
CA2235615C (en) 2001-05-08
DE69634205T2 (de) 2005-07-07
CN1130166C (zh) 2003-12-10
EP0862379A1 (en) 1998-09-09

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