CA2251718A1 - Process for monitoring patients with chronic congestive heart failure - Google Patents

Process for monitoring patients with chronic congestive heart failure

Info

Publication number
CA2251718A1
CA2251718A1 CA002251718A CA2251718A CA2251718A1 CA 2251718 A1 CA2251718 A1 CA 2251718A1 CA 002251718 A CA002251718 A CA 002251718A CA 2251718 A CA2251718 A CA 2251718A CA 2251718 A1 CA2251718 A1 CA 2251718A1
Authority
CA
Canada
Prior art keywords
values
heart failure
congestive heart
chf
indicia
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.)
Granted
Application number
CA002251718A
Other languages
French (fr)
Other versions
CA2251718C (en
Inventor
Charles L. Feldman
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.)
Zymed Medical Instrumentation Inc
Original Assignee
Zymed Medical Instrumentation, Inc.
Charles L. Feldman
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 Zymed Medical Instrumentation, Inc., Charles L. Feldman filed Critical Zymed Medical Instrumentation, Inc.
Publication of CA2251718A1 publication Critical patent/CA2251718A1/en
Application granted granted Critical
Publication of CA2251718C publication Critical patent/CA2251718C/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61N—ELECTROTHERAPY; MAGNETOTHERAPY; RADIATION THERAPY; ULTRASOUND THERAPY
    • A61N1/00—Electrotherapy; Circuits therefor
    • A61N1/02—Details
    • A61N1/08—Arrangements or circuits for monitoring, protecting, controlling or indicating
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61B—DIAGNOSIS; SURGERY; IDENTIFICATION
    • A61B5/00—Measuring for diagnostic purposes; Identification of persons
    • A61B5/05—Detecting, measuring or recording for diagnosis by means of electric currents or magnetic fields; Measuring using microwaves or radio waves 
    • A61B5/053—Measuring electrical impedance or conductance of a portion of the body
    • 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
    • A61N1/36—Applying electric currents by contact electrodes alternating or intermittent currents for stimulation
    • A61N1/362—Heart stimulators
    • A61N1/3627—Heart stimulators for treating a mechanical deficiency of the heart, e.g. congestive heart failure or cardiomyopathy

Abstract

In a process (10) for monitoring patients with chronic congestive heart failure, a high frequency current is passed between electrodes (20) applied to two limbs of a patient. The current, voltage and phase angle between the measured current and voltage are measured (18) to enable the calculation of congestive heart failure (CHF) indicia values. The calculated CHF indicia values are then compared with baseline values established when the patient is in a known, stable condition. Intervention is initiated if the differences between the calculated CHF indicia values and the baseline values are outside of established tolerances. The CHF indicia values may include resistance, reactance, impedance, total body water and extracellular water. Moreover, the indicia values may include a figure of merit indicative of the hydration status of the patient.
CA002251718A 1996-04-23 1997-04-22 Process for monitoring patients with chronic congestive heart failure Expired - Lifetime CA2251718C (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
US1601596P 1996-04-23 1996-04-23
US60/016,015 1996-04-23
PCT/US1997/006466 WO1997039792A1 (en) 1996-04-23 1997-04-22 Process for monitoring patients with chronic congestive heart failure

Publications (2)

Publication Number Publication Date
CA2251718A1 true CA2251718A1 (en) 1997-10-30
CA2251718C CA2251718C (en) 2001-07-10

Family

ID=21774907

Family Applications (1)

Application Number Title Priority Date Filing Date
CA002251718A Expired - Lifetime CA2251718C (en) 1996-04-23 1997-04-22 Process for monitoring patients with chronic congestive heart failure

Country Status (5)

Country Link
EP (1) EP0921842A4 (en)
JP (1) JP3325273B2 (en)
AU (1) AU2804397A (en)
CA (1) CA2251718C (en)
WO (1) WO1997039792A1 (en)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6607485B2 (en) 1999-06-03 2003-08-19 Cardiac Intelligence Corporation Computer readable storage medium containing code for automated collection and analysis of patient information retrieved from an implantable medical device for remote patient care
US7134996B2 (en) 1999-06-03 2006-11-14 Cardiac Intelligence Corporation System and method for collection and analysis of patient information for automated remote patient care
US6270457B1 (en) 1999-06-03 2001-08-07 Cardiac Intelligence Corp. System and method for automated collection and analysis of regularly retrieved patient information for remote patient care
US6312378B1 (en) 1999-06-03 2001-11-06 Cardiac Intelligence Corporation System and method for automated collection and analysis of patient information retrieved from an implantable medical device for remote patient care
US6221011B1 (en) 1999-07-26 2001-04-24 Cardiac Intelligence Corporation System and method for determining a reference baseline of individual patient status for use in an automated collection and analysis patient care system
CA2314517A1 (en) 1999-07-26 2001-01-26 Gust H. Bardy System and method for determining a reference baseline of individual patient status for use in an automated collection and analysis patient care system
CA2314513A1 (en) 1999-07-26 2001-01-26 Gust H. Bardy System and method for providing normalized voice feedback from an individual patient in an automated collection and analysis patient care system
US7127290B2 (en) * 1999-10-01 2006-10-24 Cardiac Pacemakers, Inc. Cardiac rhythm management systems and methods predicting congestive heart failure status
US6440066B1 (en) 1999-11-16 2002-08-27 Cardiac Intelligence Corporation Automated collection and analysis patient care system and method for ordering and prioritizing multiple health disorders to identify an index disorder
US6411840B1 (en) 1999-11-16 2002-06-25 Cardiac Intelligence Corporation Automated collection and analysis patient care system and method for diagnosing and monitoring the outcomes of atrial fibrillation
US6368284B1 (en) 1999-11-16 2002-04-09 Cardiac Intelligence Corporation Automated collection and analysis patient care system and method for diagnosing and monitoring myocardial ischemia and outcomes thereof
US6336903B1 (en) 1999-11-16 2002-01-08 Cardiac Intelligence Corp. Automated collection and analysis patient care system and method for diagnosing and monitoring congestive heart failure and outcomes thereof
US8369937B2 (en) 1999-11-16 2013-02-05 Cardiac Pacemakers, Inc. System and method for prioritizing medical conditions
US8025624B2 (en) 2004-02-19 2011-09-27 Cardiac Pacemakers, Inc. System and method for assessing cardiac performance through cardiac vibration monitoring
US7386345B2 (en) 2005-01-27 2008-06-10 Cardiac Pacemakers, Inc. Apparatus and method for temporary treatment of acute heart failure decompensation
US10631745B2 (en) * 2008-09-22 2020-04-28 Cheetah Medical, Inc. System and method for determining blood flow
US9999352B2 (en) 2013-09-27 2018-06-19 General Electric Company System and method for determining a hydration level of a tissue region
EP3416549A4 (en) * 2016-02-16 2019-09-18 Impedimed Limited Heart failure indicator
KR101823496B1 (en) 2016-08-22 2018-01-31 조선대학교산학협력단 Wearable device for measuring edema index and method of measuring edema index using thereof
WO2019189150A1 (en) * 2018-03-26 2019-10-03 テルモ株式会社 Diagnostic support system, diagnostic support method, and diagnostic support program
KR102484225B1 (en) * 2020-10-15 2023-01-03 계명대학교 산학협력단 A patch type impedance measurement device and method

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4899758A (en) * 1986-01-31 1990-02-13 Regents Of The University Of Minnesota Method and apparatus for monitoring and diagnosing hypertension and congestive heart failure
US5334222A (en) * 1992-11-03 1994-08-02 Cardiac Pacemakers, Inc. Cardiac stimulating apparatus and method for heart failure therapy
US5560368A (en) * 1994-11-15 1996-10-01 Berger; Ronald D. Methodology for automated QT variability measurement

Also Published As

Publication number Publication date
JP2000510005A (en) 2000-08-08
JP3325273B2 (en) 2002-09-17
WO1997039792A1 (en) 1997-10-30
AU2804397A (en) 1997-11-12
EP0921842A4 (en) 1999-12-15
EP0921842A1 (en) 1999-06-16
CA2251718C (en) 2001-07-10

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Legal Events

Date Code Title Description
EEER Examination request
MKEX Expiry

Effective date: 20170424