NCT00289276

Brief Summary

Heart failure is a progressive disease that decreases the pumping action of the heart. This may cause a backup of fluid in the heart and may result in heart beat changes. Using very low electrical pulses that travel across the inside of the chest cavity, thoracic fluid status monitoring (OptiVol™) can measure the level of resistance to the electrical pulses, which indicates the level of fluid in the chest. The purpose of this study is to collect information related to fluid build up in the chest of subjects with heart failure.

Trial Health

85
On Track

Trial Health Score

Automated assessment based on enrollment pace, timeline, and geographic reach

Enrollment
156

participants targeted

Target at P75+ for not_applicable

Geographic Reach
3 countries

16 active sites

Status
completed

Health score is calculated from publicly available data and should be used for screening purposes only.

Trial Relationships

Click on a node to explore related trials.

Study Timeline

Key milestones and dates

Study Start

First participant enrolled

November 1, 2003

Completed
2.3 years until next milestone

First Submitted

Initial submission to the registry

February 7, 2006

Completed
2 days until next milestone

First Posted

Study publicly available on registry

February 9, 2006

Completed
2.1 years until next milestone

Primary Completion

Last participant's last visit for primary outcome

April 1, 2008

Completed
2.5 years until next milestone

Results Posted

Study results publicly available

September 28, 2010

Completed
Last Updated

October 13, 2010

Status Verified

October 1, 2010

Enrollment Period

4.4 years

First QC Date

February 7, 2006

Results QC Date

April 1, 2009

Last Update Submit

October 5, 2010

Conditions

Keywords

CardiomyopathyVentricular Ejection FractionCongestive Heart FailureImpedance

Outcome Measures

Primary Outcomes (1)

  • Number of Subjects With at Least 30 Days of Daily Impedance Measurements

    Impedance measurements were presented graphically over time in relation to clinical events for all subjects with at least 30 days of follow-up and impedance data collected during the follow-up period.

    Up to 36 months.

Secondary Outcomes (3)

  • Change in Thoracic Impedance Associated With Heart Failure (HF) Hospitalization for an Exacerbation of HF

    3 days pre-admission and 3 days post-discharge

  • Change in Thoracic Impedance Associated With Heart Failure (HF) Outpatient Treatment of an Exacerbation of HF

    1 day pre and 1 day post-outpatient visit

  • Number of Adverse Events

    From enrollment to study exit (up to 36 months).

Interventions

Thoracic Fluid Status Software downloaded on all subjects enrolled in the trial

Eligibility Criteria

Age18 Years+
Sexall
Healthy VolunteersNo
Age GroupsAdult (18-64), Older Adult (65+)

You may qualify if:

  • Subjects with one of the following implantable cardioverter defibrillators (ICDs): InSync Marquis™, InSync II Marquis™, Marquis® DR, or InSync III Marquis™.
  • Subjects with an ICD placed in the upper part of the left or right side of their chest.
  • Subjects with a lead (flexible wire that sends electrical signals from the ICD directly to the heart tissue) that is inserted through a vein and placed in the right ventricle (RV) of the heart (a transvenous RV lead).
  • Subjects who underwent the ICD implant procedure, or any readjusting of the ICD, 30 days or more prior to enrolling in the study.

You may not qualify if:

  • Subjects who are already enrolled in another clinical study.
  • Subjects who have received a heart transplant.
  • Subjects who are unable or unwilling to follow the study schedule of visits.

Contact the study team to confirm eligibility.

Sponsors & Collaborators

Study Sites (16)

Alaska Cardiovascular Research Foundation

Anchorage, Alaska, 99508, United States

Location

Palm Beach Heart Institute

Atlantis, Florida, 33462, United States

Location

Fort Wayne Cardiology

Fort Wayne, Indiana, 46805, United States

Location

Genesis Medical Center

Davenport, Iowa, 52803, United States

Location

Michigan Cardiovascular Institute

Saginaw, Michigan, 48601, United States

Location

North Shore University Hospital

Manhasset, New York, 11030, United States

Location

Duke University Medical Center

Durham, North Carolina, 27710, United States

Location

Cleveland Clinic Foundation Department of Hear Failure/Transplantation

Cleveland, Ohio, 44195, United States

Location

The Ohio State University Hospital

Columbus, Ohio, 43210, United States

Location

The Pavillion at Doylestown Hospital

Doylestown, Pennsylvania, 18901, United States

Location

Texas Cardiac Arrhythmia Research

Austin, Texas, 78758, United States

Location

Intermountain Medical Center

Salt Lake City, Utah, 84157, United States

Location

University of Calgary/Foothills Hospital

Calgary, Alberta, T2N 4N1, Canada

Location

Kingston General Hospital

Kingston, Ontario, K7V 2V7, Canada

Location

Queen Mary Hospital

Pok Fu Lam, Hong Kong, China

Location

Prince of Wales Hospital/The Chinese University of Hong Kong

Shatin, Hong Kong, China

Location

MeSH Terms

Conditions

Heart FailureCardiomyopathiesDyspneaPulmonary EdemaHeart Diseases

Condition Hierarchy (Ancestors)

Cardiovascular DiseasesRespiration DisordersRespiratory Tract DiseasesSigns and Symptoms, RespiratorySigns and SymptomsPathological Conditions, Signs and SymptomsLung Diseases

Limitations and Caveats

This was a characterization study with no descriptive statistical analysis. The results reported were counts of subjects with impedance data available as applicable for each objective.

Results Point of Contact

Title
CRDM Core Clinical
Organization
Medtronic CRDM Clinical Research

Publication Agreements

PI is Sponsor Employee
No
Restriction Type
OTHER
Restrictive Agreement
Yes

Study Design

Study Type
interventional
Phase
not applicable
Allocation
NON RANDOMIZED
Masking
DOUBLE
Who Masked
PARTICIPANT, INVESTIGATOR
Purpose
DIAGNOSTIC
Intervention Model
SINGLE GROUP
Sponsor Type
INDUSTRY

Study Record Dates

First Submitted

February 7, 2006

First Posted

February 9, 2006

Study Start

November 1, 2003

Primary Completion

April 1, 2008

Last Updated

October 13, 2010

Results First Posted

September 28, 2010

Record last verified: 2010-10

Locations