- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT02083419
Cardiac Resynchronization Therapy (CRT) and Left Ventricular Assist Devices (LVAD) Therapy
February 7, 2017 updated by: University of Florida
Study of the Effects of Cardiac Resynchronization Therapy (CRT) and Left Ventricular Assist Devices (LVAD) Therapy
Cardiac resynchronization therapy (CRT) or biventricular pacing is a useful treatment for heart failure and those suffering from arrhythmias.
The purpose of this research study is to determine the effect left-ventricular pacing has on patients who have a ventricular assist device.
Study Overview
Detailed Description
As part of the study participation the following two visits will be completed as listed below.
Baseline Visit: The following procedures will be conducted at this visit:
- Review of past medical history and medical records;
- A limited echocardiogram will be performed. This is a test that uses ultrasound to evaluate the size of the heart and how well the heart is pumping blood.
- The investigators will use a computer-like device, called a programmer, that "talks" to the CRT device using radio signals or by using wanded telemetry to adjust the CRT device's programmed settings. The left ventricular lead of your device will be turned off. The defibrillator will continue to function and back-up pacing will continue if needed.
- Complete the Kansas City Cardiomyopathy Questionnaire (KCCQ).
- A 6 minute walk test will be done.
Regularly Scheduled Clinic Visit: At the next regularly scheduled Left Ventricular Assist Devices (LVAD) clinic visit, approximately 4 weeks after the baseline visit, the following procedures will be done:
- A second limited echocardiogram.
- The investigator will use a computer-like device, called a programmer, that "talks" to the CRT device using radio signals or by using a wand to obtain a report that will give the current program settings and any heart rhythm events that have occurred since the last CRT device was checked. Once the information from the CRT is obtained, the study doctor will reprogram the device to its original settings.
- Complete the Kansas City Cardiomyopathy Questionnaire (KCCQ).
- A 6 minute walk test will be done.
Study Type
Observational
Enrollment (Actual)
6
Contacts and Locations
This section provides the contact details for those conducting the study, and information on where this study is being conducted.
Study Locations
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Florida
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Gainesville, Florida, United States, 32610
- University of Florida
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Participation Criteria
Researchers look for people who fit a certain description, called eligibility criteria. Some examples of these criteria are a person's general health condition or prior treatments.
Eligibility Criteria
Ages Eligible for Study
18 years and older (ADULT, OLDER_ADULT)
Accepts Healthy Volunteers
No
Genders Eligible for Study
All
Sampling Method
Non-Probability Sample
Study Population
Adults with ventricular dysfunction, dyssynchrony, functional capacity presence of arrhythmia.
LVAD patients undergo 6 minute walk testing and complete a quality of life questionnaire routinely as part of their care on our LVAD clinic.
Additionally, periodic echcoardiography is obtained to determine LVAD dynamics and ventrocular dimensions.
We will utilize this information for our study, as well as information from their cardiac resynchronization devices, which is part of routine care for patietns with pacemakers and defibrillators.
Description
Inclusion Criteria:
- Presence of LVAD support and CRT device with working LV lead in patients > 18years of age
- Left ventricular pacing at time of enrollment
Exclusion Criteria:
- LV lead dysfunction
- Prior AV node ablation
- Presence of total heart block
- Presence of significant bradycardia/lack of underlying rhythm
- Inability to complete 6 minute walk test
- Inability to return to clinic for repeat assessment
- Any LVAD programmed speed change within the prior 30 days
- Any CRT programming changes within the prior 30 days
Study Plan
This section provides details of the study plan, including how the study is designed and what the study is measuring.
How is the study designed?
Design Details
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
---|---|
LVAD CRT
The following procedures will be performed: limited echocardiogram, an adjustment to the CRT device's programmed settings, follow-up in 30 days to adjust the CRT device's programmed settings.
In addition, quality of life questionnaires will be filled out and a 6 minute walk test will be completed.
|
The following procedures will be performed: limited echocardiogram, an adjustment to the CRT device's programmed settings, follow-up in 30 days to adjust the CRT device's programmed settings.
In addition, quality of life questionnaires will be filled out and a 6 minute walk test will be completed.
|
What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
---|---|---|
Change in echocardiographic parameters
Time Frame: Change in baseline to 30 days
|
A comparison of the echocardiogram completed at enrollment and at 30 days.
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Change in baseline to 30 days
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6 minute walk distance
Time Frame: Change in baseline to 30 days
|
A trained staff member will supervise participants in the completion of a 6 minute walk test.
They will be instructed to walk on a level surface, on a clearly marked indoor course.
heart rate and oxygen level will be monitored.
The total distance completed at the end of 6 minutes will be noted.
|
Change in baseline to 30 days
|
Quality of Life
Time Frame: Change in baseline to 30 days
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A comparison of the questionnaires completed at enrollment and at 30 days.
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Change in baseline to 30 days
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Number of Ventricular Tachycardia Episodes
Time Frame: Change in baseline to 30 days
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At baseline and again at 30 days CRT device interrogation will be done to count the number of ventricular tachycardia episodes with LV pacing on and off.
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Change in baseline to 30 days
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Collaborators and Investigators
This is where you will find people and organizations involved with this study.
Sponsor
Study record dates
These dates track the progress of study record and summary results submissions to ClinicalTrials.gov. Study records and reported results are reviewed by the National Library of Medicine (NLM) to make sure they meet specific quality control standards before being posted on the public website.
Study Major Dates
Study Start (ACTUAL)
April 28, 2014
Primary Completion (ACTUAL)
January 1, 2017
Study Completion (ACTUAL)
February 2, 2017
Study Registration Dates
First Submitted
March 4, 2014
First Submitted That Met QC Criteria
March 7, 2014
First Posted (ESTIMATE)
March 11, 2014
Study Record Updates
Last Update Posted (ESTIMATE)
February 8, 2017
Last Update Submitted That Met QC Criteria
February 7, 2017
Last Verified
February 1, 2017
More Information
Terms related to this study
Additional Relevant MeSH Terms
Other Study ID Numbers
- IRB201300694
This information was retrieved directly from the website clinicaltrials.gov without any changes. If you have any requests to change, remove or update your study details, please contact register@clinicaltrials.gov. As soon as a change is implemented on clinicaltrials.gov, this will be updated automatically on our website as well.
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