- ICH GCP
- US Clinical Trials Registry
- Clinical Trial NCT01761162
ProMRI Study of the Entovis Pacemaker System
Study Overview
Status
Intervention / Treatment
Study Type
Enrollment (Actual)
Contacts and Locations
Study Locations
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Arizona
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Scottsdale, Arizona, United States, 85251
- Arizona Arrhythmia Consultants
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California
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Concord, California, United States, 94520
- John Muir Medical Center
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Newport Beach, California, United States, 92663
- Hoag Hospital
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Rancho Mirage, California, United States, 92270
- Eisenhower Medical Center
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Connecticut
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New Haven, Connecticut, United States, 06510
- Yale - New Haven Hospital
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District of Columbia
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Washington, District of Columbia, United States, 20010
- Washington Hospital Center
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Indiana
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Valparaiso, Indiana, United States, 46383
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Iowa
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Iowa City, Iowa, United States, 52242
- University of Iowa Hospitals and Clinics
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Louisiana
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Lafayette, Louisiana, United States, 70503
- Louisiana Heart Rhythm Specialists
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Maryland
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Cumberland, Maryland, United States, 21502
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Massachusetts
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Boston, Massachusetts, United States, 02114
- Massachusetts General Hospital
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Burlington, Massachusetts, United States, 01805
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Worcester, Massachusetts, United States, 01655
- University of Massachusetts Medical School
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Michigan
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Ypsilanti, Michigan, United States, 48197
- Saint Joseph Mercy Medical Center
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Missouri
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Kansas City, Missouri, United States, 64132
- Research Medical Center
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Saint Louis, Missouri, United States, 63110
- Washington University
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New Jersey
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Camden, New Jersey, United States, 08103
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New York
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Flushing, New York, United States, 11355
- New York Hospital Queens
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New York, New York, United States, 10016
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North Carolina
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Winston-Salem, North Carolina, United States, 27157
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Ohio
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Toledo, Ohio, United States, 46306
- Toledo Hospital
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Pennsylvania
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Langhorne, Pennsylvania, United States, 19047
- Saint Mary Medical Center
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Rhode Island
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Providence, Rhode Island, United States, 02903
- Rhode Island Hospital
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South Carolina
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Greenville, South Carolina, United States, 29601
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Virginia
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Richmond, Virginia, United States, 23230
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Participation Criteria
Eligibility Criteria
Ages Eligible for Study
Accepts Healthy Volunteers
Genders Eligible for Study
Sampling Method
Study Population
Description
Inclusion Criteria:
The following initial inclusion criteria must be met for a subject to be enrolled and considered for the MRI-procedure:
- Age greater than 18 years
- Subject body height greater than 140 cm (4' 7")
- Able and willing to complete MRI testing
- Able to provide written informed consent
- Available for follow-up visit at the study site
- Implanted with a pacemaker system consisting only of an Entovis pacemaker (DR-T, SR-T) and one or two Setrox S 53 or Setrox S 60 pacemaker lead(s). (No leads other than Setrox S (53 or 60 cm) leads may be implanted. This includes lead extensions or abandoned leads in the subject.)
- Pacemaker implanted pectorally
- All pacemaker system components implanted, repositioned, or exchanged at least 5 weeks prior to enrollment
- Underling rhythm identifiable during sensing test
- All pacing thresholds are measureable and are less than or equal to 2.0 V @0.4 ms
- Absence of phrenic nerve stimulation at 4.8V @ 1.0 ms
- Pacing impedance is between 200 and 1500 ohm
- Able and willing to use the Cardio Messenger
At the pre-MRI procedure, the following procedure-related criteria must be met for the subject to undergo the MRI scan:
- Absence of phrenic nerve stimulation at 4.8V @ 1.0 ms
- |pacing threshold at Pre-MRI follow-up - pacing threshold at baseline| ≤ 0.5 V
- All pacing thresholds are measureable and are ≤ 2.0 V @ 0.4 ms
- The pacemaker system has been implanted for at least 6 weeks.
- Subject did not have a pacemaker or lead explant, exchange or reposition in the previous 6 weeks.
- All lead impedances are between 200 and 1500 ohm.
- Battery status is at least 30% of capacity
Exclusion Criteria:
- Enrolled in any other clinical study
For pacemaker systems that include an atrial lead, subjects with either
- Persistent atrial arrhythmia (lasting longer than 7 days or requiring cardioversion)
- Permanent atrial arrhythmia
- Life expectancy of less than three months
- Pregnancy
- Cardiac surgery expected in the next three months
Implanted with other medical devices that may interact with MRI, such as:
- abandoned pacemaker/ICD leads
- lead extensions
- mechanical valves
- other active medical devices
- non-MRI compatible devices
- other metallic artifacts/components in body that may interact with MRI
Study Plan
How is the study designed?
Design Details
Cohorts and Interventions
Group / Cohort |
Intervention / Treatment |
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Pacemaker Therapy
Patients with a ProMRI Pacemaker System
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Bradycardia Slow Heart Beat
MRI scan of head and lower back.
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What is the study measuring?
Primary Outcome Measures
Outcome Measure |
Measure Description |
Time Frame |
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MRI and Pacing System Related Serious Adverse Device Effect (SADE) Free Rate
Time Frame: 1 Month Post-MRI
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1 Month Post-MRI
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Percentage of Participants Free of Atrial Pacing Threshold Rise
Time Frame: Pre-MRI, 1 Month Post-MRI
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Evaluate the percentage of atrial pacing leads free of pacing threshold increase between the pre-MRI and one-month post-MRI follow-up.
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Pre-MRI, 1 Month Post-MRI
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Percentage of Participants Free of Ventricular Pacing Threshold Rise
Time Frame: Pre-MRI, 1 Month Post-MRI
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Evaluate the percentage of ventricular pacing leads free of pacing threshold increase between the Pre-MRI and one-month post-MRI follow-up.
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Pre-MRI, 1 Month Post-MRI
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Percentage of Participants Free of P-wave Sensing Attenuation
Time Frame: Pre-MRI, 1 Month Post-MRI
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Evaluate the percentage of subjects free of P-wave attenuation between the pre-MRI and one-month post-MRI follow-up.
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Pre-MRI, 1 Month Post-MRI
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Percentage of Participants Free of R-wave Sensing Attenuation
Time Frame: Pre-MRI, 1 Month Post-MRI
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Evaluate the percentage of subjects free of R-wave attenuation between the pre-MRI and one-month post-MRI follow-up.
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Pre-MRI, 1 Month Post-MRI
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Collaborators and Investigators
Sponsor
Publications and helpful links
Study record dates
Study Major Dates
Study Start
Primary Completion (ACTUAL)
Study Completion (ACTUAL)
Study Registration Dates
First Submitted
First Submitted That Met QC Criteria
First Posted (ESTIMATE)
Study Record Updates
Last Update Posted (ESTIMATE)
Last Update Submitted That Met QC Criteria
Last Verified
More Information
Terms related to this study
Other Study ID Numbers
- G120226
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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