Clinical Trials Logo

Clinical Trial Details — Status: Completed

Administrative data

NCT number NCT01576016
Other study ID # 60028820
Secondary ID
Status Completed
Phase N/A
First received
Last updated
Start date March 30, 2012
Est. completion date February 2, 2018

Study information

Verified date October 2020
Source Abbott Medical Devices
Contact n/a
Is FDA regulated No
Health authority
Study type Interventional

Clinical Trial Summary

The MRI Study is a prospective, multi-center, clinical study designed to evaluate the safety and efficacy of the Accent MRI™ System in a patient population indicated for implant of a pacemaker within and outside of the MRI environment.


Description:

The MRI Study is a prospective, multi-center, clinical study designed to evaluate the safety and efficacy of the Accent MRI System in a patient population indicated for implant of a pacemaker within and outside of the MRI environment. The study consisted of two phases, a Lead Safety Phase which evaluated the safety of the Tendril MRI lead, and an MRI Phase which evaluated the safety and efficacy of the Accent MRI pacemaker system in an MRI environment. The safety and efficacy of the Accent MRI pacemaker and Tendril MRI lead will be evaluated as described below: Lead Safety Safety of the Tendril MRI™ lead will be evaluated in terms of freedom from right atrial (RA) and right ventricle (RV) lead-related complications at implant to 2 months (acute timeframe), and at the 2 through the 12 month visit (chronic timeframe). MRI Safety The safety of the Accent MRI™ system will be evaluated in terms of freedom from MRI scan related complications in the month following the MRI scan. Lead Efficacy Efficacy of the Tendril MRI™ lead will be evaluated in terms of the change in atrial and ventricular capture and sensing thresholds before and after the MRI scan. MRI Efficacy Efficacy of the Tendril MR lead will be evaluated in terms of the change in bipolar atrial and ventricular capture and sensing thresholds before and after the MRI scan. Secondary Endpoints Safety Safety of the Accent MRI™ system will be evaluated in terms of freedom from system-related complications through the 12 month visit. Efficacy Efficacy of the Tendril MRI™ lead will be evaluated in terms of the atrial and ventricular capture thresholds at the MRI Visit.


Recruitment information / eligibility

Status Completed
Enrollment 950
Est. completion date February 2, 2018
Est. primary completion date February 2, 2018
Accepts healthy volunteers No
Gender All
Age group N/A and older
Eligibility Inclusion Criteria: Eligible patients will meet all of the following: 1. Have an approved indication per American College of Cardiology (ACC)/American Heart Association (AHA)/Heart Rhythm Society (HRS) guidelines for implantation of a pacemaker 2. Will receive a new pacemaker and lead 3. Be willing to undergo an elective MRI scan without sedation 4. Be able to provide informed consent for study participation (legal guardian is NOT acceptable) 5. Be willing and able to comply with the prescribed follow-up tests and schedule of evaluations 6. Is not contraindicated for an MRI scan (per the pre-MRI safety screening form) Exclusion Criteria: Patients will be excluded if they meet any of the following: 1. Are medically indicated for an MRI scan at the time of enrollment 2. Have an existing pacemaker or implantable cardioverter defibrillator (ICD). A new pacemaker and lead is required for enrollment 3. Have an existing active/inactive implanted medical device, e.g., neurostimulator, infusion pump, etc. 4. Have a non-MRI compatible device or material implanted (e.g., intracranial aneurysm clip, non-MRI compatible devices or material, metals or alloys, etc.) 5. Have a lead extender or adaptor 6. Be unable to fit in MRI bore; will come into contact with the magnet façade inside the MRI bore. 7. Have a prosthetic tricuspid heart valve 8. Are currently participating in a clinical investigation that includes an active treatment arm 9. Are allergic to dexamethasone sodium phosphate (DSP) 10. Are pregnant or planning to become pregnant during the duration of the study 11. Have a life expectancy of less than 12 months due to any condition 12. Patients with exclusion criteria required by local law (e.g., age) 13. Are unable to comply with the follow up schedule

Study Design


Related Conditions & MeSH terms

  • Adverse Effect of MRI on an Implanted Pacemaker
  • Adverse Effect of MRI on an Implanted Pacemaker Lead

Intervention

Device:
Accent MRI system (lead safety)
Patients implanted with an Accent MRI system
Accent MRI system (with MRI scan)
Patients implanted with an Accent MRI system will receive an MRI scan

Locations

Country Name City State
Australia St. Andrews Hospital Adelaide South Australia
Belgium Cliniques Universitaires Saint Luc Brussels B Cap R
Finland Kuopio University Hospital Kuopio East Finland
Netherlands Diakonessenhuis Utrecht Utrecht
United States Abington Medical Specialists Abington Pennsylvania
United States Athens Cardiology Group, PC Athens Georgia
United States Atlanta Heart Specialist Atlanta Georgia
United States Medical Specialists of the Palm Beaches Atlantis Florida
United States Austin Heart Austin Texas
United States Central Cardiology Bakersfield California
United States University Hospital of Alabama at Birmingham Birmingham Alabama
United States Kitsap Cardiology Consultants Bremerton Washington
United States Raymond Schaerf, MD Burbank California
United States University of North Carolina at Chapel Hill Chapel Hill North Carolina
United States Medical University of South Carolina Charleston South Carolina
United States PMG Research of Charleston, LLC Charleston South Carolina
United States Mid Carolina Cardiology Charlotte North Carolina
United States Martha Jefferson Hospital Charlottesville Virginia
United States The Cleveland Clinic Foundation Cleveland Ohio
United States Columbus Cardiovascular Associates Columbus Ohio
United States The Ohio State University Columbus Ohio
United States John Muir Medical Center Concord California
United States Aurora Denver Cardiology Associates Denver Colorado
United States EMH Regional Medical Center Elyria Ohio
United States St. Jude Hospital Fullerton California
United States Glendale Adventist Medical Center Glendale California
United States Spectrum Health Grand Rapids Michigan
United States Heart Center Research Huntsville Alabama
United States St. Luke's Hospital Kansas City Missouri
United States Scripps Green Hospital La Jolla California
United States Watson Clinic Center Lakeland Florida
United States Thoracic Cardio Healthcare Foundation Lansing Michigan
United States Central Baptist Hospital Lexington Kentucky
United States Arkansas Heart Hospital Little Rock Arkansas
United States Baptist Health Medical Center Little Rock Arkansas
United States South Denver Cardiology Associates PC Littleton Colorado
United States Medical Center of the Rockies Loveland Colorado
United States Virginia Cardiovascular Associates, PC Manassas Virginia
United States Aurora Medical Group Milwaukee Wisconsin
United States Minneapolis Heart Institute Minneapolis Minnesota
United States Memorial Medical Center Modesto California
United States Ochsner Medical Center New Orleans Louisiana
United States Premier Cardiology, Inc / Hoag Hospital Newport Beach California
United States Sentara Norfolk General Hospital Norfolk Virginia
United States Integris Baptist Medical Center Oklahoma City Oklahoma
United States Alegent Creighton Health Omaha Nebraska
United States Florida Hospital Orlando Orlando Florida
United States Orlando Health Orlando Florida
United States Arizona Arrhythmia Research Center Phoenix Arizona
United States Allegheny Singer Research Institute Pittsburgh Pennsylvania
United States Desert Cardiology Consultants Rancho Mirage California
United States University of Rochester Medical Center Rochester New York
United States Brevard Cardiovascular Research Associates Rockledge Florida
United States Mercy Hospital Northwest Arkansas Rogers Arkansas
United States Mercy General Hospital Sacramento California
United States Sutter Memorial Hospital Sacramento California
United States Missouri Baptist Medical Center Saint Louis Missouri
United States Washington University School of Medicine Saint Louis Missouri
United States South Texas Cardiovascular Consultants San Antonio Texas
United States Donald Guthrie Foundation for Education and Research Sayre Pennsylvania
United States The Heart Institute at Virginia Mason Seattle Washington
United States Providence Hospital Southfield Michigan
United States Prairie Education and Research Cooperative Springfield Illinois
United States Tallahassee Research Institute Tallahassee Florida
United States University of South Florida, Cardiovascular Services Tampa Florida
United States Scott & White Memorial Hospital Temple Texas
United States Oklahoma Heart Institute at Utica Tulsa Oklahoma
United States Wake Forest University Medical Center Clinical Sciences Winston-Salem North Carolina
United States York Hospital York Pennsylvania
United States St. Elizabeth Health Center Youngstown Ohio

Sponsors (1)

Lead Sponsor Collaborator
Abbott Medical Devices

Countries where clinical trial is conducted

United States,  Australia,  Belgium,  Finland,  Netherlands, 

Outcome

Type Measure Description Time frame Safety issue
Primary Freedom From Right Atrial (RA) Lead-related Complications in the Acute Period Percentage of patients who do not have RA lead-related complications from implant through the 2 month study visit Implant through 2 months
Primary Freedom From Right Ventricular (RV) Lead-related Complications in the Acute Time Period Percentage of patients who do not have RV lead-related complications from implant through the 2 month study visit Implant through 2 months
Primary Freedom From RA Related Complications in the Chronic Period Percentage of patients who do not have RA lead-related complications from the 2 month through the 12 month study visit 2 months through 12 months
Primary Freedom From Right Ventricular Lead Related Complications in the Chronic Period Percentage of patients who do not have RV lead-related complications from the 2 month through the 12 month study visit 2 months through 12 months
Primary Freedom From MRI Scan-related Complications Percentage of patients who do not have MRI-related complications from the MRI scan visit to the 1 month post MRI scan visit MRI Scan visit through 1 month after MRI scan visit
Primary Change in Atrial Capture Threshold From Pre to Post MRI Scan Percentage of patients with an increase in RA capture thresholds of <= 0.5 V, at a pulse width of 0.5 ms . MRI Scan visit to 1 month after MRI scan visit
Primary Change in Ventricular Capture Threshold Pre to Post MRI Scan Percentage of patients with an increase in RV capture thresholds of <=0.5V, at a pulse width of 0.5 ms. MRI Scan visit to 1 month after MRI scan visit
Primary Change in Atrial Sense Amplitude Percentage of patients with a reduction in RA sense amplitude <=50 % and sense amplitude >=1.5 mV. MRI Scan visit to 1 month after MRI scan visit
Primary Change in Ventricular Sense Amplitude Percentage of patients with an reduction in RV sense amplitude <=50% and sense amplitude >=5 mV. MRI Scan visit to 1 month after the MRI Scan visit
Secondary Freedom From System-related Complications Percentage of patients who do not have system-related complications from implant through the 12 month study visit Implant through 12 months
Secondary Atrial Capture Threshold at the MRI Visit Percentage of patients with RA capture threshold =2.0 volts (V) at the MRI visit MRI Scan visit (approx 3 months post implant)
Secondary Ventricular Capture Threshold at the MRI Visit Percentage of patients with RV capture threshold =2.0 V at the MRI visit MRI Scan visit (approx 3 months post implant)