Accent Cardiac MRI Study

Abbott

Status

Completed

Conditions

Bradycardia

Treatments

Diagnostic Test: Non-Diagnostic Cardiac MRI scan

Study type

Interventional

Funder types

Industry

Identifiers

NCT02041702

CR-13-031-AP-LV

Details and patient eligibility

About

The aim of this study was to assess safety and efficacy of SJM MRI conditional pacing system. The study hypothesized that cardiac MRI scan would not affect performance of SJM MRI conditional pacing system.

Full description

Accent Cardiac MRI study was a prospective, randomized ,multi-center study conducted in Asia. Subjects indicated for dual-chamber pacemaker and who signed study consent form were considered enrolled and post implant were randomized to either Cardiac MRI Scan Group or Control Group.

Clinical evaluation and device interrogation were performed at baseline, pre- and post-MRI scan, and one month post-MRI for all subjects. At 9-12 weeks post-implant, patients in Cardiac MRI Scan Group underwent an elective non-diagnostic cardiac MRI scan at 1.5 Tesla (T) while patients in Control group underwent device interrogation and clinical evaluation twice with a 45-minute waiting period in between. The safety endpoint was freedom from MRI-related complications while efficacy endpoint was change in right atrial/ ventricular (RA/RV) capture threshold and sensing amplitude from pre-MRI scan to one month post-MRI scan.

Enrollment

283 patients

Sex

All

Ages

18+ years old

Volunteers

No Healthy Volunteers

Inclusion and exclusion criteria

Inclusion Criteria

Have an approved indication per American College of Cardiology(ACC)/ American Heart Association(AHA)/ Heart Rhythm Society(HRS)/ European Society of Cardiology(ESC) guidelines for implantation of a pacemaker
Will receive a new dual chamber pacemaker and leads
Be willing to undergo an elective MRI scan without complete sedation, that is ,under consciousness during MRI scan
Be able to provide informed consent for study participation
Be willing and able to comply with the prescribed follow-up tests and schedule of evaluations
Is not contraindicated for an MRI scan (per the pre-MRI safety screening form)
Age≥18 years
Subjects must be able to undergo pectoral implantation

Exclusion Criteria

Having an existing pacemaker or Implantable Cardioverter Defibrillator (ICD) .A new pacemaker and lead is required for enrollment
Permanent Atrial Fibrillation/Flutter
Are medically indicated for an MRI scan at the time of enrollment
Have an existing active implanted medical device, e.g. neurostimulator, infusion pump etc
Have a non-MRI compatible device or material implanted
Have a lead extender or adaptor
Be unable to fit in MRI bore; will come into contact with the magnet façade inside the MRI bore
Are currently participating in a clinical investigation that includes an active treatment arm
Are allergic to dexamethasone sodium phosphate(DSP)
Are pregnant or planning to become pregnant during the duration of the study
Have a life expectancy of less than 12 months due to any condition
Subjects with exclusion criteria required by local law (e.g. age)
Are unable to comply with the follow up schedule