Cardiac MRI After Pacemaker Replacement

Exclusion Criteria

• •• Non MRI conditional leads implanted
• •* Pacing threshold(s) (at 0.4 or 0.5 ms) and/or sensing amplitude(s) and/or impedance(s) are not measurable
• •* Meet one or more of the contraindications for MRI including Psychiatric disorders, anxiety, claustrophobia Cardiac disorders that represent a contraindication to MRI
• •* Cardiac surgery already scheduled in the next three months
• •* Have other medical implants that may interact with MRI, e.g. abandoned implantable cardioverter defibrillator (ICD) leads or pacemaker leads other than MRI conditional, lead extensions, other active medical devices, non-MRI compatible devices, mechanical valve
• •* Have other metallic artifacts/components in body that may interact with MRI
• •* Subjects for whom a single dose of 1.0 milligram (mg) dexamethasone acetate may be contraindicated
• •* Subjects who require a legally authorized representative to obtain consent
• •* Subjects who are immediate candidates for an ICD
• •* Subjects with medical conditions that preclude the testing required by the protocol or limit study participation
• •* Subjects who are enrolled or intend to participate in another clinical trial (of an investigational drug or device, new indication for an approved drug or device, or requirement of additional testing beyond standard clinical practice) during this clinical study
• •* Being pregnant
• •* Have a life expectancy of less than three months