ProMRI AFFIRM Study of the EVIA/ENTOVIS Pacemaker With Safio S Pacemaker Leads

Inclusion Criteria: * Pacemaker system consisting solely of the EVIA/ENTOVIS pacemaker and Safio S pacemaker leads * The pacemaker system has to be implanted, repositioned or exchanged at least 5 weeks prior to enrollment * Age more than 18 years * Understand the nature of the procedure * Able and willing to complete MRI testing * Able and willing to activate and use the Cardio Messenger * Give written informed consent * Able to complete all testing required by the clinical protocol * Ability to measure atrial and/or ventricular pacing threshold(s)\* (at 0.4 ms) * All pacing thresholds do not exceed 2.0V @0.4ms. * Available for follow-up visit at the investigational site * Patient body height greater or equal to 140 cm * Pectoral implantation * The ascertained lead impedance is between 200 and 1500 Ohms. Exclusion Criteria: * No EVIA/ENTOVIS /Safio S pacemaker system implanted * Pacing threshold(s) (at 0.4 ms) and sensing amplitudes are not measurable * Meet one or more of the contraindications * Being pregnant * Have a life expectancy of less than three months * Cardiac surgery already scheduled in the next three months * Enrolled in another cardiac clinical investigation * Have other medical implants that may interact with MRI, e.g. abandoned pacemaker/ICD leads, lead extensions, other active medical devices, non-MRI compatible devices (e.g. mechanical tricuspid valve) * Have other metallic artifacts/components in body that may interact with MRI