Background: Many patients with cardiac implantable electronic devices (CIED) undergo magnetic resonance imaging (MRI); however, a relevant proportion have a CIED system that has not been classified as MRI-conditional because of generators and leads from different brands (mixed-brand group). The available data concerning the outcome of these mixed patients undergoing MRI is limited.
Methods: A retrospective single center study, including all patients with CIEDs undergoing MRI between January 2013 until May 2020, was performed.