Synopsis of JBS recommendations for magnetic resonance imaging in patients with cardiac implantable electronic devices

Written consent is not required with MR conditional CIEDs. Prior to scan acquisition, the device is programmed to MR Mode which uses OVO/ODO or VOO/DOO pacing depending on the presence or absence of a stable underlying rhythm, respectively. This reduces the risks associated with over-sensing electromagnetic interference leading to asystole or inappropriate tracking of electromagnetic interference leading to unwarranted pacing at the upper track rate and/or the risk of malignant arrhythmia due to € R-on-T'. Antitachycardia therapies are turned off in defibrillators to prevent inappropriate therapy attempts and voltage depletion. Required monitoring modalities, qualified personnel and resuscitation equipment are listed in table 1. In most cases, scanning in Normal Operating Mode is recommended with standard specific absorption rates (SARs). All MR conditional devices allow using 1.5 T scans and most allow 3 T, but checking MR conditional parameters set by the manufacturers is recommended. Metal artefact reduction techniques may be used for thoracic imaging. If malignant arrhythmias are detected, scanning should be halted promptly, advanced cardiac life support delivered and the device reprogrammed to deliver appropriate therapies. After the scan, full device interrogation should be performed and MR Mode disabled, reverting the CIED to its original settings. Any significant change in device parameters should be communicated to the patient and cardiologist. © Author(s) (or their employer(s)) 2023. No commercial re-use. See rights and permissions. Published by BMJ.