Thoracic versus nonthoracic MR imaging for patients with an MR nonconditional cardiac implantable electronic device
AuthorNyotowidjojo, Iwan S.
Shah, Aakash S.
Indik, Julia H.
AffiliationUniv Arizona, Coll Med, Sarver Heart Ctr
Univ Arizona, Coll Med, Dept Med Imaging
MetadataShow full item record
CitationNyotowidjojo IS, Skinner K, Shah AS, et al. Thoracic versus nonthoracic MR imaging for patients with an MR nonconditional cardiac implantable electronic device. Pacing Clin Electrophysiol. 2018;41:589–596. https://doi.org/ 10.1111/pace.13340
Rights© 2018 Wiley Periodicals, Inc.
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AbstractBackgroundObservational studies have explored the safety of magnetic resonance (MR) scanning of patients with cardiac implantable electronic devices (CIEDs) that are not Food and Drug Administration approved for MR scanning (nonconditional). However, concern has been raised that MR scanning that includes the thoracic region may pose a higher risk. This study examines the safety of MR scanning of thoracic versus nonthoracic regions of patients with CIEDs. MethodsPatients underwent MR scanning utilizing an institutional protocol. CIED variables examined included sensing value, pacing capture threshold, lead impedance, and battery voltage. Regression analysis of the CIED variable differences (pre- to immediately post-MR and pre-MR to long-term follow-up) was performed to determine if CIED variable differences were dependent on region scanned (thoracic vs nonthoracic), time from CIED implant to MR scanning, or CIED type (pacemaker vs implantable cardioverter defibrillator). Results238 patients (38% female, age 65 15 years) underwent 339 MR scans, including 99 MR scans of the thoracic region. CIED variable differences to immediately post-MR or to long-term follow-up were not significantly different from zero (P>0.05) and there was no dependence upon region scanned (thoracic vs nonthoracic), time from CIED implant to MR scan, or CIED type. One power-on reset occurred in a patient that underwent a cardiac MR and the CIED was successfully reprogrammed. There were no clinical adverse effects. ConclusionsCIED variable differences following MR scan were not dependent on the region scanned (thoracic vs nonthoracic) and there were no clinical adverse effects in this prospective cohort.
Note12 month embargo; published online: 30 April 2018
VersionFinal accepted manuscript
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