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Clinical safety of ProMRI implantable cardioverter-defibrillator systems during head and lower lumbar magnetic resonance imaging at 1.5 Tesla

Magnetic resonance imaging (MRI) has long been contraindicated in patients with implanted pacemakers, defibrillators, and cardiac resynchronisation therapy (CRT) devices due to the risk of adverse effects through electromagnetic interference. Since many recipients of these devices will have a lifeti...

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Main Authors: Bauer, Wolfgang Rudolf (Author) , Lau, Dennis H. (Author) , Wollmann, Christian (Author) , McGavigan, Andrew (Author) , Mansourati, Jacques (Author) , Reiter, Theresa (Author) , Frömer, Simone (Author) , Ladd, Mark E. (Author) , Quick, Harald H. (Author)
Format: Article (Journal)
Language:English
Published: 03 December 2019
In: Scientific reports
Year: 2019, Volume: 9
ISSN:2045-2322
DOI:10.1038/s41598-019-54342-4
Online Access:Verlag, Volltext: https://doi.org/10.1038/s41598-019-54342-4
Verlag, Volltext: https://www.nature.com/articles/s41598-019-54342-4
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Author Notes:Wolfgang Rudolf Bauer, Dennis H. Lau, Christian Wollmann, Andrew McGavigan, Jacques Mansourati, Theresa Reiter, Simone Frömer, Mark E. Ladd & Harald H. Quick
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Summary:Magnetic resonance imaging (MRI) has long been contraindicated in patients with implanted pacemakers, defibrillators, and cardiac resynchronisation therapy (CRT) devices due to the risk of adverse effects through electromagnetic interference. Since many recipients of these devices will have a lifetime indication for an MRI scan, the implantable systems should be developed as ‘MRI-conditional’ (be safe for the MRI environment under predefined conditions). We evaluated the clinical safety of several Biotronik ProMRI (‘MRI-conditional’) defibrillator and CRT systems during head and lower lumbar MRI scans at 1.5 Tesla. The study enrolled 194 patients at 22 sites in Australia, Canada, and Europe. At ≥9 weeks after device implantation, predefined, non-diagnostic, specific absorption rate (SAR)-intensive head and lower lumbar MRI scans (total ≈30 minutes per patient) were performed in 146 patients that fulfilled pre-procedure criteria. Three primary endpoints were evaluated: freedom from serious adverse device effects (SADEs) related to MRI and defibrillator/CRT (leading to death, hospitalisation, life-threatening condition, or potentially requiring implanted system revision or replacement), pacing threshold increase, and sensing amplitude decrease, all at the 1-month post-MRI clinical visit. No MRI-related SADE occurred. Lead values remained stable, measured in clinic and monitored daily by the manufacturer home monitoring technology.
Item Description:Gesehen am 22.01.2020
Physical Description:Online Resource
ISSN:2045-2322
DOI:10.1038/s41598-019-54342-4

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