Korean J Intern Med.  2019 Jan;34(1):99-107. 10.3904/kjim.2017.251.

Experiences of magnetic resonance imaging scanning in patients with pacemakers or implantable cardioverter-defibrillators

Affiliations
  • 1Department of Internal Medicine, Seoul National University Bundang Hospital, Seongnam, Korea. ilyoung.oh@snubh.org

Abstract

BACKGROUND/AIMS
Despite the U.S. Food and Drug Adminstration approving a magnetic resonance imaging (MRI)-conditional pacemaker system in 2011, many physicians remain reluctant to perform MRI scanning in patients with cardiac implantable electronic devices. Herein, we aimed to evaluate the real-world safety of MRI in these patients.
METHODS
This single-center retrospective study examined the interrogation data and outcomes of patients with pacemakers or implantable cardioverter defibrillators who underwent MRI. MRI interrogation data were collected pre- and post-MRI and after 1 month of follow-up; these included the lead impedance, measured P- and R-wave amplitudes, and capture threshold. We compared these results between the magnetic resonance (MR)-conditional and conventional groups.
RESULTS
From September 2013 to December 2015, 35 patients with cardiac implantable electronic devices underwent 43 MRI scans, with a mean follow-up of 5 months. Among these 35 patients, 14 (40%) had MR-conditional devices and 21 (60%) had conventional devices. Seven patients had high voltage devices, which were all the conventional type. There were no adverse events associated with MRI during the follow-up period, and there were no significant differences in the interrogation data changes between the conventional and MR-conditional groups.
CONCLUSIONS
This single-center retrospective study found that MRI can be performed safely in patients with pacemakers or implantable cardioverter defibrillators, regardless of the MRI support, as long as appropriate precautions are taken.

Keyword

Pacemakers; Defibrillators, implantable; Magnetic resonance imaging; Interrogation data; Safety

MeSH Terms

Defibrillators, Implantable*
Electric Impedance
Follow-Up Studies
Humans
Magnetic Resonance Imaging*
Retrospective Studies
Full Text Links
  • KJIM
Actions
Cited
CITED
export Copy
Close
Share
  • Twitter
  • Facebook
Similar articles
Copyright © 2024 by Korean Association of Medical Journal Editors. All rights reserved.     E-mail: koreamed@kamje.or.kr