|
| HOME | SUBSCRIPTIONS | CURRENT ISSUE | PAST ISSUES | CARDIOSOURCE | SEARCH | HELP | FEEDBACK |
|
|
|
|||||||||
|
|||||||||||
|
J Am Coll Cardiol, 1987; 10:782-786 © 1987 by the American College of Cardiology Foundation |
Division of Cardiovascular Diseases and Internal Medicine, Mayo Clinic, Rochester, Minnesota 55905.
Patients with a permanent pacemaker are currently restricted from diagnostic nuclear magnetic resonance (NMR) imaging because of potential adverse effects on the pacemaker by the magnet. Previous work has shown that NMR imaging will result in asynchronous pacing of the pulse generator within a given distance of the magnet. The radiofrequency signal generated by the system may also result in rapid cardiac pacing, which may have deleterious effects. This study utilized a 1.5 tesla unit in an in vivo laboratory animal to evaluate the unit's effects on eight different pulse generators from two manufacturers. All pacemakers functioned in an asynchronous mode when placed within a certain distance of the magnet. In addition, transient reed switch inhibition was observed. Seven of the eight pulse generators paced rapidly when exposed to the radiofrequency signal and there was a dramatic decrease in arterial blood pressure. Whether effective rapid cardiac pacing would occur could not be predicted before exposure to the magnetic resonance unit. Nuclear magnetic resonance imaging with high magnetic fields in patients with a pacemaker should continue to be avoided until the mechanism of the rapid cardiac pacing can be further delineated and either predicted or prevented.
This article has been cited by other articles:
|
|
 |
|
  A. Roguin, J. Schwitter, C. Vahlhaus, M. Lombardi, J. Brugada, P. Vardas, A. Auricchio, S. Priori, and T. Sommer Magnetic resonance imaging in individuals with cardiovascular implantable electronic devices Europace, March 1, 2008; 10(3): 336 - 346. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 G. N. Levine, A. S. Gomes, A. E. Arai, D. A. Bluemke, S. D. Flamm, E. Kanal, W. J. Manning, E. T. Martin, J. M. Smith, N. Wilke, et al. Safety of Magnetic Resonance Imaging in Patients With Cardiovascular Devices: An American Heart Association Scientific Statement From the Committee on Diagnostic and Interventional Cardiac Catheterization, Council on Clinical Cardiology, and the Council on Cardiovascular Radiology and Intervention: Endorsed by the American College of Cardiology Foundation, the North American Society for Cardiac Imaging, and the Society for Cardiovascular Magnetic Resonance Circulation, December 11, 2007; 116(24): 2878 - 2891. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
S. Nazarian, A. Roguin, M. M. Zviman, A. C. Lardo, T. L. Dickfeld, H. Calkins, R. G. Weiss, R. D. Berger, D. A. Bluemke, and H. R. Halperin Clinical Utility and Safety of a Protocol for Noncardiac and Cardiac Magnetic Resonance Imaging of Patients With Permanent Pacemakers and Implantable-Cardioverter Defibrillators at 1.5 Tesla Circulation, September 19, 2006; 114(12): 1277 - 1284. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 R. Luechinger, V. A. Zeijlemaker, E. M. Pedersen, P. Mortensen, E. Falk, F. Duru, R. Candinas, and P. Boesiger In vivo heating of pacemaker leads during magnetic resonance imaging Eur. Heart J., February 2, 2005; 26(4): 376 - 383. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 S K Prasad and D J Pennell Safety of cardiovascular magnetic resonance in patients with cardiovascular implants and devices Heart, November 1, 2004; 90(11): 1241 - 1244. [Full Text] [PDF]
|
|
|
|
 |
|
 F. G. Shellock and J. V. Crues MR Procedures: Biologic Effects, Safety, and Patient Care Radiology, September 1, 2004; 232(3): 635 - 652. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 J. Loewy, A. Loewy, and E. J. Kendall Reconsideration of Pacemakers and MR Imaging RadioGraphics, September 1, 2004; 24(5): 1257 - 1267. [Abstract] [Full Text] [PDF]
|
|
|
|
|
|
R. M. Steiner and J. Loewy Invited Commentary * Author's Response RadioGraphics, September 1, 2004; 24(5): 1267 - 1268. [Full Text] [PDF]
|
|
|
|
 |
|
 T. V. Salukhe, D. Dob, and R. Sutton Pacemakers and defibrillators: anaesthetic implications Br. J. Anaesth., July 1, 2004; 93(1): 95 - 104. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 E. T. Martin, J. A. Coman, F. G. Shellock, C. C. Pulling, R. Fair, and K. Jenkins Magnetic resonance imaging and cardiac pacemaker safety at 1.5-Tesla J. Am. Coll. Cardiol., April 7, 2004; 43(7): 1315 - 1324. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 D. A. Finelli, A. R. Rezai, P. M. Ruggieri, J. A. Tkach, J. A. Nyenhuis, G. Hrdlicka, A. Sharan, J. Gonzalez-Martinez, P. H. Stypulkowski, and F. G. Shellock MR Imaging-Related Heating of Deep Brain Stimulation Electrodes: In Vitro Study AJNR Am. J. Neuroradiol., November 1, 2002; 23(10): 1795 - 1802. [Abstract] [Full Text] [PDF]
|
|
|
|
 |
|
 C. D. Collard and S. C. Body Anesthetic Implications for Patients With Permanent Pacemakers Seminars in Cardiothoracic and Vascular Anesthesia, September 1, 2000; 4(3): 144 - 151. [Abstract] [PDF]
|
|
|
|
|
|
T. Sommer, C. Vahlhaus, G. Lauck, A. v. Smekal, M. Reinke, U. Hofer, W. Block, F. Träber, C. Schneider, J. Gieseke, et al. MR Imaging and Cardiac Pacemakers: In Vitro Evaluation and in Vivo Studies in 51 Patients at 0.5 T Radiology, June 1, 2000; 215(3): 869 - 879. [Abstract] [Full Text]
|
|
|
|
|
|
L. M. Boxt From the RSNA Refresher Courses: Cardiac MR Imaging: A Guide for the Beginner RadioGraphics, July 1, 1999; 19(4): 1009 - 1025. [Abstract] [Full Text] [PDF]
|
|
| HOME | SUBSCRIPTIONS | CURRENT ISSUE | PAST ISSUES | CARDIOSOURCE | SEARCH | HELP | FEEDBACK |
