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- Title
Rapid Ventricular Pacing in a Pacemaker Patient Undergoing Magnetic Resonance Imaging.
- Authors
Fontaine, John M.; Mohamed, Feroze B.; Gottlieb, Charles; Callans, David j.; Marchlinski, Francis E.
- Abstract
Magnetic resonance imaging (MRI) generates potent electromagnetic forces in the form of a static, gradient, or pulsed radiofrequency magnetic field that can result in pacemaker malfunction. This report documents a case of rapid cardiac pacing during MRI in a patient with a dual chamber pacemaker. Although the mechanism of rapid cardiac pacing is unclear, it was directly related to radiofrequency pulsing. We postulated that the lead acts as an antenna for radiofrequency energy that interacts with the pacemaker's output circuit, thus, causing cardiac pacing at a cycle length representing a multiple of the repetition time; or perhaps rapid pacing is related to induced currents generated between the MRI unit and the pacing lead.
- Subjects
MAGNETIC resonance imaging; DIAGNOSTIC imaging; CARDIAC pacemakers; CARDIAC pacing; MEDICAL equipment
- Publication
Pacing & Clinical Electrophysiology, 1998, Vol 21, Issue 6, p1336
- ISSN
0147-8389
- Publication type
Article
- DOI
10.1111/j.1540-8159.1998.tb00202.x