M.O. is a recipient of the 2011 Golseth Award from the AANEM.
Electromyography tests in patients with implanted cardiac devices are safe regardless of magnet placement
Article first published online: 5 OCT 2012
Copyright © 2012 Wiley Periodicals, Inc.
Muscle & Nerve
Volume 47, Issue 1, pages 17–22, January 2013
How to Cite
Ohira, M., Silcox, J., Haygood, D., Harper-King, V., Alsharabati, M., Lu, L., Morgan, M. B., Young, A. M., Claussen, G. C., King, P. H. and Oh, S. J. (2013), Electromyography tests in patients with implanted cardiac devices are safe regardless of magnet placement. Muscle Nerve, 47: 17–22. doi: 10.1002/mus.23479
- Issue published online: 15 DEC 2012
- Article first published online: 5 OCT 2012
- Accepted manuscript online: 4 JUN 2012 12:00AM EST
- Manuscript Accepted: 29 MAY 2012
- cardiac defibrillator;
- cardiac pacemaker;
- implanted cardiac devices;
- magnet placement;
- safety of EMG test
We compared the problems or complications associated with electrodiagnostic testing in 77 patients with implanted cardiac devices. Thirty tests were performed after magnet placement, and 47 were performed without magnet application.
All electrodiagnostic tests were performed safely in all patients without any serious effect on the implanted cardiac devices with or without magnet placement. A significantly higher number of patient symptoms and procedure changes were reported in the magnet group (P < 0.013). No statistical difference was found in the testing difficulty or ECG changes.
The magnet group patients had an approximately 11-fold greater risk of symptoms than those in the control group. Our data do not support a recommendation that magnet placement is necessary for routine electrodiagnostic testing in patients with implanted cardiac devices, as long as our general and specific guidelines are followed. Muscle Nerve, 2013