TITLE

Safety of Electromagnetic Articulography in Patients With Pacemakers and Implantable Cardioverter-Defibrillators

AUTHOR(S)
Joglar, Jose A.; Nguyen, Carol; Garst, Diane M.; Katz, William F.
PUB. DATE
August 2009
SOURCE
Journal of Speech, Language & Hearing Research;Aug2009, Vol. 52 Issue 4, p1082
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
Purpose: Electromagnetic articulography (EMA) uses a helmet to create alternating magnetic fields for tracking speech articulator movement. An important safety consideration is whether EMA magnetic fields interfere with the operation of speakers' pacemakers or implantable cardioverter-defibrillators (ICDs). In this investigation, individuals with pacemaker/ICD devices were exposed to EMA fields under controlled conditions while potential interference was examined. Method: Twelve adults with pacemaker/ICD devices from 3 major manufacturers were assessed for device function before, during, and after exposure to magnetic fields from a Carstens AG100 EMA system. Potential interference was probed, with EMA transmitters positioned at varying distances from the implantable devices and with the EMA system set at different operating strengths. Results:No adverse affects in device operation were observed under any conditions. The only potential complication was temporary telemetry-link interference during device testing in some cases. Conclusion: The results suggest that EMA technology maybe safely used with patients who have pacemakers and ICDs. However, the present findings do not rule out potential interference with other pacemaker/ICD manufacturers or with different articulography systems. Precautions are suggested for testing individuals with pacemaker/ICDs under EMA conditions.
ACCESSION #
43421302

 

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