J Korean Soc Emerg Med.  2016 Jun;27(3):231-237. 10.0000/jksem.2016.27.3.231.

Effect of Electromagnetic Interference on Automated External Defibrillator: Simulation Study with Literature Review

• Ku JE
• You JS
• Joo YS
• Kong T
• Ko DR
• Chung SP

• KMID: 2320786
• DOI: http://doi.org/10.0000/jksem.2016.27.3.231

Abstract

PURPOSE
Automated external defibrillators (AEDs) could not recommend shock for ventricular fibrillation in the presence of electromagnetic interference. The purpose of this study was to examine the effect of an induced electromagnetic field on performance of AED.
METHODS
The intensity of magnetic waves from commercial electric mats was measured. Three AEDs were attached to the resuscitation manikin and the question of whether shock would be recommended for simulated electrocardiogram of VF or normal sinus rhythm was tested. The simulation was repeated 10 times under the influence of 0, 5, and 18 µT magnetic field or electric mat. Relevant literature studies on electromagnetic interference on AED were reviewed.
RESULTS
The magnetic flux density from the electric mat was measured to 5.67-6.1 µT in warming phase, and 2.25-2.84 µT in maintenance phase. There was no false positive or false negative recommendation of shock under the influence of 0, 5, and 18 µT magnetic field or electric mat. However, one AED detected motion even in the stationary state. Among 11 studies from the literature search, five studies reported misinterpretation of AED. Minor errors including delayed analysis, motion artefact, and noise in speakers were reported from 6 studies.
CONCLUSION
Although we could not reproduce false negative interpretation, AED made a mistake in confusing electromagnetic interference with motion artefact. Therefore, emergency providers should be cautious not to use AED close to household appliances or medical equipment inducing electromagnetic interference.

Keyword

Defibrillators; Electromagnetic fields; Review

MeSH Terms

Artifacts
Defibrillators*
Electrocardiography
Electromagnetic Fields
Emergencies
Family Characteristics
Magnetic Fields
Magnets*
Manikins
Noise
Resuscitation
Shock
Ventricular Fibrillation