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J Korean Soc Emerg Med > Volume 27(3); 2016 > Article
Journal of The Korean Society of Emergency Medicine 2016;27(3): 231-237.
전자기장 간섭이 자동제세동기에 미치는 영향: 실험연구 및 문헌고찰
구재은1, 유제성2, 주영선2, 공태영2, 고동률2, 정성필2,*
1안양샘병원 응급의학과
2연세대학교 의과대학 응급의학교실
Effect of Electromagnetic Interference on Automated External Defibrillator: Simulation Study with Literature Review
Jae Eun Ku1, Je Sung You2, Young Seon Joo2, Taeyoung Kong2, Dong Ryul Ko2, Sung Phil Chung2,*
1Department of Emergency Medicine, Anyang Sam Hospital, Gyeonggido, Korea
2Department of Emergency Medicine, Yonsei University College of Medicine, Seoul, Korea
Correspondence  Sung Phil Chung ,Tel: 02) 2019-3030, Fax: 02) 2019-4820, Email: emstar@yuhs.ac,
Received: January 12, 2016; Revised: January 24, 2016   Accepted: April 6, 2016.  Published online: June 30, 2016.
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.
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.
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.
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.
Key words: Defibrillators, Electromagnetic fields, Review
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