Automated external defibrillators appropriately recognize ventricular fibrillation in electromagnetic fields.

Prehospital emergency care · 2002 · No effect · Low evidence

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No effectLow evidencePaper 5312

Study snapshot

PublicationPrehospital emergency care · 2002

Study typeother

Reported directionNo effect

Evidence ratingLow

Abstract

OBJECTIVES: Automated external defibrillators (AEDs) are increasingly available in industrial settings, but many industries have high electromagnetic fields (EMFs), which can interfere with the function of electronic devices. This study evaluated the performance of several AEDs when exposed to high EMFs. METHODS: Three commercially available AEDs were evaluated in the setting of a public utility coal-fired electrical generation plant. Each AED was placed in three areas of high EMF ranging from 310 to 1,600 milligauss. A signal generator, used to simulate various cardiac rhythms, was connected to the AEDs. Rhythms simulated were ventricular fibrillation, asystole, and normal sinus rhythm. Each of the AED's interpretations of various rhythms were evaluated in the different EMF settings. RESULTS: Rhythms of ventricular fibrillation, asystole, and normal sinus rhythm were correctly recognized by each AED in each of the three areas of high EMF. Each AED appropriately recommended defibrillation when presented with ventricular fibrillation. No misinterpretations or inappropriate defibrillations were observed. CONCLUSION: Electromagnetic fields generated by an electrical power plant did not interfere with three commercial AEDs' abilities to correctly interpret simulated rhythms and recommend appropriate defibrillation.

Machine Enhanced Logic

AI evidence extraction

Structured fields below were generated from the paper’s abstract and metadata to make the evidence easier to inspect. Automated extraction may be incomplete or incorrect; verify important details against the original paper.

Study typeother

Effect directionno_effect

PopulationNot supplied

Sample size3

ExposureNot supplied

Evidence strengthLowConfidence: 74% · Peer reviewed: yes

Main findings

In a coal-fired electrical generation plant with electromagnetic fields reported as 310–1,600 milligauss, three commercially available AEDs correctly recognized simulated ventricular fibrillation, asystole, and normal sinus rhythm in three high-EMF areas. All AEDs appropriately recommended defibrillation for ventricular fibrillation, and no misinterpretations or inappropriate defibrillations were observed.

Outcomes measured

AED rhythm recognition/interpretation accuracy (ventricular fibrillation, asystole, normal sinus rhythm)
Appropriate defibrillation recommendation
Misinterpretations/inappropriate defibrillations under high EMF exposure

Limitations

Only three AED models/devices were tested
Cardiac rhythms were simulated using a signal generator rather than real patients
Exposure characterized only as 310–1,600 milligauss in three plant areas; frequency characteristics not reported
Single setting (one coal-fired electrical generation plant)

View raw extracted JSON

{
  "study_type": "other",
  "exposure": {
    "band": null,
    "source": "occupational",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": null
  },
  "population": null,
  "sample_size": 3,
  "outcomes": [
    "AED rhythm recognition/interpretation accuracy (ventricular fibrillation, asystole, normal sinus rhythm)",
    "Appropriate defibrillation recommendation",
    "Misinterpretations/inappropriate defibrillations under high EMF exposure"
  ],
  "main_findings": "In a coal-fired electrical generation plant with electromagnetic fields reported as 310–1,600 milligauss, three commercially available AEDs correctly recognized simulated ventricular fibrillation, asystole, and normal sinus rhythm in three high-EMF areas. All AEDs appropriately recommended defibrillation for ventricular fibrillation, and no misinterpretations or inappropriate defibrillations were observed.",
  "effect_direction": "no_effect",
  "limitations": [
    "Only three AED models/devices were tested",
    "Cardiac rhythms were simulated using a signal generator rather than real patients",
    "Exposure characterized only as 310–1,600 milligauss in three plant areas; frequency characteristics not reported",
    "Single setting (one coal-fired electrical generation plant)"
  ],
  "evidence_strength": "low",
  "confidence": 0.74,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "automated external defibrillator",
    "AED",
    "electromagnetic fields",
    "industrial setting",
    "power plant",
    "milligauss",
    "device interference",
    "ventricular fibrillation",
    "asystole",
    "normal sinus rhythm"
  ],
  "suggested_hubs": [
    {
      "slug": "occupational-exposure",
      "weight": 0.78,
      "reason": "Study evaluates device performance in a workplace (electrical generation plant) with high electromagnetic fields."
    }
  ]
}

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AI-extracted fields are generated from the abstract and metadata and may be incomplete or incorrect. This material is for informational purposes and is not medical advice.

Identifiers and source

DOI: 10.1080/10903120290938814
PubMed: 11789654

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