High-frequency electromagnetic radiation injury to the upper extremity: local and systemic effects.

Annals of plastic surgery · 1981 · Harm · Very low evidence

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HarmVery low evidencePaper 6014

Study snapshot

PublicationAnnals of plastic surgery · 1981

Study typecase_report

Reported directionHarm

Evidence ratingVery low

Abstract

Industrial use of radiofrequency and microwave energy sources (nonionizing, high-frequency electromagnetic radiation) is a growing and widespread phenomenon, with projected risks of exposure to more than 20 million workers in the United States. A description of the nature of this form of electromagnetic energy is given, with emphasis on the variability of energy absorption by humans. The current state of biological research is reviewed, and a summary of the known effects of radiofrequency and microwave radiation exposure on animals and humans provided. These known effects appear to be principally thermal, similar to conventional electrical burn injuries, but with some unique systemic expression. Derangements of cardiovascular, gastrointestinal, endocrine, hematological, ophthalmological, and behavioral functions are well described in animal experimentation. Two patients are presented--one a young woman exposed to a high-density radiofrequency field in an industrial setting, leading to necrosis of the entire hand and wrist as well as to a constellation of systemic effects, and one an older woman exposed to excessive microwave radiation from a malfunctioning microwave oven, leading to chronic hand pain and paresthesias resembling median nerve entrapment at the carpus. The prevalence of potential exposure in certain industries is noted and recommendations for follow-up care of workers exposed to this form of trauma are delineated.

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 typecase_report

Effect directionharm

PopulationNot supplied

Sample size2

ExposureRF

Evidence strengthVery lowConfidence: 78% · Peer reviewed: yes

Main findings

Two cases of high-frequency electromagnetic radiation exposure are presented: one industrial high-density radiofrequency field exposure associated with necrosis of the entire hand and wrist and systemic effects, and one excessive microwave exposure from a malfunctioning microwave oven associated with chronic hand pain and paresthesias resembling median nerve entrapment. The paper notes that known effects are principally thermal but may have unique systemic expression, with multiple systemic derangements described in animal experimentation.

Outcomes measured

Upper extremity injury (hand/wrist necrosis)
Chronic hand pain
Paresthesias resembling median nerve entrapment
Systemic effects (cardiovascular, gastrointestinal, endocrine, hematological, ophthalmological, behavioral derangements mentioned)

Limitations

Case report design; cannot establish causality or estimate risk
Exposure metrics (frequency, intensity, duration, SAR) not reported in abstract
Small sample size (two patients)
Systemic effects described as a constellation without detailed quantification in abstract

View raw extracted JSON

{
  "study_type": "case_report",
  "exposure": {
    "band": "RF",
    "source": "occupational",
    "frequency_mhz": null,
    "sar_wkg": null,
    "duration": null
  },
  "population": null,
  "sample_size": 2,
  "outcomes": [
    "Upper extremity injury (hand/wrist necrosis)",
    "Chronic hand pain",
    "Paresthesias resembling median nerve entrapment",
    "Systemic effects (cardiovascular, gastrointestinal, endocrine, hematological, ophthalmological, behavioral derangements mentioned)"
  ],
  "main_findings": "Two cases of high-frequency electromagnetic radiation exposure are presented: one industrial high-density radiofrequency field exposure associated with necrosis of the entire hand and wrist and systemic effects, and one excessive microwave exposure from a malfunctioning microwave oven associated with chronic hand pain and paresthesias resembling median nerve entrapment. The paper notes that known effects are principally thermal but may have unique systemic expression, with multiple systemic derangements described in animal experimentation.",
  "effect_direction": "harm",
  "limitations": [
    "Case report design; cannot establish causality or estimate risk",
    "Exposure metrics (frequency, intensity, duration, SAR) not reported in abstract",
    "Small sample size (two patients)",
    "Systemic effects described as a constellation without detailed quantification in abstract"
  ],
  "evidence_strength": "very_low",
  "confidence": 0.78,
  "peer_reviewed_likely": "yes",
  "keywords": [
    "radiofrequency",
    "microwave",
    "nonionizing radiation",
    "occupational exposure",
    "industrial exposure",
    "microwave oven",
    "thermal injury",
    "burns",
    "hand necrosis",
    "paresthesias",
    "systemic effects"
  ],
  "suggested_hubs": [
    {
      "slug": "occupational-exposure",
      "weight": 0.9,
      "reason": "Describes industrial RF exposure and discusses worker exposure and follow-up care."
    }
  ]
}

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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: 10.1097/00000637-198108000-00009
PubMed: 7294659

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