Radiofrequency electrocution (196 MHz)

Area of Science:

• Medical Physics
• Occupational Health
• Neurology

Background:

• Radiofrequency (RF) electrocutions are rare, with limited data on high-frequency exposures.
• Previous reports predominantly focus on lower frequencies (e.g., 50 Hz).
• Understanding the effects of high-frequency RF current is crucial for safety standard development.

Purpose of the Study:

• To report a case of electrocution at 196 MHz, a previously undocumented frequency.
• To analyze the clinical presentation and biophysical aspects of high-frequency RF electrocution.
• To inform safety standard setting for RF exposure.

Main Methods:

• Case report of a 53-year-old technician exposed to 2A current at 196 MHz.
• Clinical evaluation including neurological assessment and sensory testing.
• Biophysical analysis of potential current flow and affected tissues.

Main Results:

• The patient experienced no immediate shock or burn but developed delayed joint pain, altered sensation, and paresthesiae.
• Neurological examination revealed no frank abnormalities, but objective changes in temperature perception were noted.
• Symptoms showed partial improvement with ultrasound therapy and specific medications, but some persisted.

Conclusions:

• Electrocution at 196 MHz, even without burns, can lead to significant long-term morbidity.
• The mechanism likely involves superficial current flow affecting micro-vasculature.
• Physicians and safety standard committees must be aware of these risks.