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Syncopal Attacks Arising from Erratic Demand Pacemaker Function in the Vicinity of a Television Transmitter

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George F. D'Cunha, Thomas Nicoud, Albert H. Pemberton, Francis E. Rosser, James T. Botticelli · 1973

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Television transmitter interference caused pacemaker malfunctions and fainting, requiring titanium shielding to restore normal function.

Plain English Summary

Summary written for general audiences

A patient with a Medtronic 5842 pacemaker experienced repeated fainting episodes caused by radio frequency interference from a nearby television transmitter. The interference disrupted the pacemaker's normal function, but switching to a titanium-shielded model solved the problem.

Why This Matters

This 1973 case study provides compelling real-world evidence that RF radiation can interfere with critical medical devices. While modern pacemakers have improved shielding, the fundamental physics remains unchanged - electromagnetic fields can disrupt sensitive electronic circuits. What makes this particularly relevant today is that we're now surrounded by exponentially more RF sources than existed in 1973. Television transmitters operate at much higher power levels than most consumer devices, but the proliferation of cell towers, WiFi networks, and wireless devices means pacemaker patients face more varied interference risks. The reality is that electromagnetic compatibility testing for medical devices often doesn't account for the complex, multi-frequency environment we live in today.

Exposure Information

Specific exposure levels were not quantified in this study.

Cite This Study
George F. D'Cunha, Thomas Nicoud, Albert H. Pemberton, Francis E. Rosser, James T. Botticelli (1973). Syncopal Attacks Arising from Erratic Demand Pacemaker Function in the Vicinity of a Television Transmitter.
Show BibTeX
@article{syncopal_attacks_arising_from_erratic_demand_pacemaker_function_in_the_vicinity__g5217,
  author = {George F. D'Cunha and Thomas Nicoud and Albert H. Pemberton and Francis E. Rosser and James T. Botticelli},
  title = {Syncopal Attacks Arising from Erratic Demand Pacemaker Function in the Vicinity of a Television Transmitter},
  year = {1973},
  
  
}

Quick Questions About This Study

Yes, this study documented a patient whose Medtronic 5842 pacemaker malfunctioned near a TV transmitter, causing repeated fainting episodes. The radio frequency interference inhibited normal pacemaker operation until a shielded model was implanted.
The Medtronic 5842 pacemaker was susceptible to interference from television transmitters. The study specifically warned that patients with this model should avoid areas near TV transmitters due to potential malfunction risks.
Doctors replaced the original Medtronic 5842 with a titanium-shielded Medtronic 5942 pacemaker. The titanium shielding effectively blocked the radio frequency interference, preventing further episodes of pacemaker inhibition and fainting.
The patient experienced syncopal attacks (fainting episodes) caused by pacemaker inhibition. These episodes happened repeatedly when the patient was in the vicinity of the television transmitter's radio frequency field.
The researchers specifically recommended warning patients with Medtronic 5842 pacemakers about potential hazards near television transmitters. While newer pacemakers have better shielding, patients should discuss interference risks with their doctors.