INTERFERENCE HAZARDS WITH AUSTRALIAN NON-COMPETITIVE ("DEMAND") PACEMAKERS

Plain English Summary

Summary written for general audiences

Researchers tested how various electrical devices affected three implanted pacemakers in 1971. Only direct contact with physiotherapy diathermy equipment caused interference, speeding up the pacemaker rate to 136 beats per minute. Common household appliances and microwave ovens showed no interference effects.

Why This Matters

This early pacemaker study reveals something important about EMF interference that often gets overlooked in today's discussions. The researchers found that only direct contact with high-powered medical diathermy equipment caused problems - household appliances, even at very close range, had zero effect. What's particularly telling is their conclusion that 'medical and lay publicity has possibly led to the overstressing of interference hazards.' This was 1971, yet we see the same pattern today where theoretical EMF risks often get amplified beyond what the actual science supports. The reality is that modern pacemakers have even better shielding than these 1971 models, yet EMF anxiety around medical devices persists. This study demonstrates the importance of distinguishing between high-powered medical equipment and everyday EMF sources when assessing real-world interference risks.

Exposure Information

Specific exposure levels were not quantified in this study.

Cite This Study

STEPHEN N. HUNYOR, ROWAN NICKS, DAVID JONES, DAVID COLES, JANETTE HEATH (1971). INTERFERENCE HAZARDS WITH AUSTRALIAN NON-COMPETITIVE ("DEMAND") PACEMAKERS.

Show BibTeX

@article{interference_hazards_with_australian_non_competitive_demand_pacemakers_g3597,
  author = {STEPHEN N. HUNYOR and ROWAN NICKS and DAVID JONES and DAVID COLES and JANETTE HEATH},
  title = {INTERFERENCE HAZARDS WITH AUSTRALIAN NON-COMPETITIVE ("DEMAND") PACEMAKERS},
  year = {1971},
  
  
}

Quick Questions About This Study

No, domestic electrical appliances had no effect on the three Teletronics P6 pacemakers tested, even when placed at very close range to the pacemaker units or their leads.

Only physiotherapy shortwave diathermy equipment caused interference when the pads were applied directly to the patient's knee, increasing the pacemaker rate to 136 beats per minute.

No, microwave ovens had no effect on the three implanted Teletronics P6 pacemakers tested in this 1971 study, even at close proximity.

The pacemaker rate increased to 136 beats per minute when exposed to direct contact with physiotherapy diathermy pads, but stayed within the device's maximum specified rate.

The researchers concluded that medical and lay publicity had 'possibly led to the overstressing of interference hazards' based on their minimal interference findings.